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Cell growth and accumulation of polyhydroxyalkanoates from CO2 and H2 of a hydrogen-oxidizing bacterium, Cupriavidus eutrophus B-10646 / T. G. Volova [et al.] // Bioresource Technology. - 2013. - Vol. 146. - P215-222, DOI 10.1016/j.biortech.2013.07.070 . - ISSN 0960-8524
Кл.слова (ненормированные):
Autotrophic synthesis -- Cupriavidus eutrophus -- Polyhydroxyalkanoates
Аннотация: Synthesis of polyhydroxyalkanoates (PHAs) by a new strain of Cupriavidus - Cupriavidus eutrophus B-10646 - was investigated under autotrophic growth conditions. Under chemostat, at the specific flow rate D=0.1h-1, on sole carbon substrate (CO2), with nitrogen, sulfur, phosphorus, potassium, and manganese used as growth limiting elements, the highest poly(3-hydroxybutyrate) [P(3HB)] yields were obtained under nitrogen deficiency. In batch autotrophic culture, in the fermenter with oxygen mass transfer coefficient 0.460h-1, P(3HB) yields reached 85% of dry cell weight (DCW) and DCW reached 50g/l. Concentrations of supplementary PHA precursor substrates (valerate, hexanoate, ?-butyrolactone) and culture conditions were varied to produce, for the first time under autotrophic growth conditions, PHA ter- and tetra-polymers with widely varying major fractions of 3-hydroxybutyrate, 4-hydroxybutyrate, 3-hydroxyvalerate, and 3-hydroxyhexanoate monomer units. Investigation of the high-purity PHA specimens showed significant differences in their physicochemical and physicomechanical properties. В© 2013 Elsevier Ltd.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
L.V. Kirenckii Institute of Physics of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Institute of Chemistry and Chemical Technology of Siberian Branch of Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Kiselev, E.G.; Shishatskaya, E.I.; Zhila, N.O.; Boyandin, A.N.; Syrvacheva, D.A.; Vinogradova, O.N.; Kalacheva, G.S.; Vasiliev, A.D.; Peterson, I.V.

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Microbial degradation of polyhydroxyalkanoates in tropical soils / A. N. Boyandin [et al.] // International Biodeterioration and Biodegradation. - 2013. - Vol. 83. - P77-84, DOI 10.1016/j.ibiod.2013.04.014 . - ISSN 0964-8305
Кл.слова (ненормированные):
Biopolymer properties -- Biopolymers -- PHA degrading microorganisms -- Polyhydroxyalkanoates (PHAs) -- Soil biodegradation -- 3-hydroxybutyric acid -- Degree of crystallinity -- Hydroxyalkanoic acids -- Microbial characteristics -- Microbial degradation -- Polyhydroxyalkanoates -- Polymer molecular mass -- Soil biodegradations -- Bacteriology -- Biomolecules -- Biopolymers -- Microorganisms -- Soils -- Tropics -- Biodegradation -- biodegradation -- chemical composition -- microbial activity -- microbial community -- molecular analysis -- organic compound -- polymer -- soil degradation -- soil microorganism -- tropical soil
Аннотация: The integrated study addressing biodegradation of microbial linear polyesters of hydroxyalkanoic acids (polyhydroxyalkanoates, PHAs) in tropical conditions by microbial communities of Vietnamese soils was performed in locations close to Hanoi and Nha Trang, which differed in their weather conditions and microbial communities. It shows that PHA degradation in tropical soils is influenced by polymer chemical composition, specimen shape, and microbial characteristics. The homopolymer of 3-hydroxybutyric acid is degraded at higher rates than the copolymer of 3-hydroxybutyric and 3-hydroxyvaleric acids. The average rates of mass loss were 0.04-0.33% per day for films and 0.02-0.18% for compact pellets. PHA degradation was accompanied by a decrease in the polymer molecular mass and, usually, an increase in the degree of crystallinity, suggesting preferential degradation of the amorphous phase. Under the study conditions, representatives of the bacterial genera Burkholderia, Bacillus, Cupriavidus, Mycobacterium, and Nocardiopsis and such micromycetes as Acremonium, Gongronella, Paecilomyces, and Penicillium, Trichoderma have been identified as major PHA degraders. В© 2013 Elsevier Ltd.

Scopus
Держатели документа:
Institute of Biophysics of Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russian Federation
The Joint Russian-Vietnam Tropical Research and Test Center, Hanoi, Viet Nam
Inst. of Chemical Biology and Fundamental Medicine, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Prudnikova, S.V.; Karpov, V.A.; Ivonin, V.N.; D?, N.L.; Nguy?n, T.H.; Le, T.M.H.; Filichev, N.L.; Levin, A.L.; Filipenko, M.L.; Volova, T.G.; Gitelson, I.I.

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Microparticles prepared from biodegradable polyhydroxyalkanoates as matrix for encapsulation of cytostatic drug / A. V. Murueva [et al.] // Journal of Materials Science: Materials in Medicine. - 2013. - Vol. 24, Is. 8. - P1905-1915, DOI 10.1007/s10856-013-4941-2 . - ISSN 0957-4530
Кл.слова (ненормированные):
3-hydroxybutyric acid -- Average diameter -- Cell attachments -- Chemical compositions -- Mass concentration -- Mouse-fibroblasts -- Polyhydroxyalkanoates -- Solvent evaporation techniques -- Biocompatibility -- Cell culture -- Cells -- Loading -- 3 hydroxybutyric acid -- 3 hydroxyhexanoic acid -- 4 hydroxybutyric acid -- 4',6 diamidino 2 phenylindole -- DNA -- doxorubicin -- nanoparticle -- polyhydroxyalkanoic acid -- polymer -- polystyrene -- solvent -- unclassified drug -- animal cell -- article -- biocompatibility -- biodegradability -- cell adhesion -- cell proliferation -- cell strain 3T3 -- cell viability -- chemical composition -- chemical structure -- controlled study -- cytotoxicity -- drug efficacy -- drug release -- electrophoretic mobility -- encapsulation -- evaporation -- fibroblast -- in vitro study -- nonhuman -- particle size -- priority journal -- stain -- study -- surface charge -- zeta potential
Аннотация: Microparticles made from degradable polyhydroxyalkanoates of different chemical compositions a homopolymer of 3-hydroxybutyric acid, copolymers of 3-hydroxybutyric and 4-hydroxybutyric acids (P3HB/4HB), 3-hydroxybutyric and 3-hydroxyvaleric acids (P3HB/3HV), 3-hydroxybutyric and 3-hydroxyhexanoic acids (P3HB/3HHx) were prepared using the solvent evaporation technique, from double emulsions. The study addresses the influence of the chemical compositions on the size and ?-potential of microparticles. P3HB microparticles loaded with doxorubicin have been prepared and investigated. Their average diameter and ?-potential have been found to be dependent upon the level of loading (1, 5, and 10 % of the polymer mass). Investigation of the in vitro drug release behavior showed that the total drug released from the microparticle into the medium increased with mass concentration of the drug. In this study mouse fibroblast NIH 3T3 cells were cultivated on PHA microparticles, and results of using fluorescent DAPI DNA stain, and MTT assay showed that microparticles prepared from PHAs of different chemical compositions did not exhibit cytotoxicity to cells cultured on them and proved to be highly biocompatible. Cell attachment and proliferation on PHA microparticles were similar to those on polystyrene. The cytostatic drug encapsulated in P3HB/3HV microparticles has been proven to be effective against HeLa tumor cells. В© 2013 Springer Science+Business Media New York.

Scopus
Держатели документа:
Institute of Biophysics, SB RAS, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Institute of Modern Biology and Biotechnology, Siberian Federal University, Svobodny Av. 79, Krasnoyarsk 660041, Russian Federation
Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
Engineering Systems Division, Massachusetts Institute of Technology, Cambridge, MA 02139, United States
Health Sciences Technology Division, Massachusetts Institute of Technology, Cambridge, MA 02139, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Murueva, A.V.; Shishatskaya, E.I.; Kuzmina, A.M.; Volova, T.G.; Sinskey, A.J.

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The physicochemical properties of polyhydroxyalkanoates with different chemical structures / T. G. Volova [et al.] // Polymer Science - Series A. - 2013. - Vol. 55, Is. 7. - P427-437, DOI 10.1134/S0965545X13070080 . - ISSN 0965-545X
Кл.слова (ненормированные):
Amorphous and crystalline phasis -- Degrees of crystallinity -- Physicochemical property -- Poly(3-hydroxybutirate) -- Polyhydroxyalkanoate copolymer -- Temperature characteristic -- Thermal degradation temperatures -- Thermoplastic materials -- Copolymers -- Monomers -- Thermoplastic elastomers -- Structure (composition)
Аннотация: A set of polyhydroxyalkanoates are synthesized, and a comparative study of their physicochemical properties is performed. The molecular masses and polydispersities of polyhydroxyalkanoates are found to be independent of their chemical structures. It is shown that the temperature characteristics and degrees of crystallinity of polyhydroxyalkanoates are affected by the chemical compositions of the monomers and their quantitative contents in the polymers. The incorporation of 4-hydroxybutyrate, 3-hydroxyvalerate, and 3-hydroxyhexanoate units into the chain of poly(3-hydroxybutyrate) decreases its melting point and thermal degradation temperature relative to these parameters of a homogeneous poly(3-hydroxybutyrate) sample (175 В± 5 C and 275 В± 5 C, respectively). The higher the content of the second monomer units in the poly(3-hydroxybutirate) chain, the greater the changes. The degrees of crystallinity of polyhydroxyalkanoate copolymers are generally lower than that of poly(3-hydroxybutyrate) (75 В± 5%). The effect on the ratio of the amorphous and crystalline phases of the copolymer samples becomes more pronounced in the series 3-hydroxy-valerate-3-hydroxyhexanoate-4- hydroxybutyrate. The prepared samples exhibit different properties ranging from rigid thermoplastic materials to engineering elastomers. В© 2013 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, str. 50, Krasnoyarsk 660036, Russian Federation
Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk 660041, Russian Federation
Siberian State Technological University, pr. Mira 82, Krasnoyarsk 660049, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk 660036, Russian Federation
Massachusetts Institute of Technology, Cambridge, MA, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Zhila, N.O.; Shishatskaya, E.I.; Mironov, P.V.; Vasil'Ev, A.D.; Sukovatyi, A.G.; Sinskey, A.J.

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Effects of intracellular poly(3-hydroxybutyrate) reserves on physiological-biochemical properties and growth of Ralstonia eutropha / T. G. Volova [et al.] // Research in Microbiology. - 2013. - Vol. 164, Is. 2. - P164-171, DOI 10.1016/j.resmic.2012.10.008 . - ISSN 0923-2508
Кл.слова (ненормированные):
Granules -- PHA cycle -- Poly(3-hydroxybutyrate) -- Ralstonia eutropha -- poly(3 hydroxybutyric acid) -- article -- bacterial growth -- bacterial strain -- bacterium culture -- cell division -- cell granule -- cell size -- controlled study -- Cupriavidus necator -- electron microscopy -- nonhuman -- polymer production -- priority journal -- Cupriavidus necator -- Cytoplasmic Granules -- Hydroxybutyrates -- Microscopy, Electron, Transmission -- Polyesters -- Bacteria (microorganisms) -- Cupriavidus necator
Аннотация: Microbial polyhydroxyalkanoates (PHAs), because of their well studied complex physiology and commercial potential, are vehicles for carbon and potential storage reduction for many microbial species. Even with the wealth of studies about microbial PHAs in the scientific literature, polymer accumulation and degradation are still not comprehensively understood. Poly(3-hydroxybutyrate) (P3HB) granule formation and polymer mobility were studied here in the bacterium Ralstonia eutropha strain B5786 in autotrophic cultures. Electron microscopy studies revealed decreasing cell size concomitant with enlargement of size and number of intracellular granules, and inhibition of cell division during intracellular polymer production. Activities of key P3HB biosynthetic enzymes demonstrated correlations with each other during polymer accumulation, suggesting an intricately regulated P3HB cycle in autotrophically grown R. eutropha cells. В© 2012 .

Scopus
Держатели документа:
Laboratory of Chemoautotrophic Biosynthesis, Institute of Biophysics of the Siberian Branch of The Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation
Department of Biotechnology, Institute of Fundamental Biology and Biotechnology, Siberian Federal University, 79 Svobodnyi Avenue, Krasnoyarsk 660041, Russian Federation
Department of Biology, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge 02139, MA, United States
Health Sciences Technology Division, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge 02139, MA, United States
Engineering Systems Division, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge 02139, MA, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Zhila, N.O.; Kalacheva, G.S.; Brigham, C.J.; Sinskey, A.J.

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An in vivo study of pha matrices of different chemical composition: Tissue reaction and biodegradation / E. I. Shishatskaya [et al.] // Cellular Transplantation and Tissue Engineering. - 2012. - Vol. 7, Is. 1. - P73-80 . - ISSN 1815-445X
Кл.слова (ненормированные):
Degradable polymer matrices -- Degradation -- PHAs -- Polyhydroxyalkanoates -- Subcutaneous implantation -- Tissue reaction
Аннотация: The study addresses consequences of subcutaneous implantation of film matrices prepared from different PHAs to laboratory animals. No negative effects of subcutaneous implantation of PHA matrices on physiological and biochemical characteristics of the animals were determined. Independently of the matrices composition and duration of the contact with the internal environment of the organism we did not observe any deviations in the behavior of animals, their growth and development, as well as blood functions. Response of the tissues to PHA matrices was comparable with the response to polylactide, but substantially less expressed at the earlier time periods after implantation. Tissues response to implantation of PHA of all types is characterized by short-term (up to 2 weeks) post-traumatic inflammation with formation of fibrous capsules by 30th-60th days with the thickness less than 100 microns, which get thinner down to 40-60 microns by 180th day as the result of involution. No differences in response of tissues and the whole organism were observed for the matrices produced from the homopolymer of 3-hydroxybutyric acid (P3HB), copolymers of 3-hydroxybutyric and 4-hydroxybutyric acids (P3HB/4HB), 3-hydroxybutyric acid and 3-hydroxyvalerianic acids (P3HB/3HV), 3-hydroxybutyric and 3-hydroxyhexanoate acids (P3HB/3HH). Macrophages and foreign-body giant cells actively participate in the response of the tissues to PHAs. In the studied conditions matrices from the copolymers containing 3-hydroxyhexanoate and 4 hydroxybutyrate were determined as more actively degraded PHA. The next less degraded matrices were matrices from the copolymer of P3HB/3HV and the most resistant were P3HB matrices. The slower degradation of PHA matrices was accompanied by delayed development of giantcells response. The studied PHA matrices can be placed in the following range by their degradation: P3HB/3HH - P3HB/4HB - P3HB/HV - P3HB.

Scopus
Держатели документа:
Institute of Modern Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Biophysics SB RAS, Krasnoyarsk, Russian Federation
Massachusetts Institute of Technology, Cambridge, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Shishatskaya, E.I.; Nikolaeva, E.D.; Goreva, A.V.; Brigham, C.J.; Volova, T.G.; Sinskey, A.J.

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Biodegradation of polyhydroxyalkanoate films in natural environments / A. N. Boyandin [et al.] // Macromolecular Symposia. - 2012. - Vol. 320, Is. 1. - P38-42, DOI 10.1002/masy.201251004 . - ISSN 1022-1360
Кл.слова (ненормированные):
biodegradation -- biopolymers -- microbial degradation -- polyhydroxyalkanoates -- Acinetobacters -- Acremonium -- Alcaligenes -- Burkholderia -- Degradation rate -- Degrading activities -- Degrading bacteria -- Enterobacter -- Hydroxyvalerate -- Mass loss -- Microbial degradation -- Micromycetes -- Natural environments -- Paecilomyces -- Poly-3-hydroxybutyrate -- Poly-hydroxyalkanoate -- Polyhydroxyalkanoates -- SIBERIA -- South China sea -- Stenotrophomonas -- Trichoderma -- Tropical soils -- Viet Nam -- Xanthomonas -- Bacteria -- Bacteriology -- Biopolymers -- Degradation -- Seawater -- Soils -- Tropics -- Biodegradation
Аннотация: Biodegradation of film specimens from polyhydroxyalkanoates (PHAs) of two types - poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-3- hydroxyvalerate (PHBV) - was analysed in different environments: tropical sea waters of the South China Sea (Nha Trang, Vietnam) and soils in the environs of Hanoi (Vietnam), Nha Trang (Vietnam) and Krasnoyarsk (Siberia, Russia). In seawater, the mass loss of the specimens of both types was almost equal. However, in tropical soils, PHB degraded quicker than PHBV. In the Siberian soil, the degradation rate of the PHBV was generally higher than that of PHBV. Analysis of molecular mass of PHA specimens showed its decreasing during biodegradation. In the tropical sea conditions, PHA degrading microorganisms were represented by bacteria of Enterobacter, Bacillus and Gracilibacillus genera. Among PHA degrading bacteria, Burkholderia, Alcaligenes, Bacillus, Mycobacterium and Streptomyces genera were identified in Vietnamese soils, and Variovorax, Stenotrophomonas, Acinetobacter, Pseudomonas, Bacillus and Xanthomonas genera in Siberian soils. Micromycetes of Gongronella, Paecilomyces, Penicillium and Trichoderma genera exhibited PHA degrading activity in Vietnamese soils, and Paecilomyces, Penicillium, Acremonium, Verticillium and Zygosporium genera - in Siberian soils. Copyright В© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Scopus
Держатели документа:
Institute of Biophysics, SB RAS, 50/50 Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk, 660041, Russian Federation
Joint Vietnam-Russian Tropical Research and Technological Centre, Nguyen Van Huyen, Nghia Do, Cau Giay, Hanoi, Viet Nam
Institute of Chemical Biology and Fundamental Medicine, SB RAS, 8 Lavrentiev Ave., Novosibirsk, 630090, Russian Federation
Massachusetts Institute of Technology, Cambridge, MA 02139, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Rudnev, V.P.; Ivonin, V.N.; Prudnikova, S.V.; Korobikhina, K.I.; Filipenko, M.L.; Volova, T.G.; Sinskey, A.J.

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Comparative investigation of polyhydroxyalkanoate scaffolds with various chemical compositions / E. D. Nikolaeva [и др.] // Cellular Transplantation and Tissue Engineering. - 2011. - Vol. 6, Is. 4. - С. 54-63 . - ISSN 1815-445X
Кл.слова (ненормированные):
Biopolymers -- Scaffolds -- Tissue engineering
Аннотация: The authors have constructed and characterized a series of membranes based on resorbable polyhydroxyalkanoates of different compositions. Five PHA types have been studied: a homopolymer of 3-hydroxybutyric acid, copolymers of 3-hydroxybutyric and 4-hydroxybutyric acids, 3-hydroxybutyric and 3-hydroxyvaleric acids, 3-hydroxybutyric and 3-hydroxyhexanoic acids. Scanning electron microscopy and atomicforce microscopy were used to examine the microstructure of membrane surfaces, showing that membranes based on the copolymer of 3-hydroxybutyrate and 3-hydroxyhexanoate had the roughest surface, while membranes based on the copolymer of 3-hydroxybutyrate and 3-hydroxyvalerate had the smoothest surface. The contact angle for water in air was smaller and hydrophilic properties better in the copolymer membranes than in the membranes based on the high-crystallinity homopolymer of 3-hydroxybutyric acid. The culture of mouse fibroblast cell line NIH 3,3 was used to test PHAbased membranes; results of fluorescent probes of DNA DAPI and the MTT assay show that membranes based on studied PHAs are not cytotoxic on direct contact with cells and are highly biocompatible; their adhesive properties and ability to maintain fibroblast proliferation are similar to those of polystyrene and better than those of polylactic acid membranes.

Scopus
Держатели документа:
Institute of Biophisycs, SB RAS, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, RAS, Moscow, Russian Federation
Massachusetts Institute of Technology, Cambridge, United States : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Nikolaeva, E.D.; Shishatskaya, E.I.; Mochalov, K.E.; Volova, T.G.; Sinsky, A.J.

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Biodegradation of polyhydroxyalkanoates (PHAs) in the South China Sea and identification of PHA-degrading bacteria / T. G. Volova [et al.] // Microbiology. - 2011. - Vol. 80, Is. 2. - P252-260, DOI 10.1134/S0026261711020184 . - ISSN 0026-2617
Кл.слова (ненормированные):
biodegradation in marine environments -- microbial PHA degraders -- PHA -- polyhydroxyalkanoates -- Bacillus (bacterium) -- Bacillus sp. -- Bacteria (microorganisms) -- Enterobacter -- Enterobacter cloacae -- Gracilibacillus -- Prospect Hill virus
Аннотация: The biodegradation patterns of two types of PHA, a 3-hydroxybutyrate (3-PHB) polymer and a 3-hydroxybutyrate and 3-hydroxyvalerate (3-PHB/3-PHV) copolymer, were studied in tropical marine environments (Dam Bay, South China Sea, Nha Trang, Vietnam). No reliable differences in the degradation of 3-PHB and 3-PHB/3-PHV were revealed. It was shown that the degradation process depended mainly on the shape of a polymer product and its production method: the degradation of polymer films was found to be more active than that of molded solids. A decrease in the molecular mass of both types of PHA was detected in the course of the degradation of PHA samples. However, the degree of PHA crystallinity did not change; that is, the levels of degradation of both the amorphous and crystalline phases of PHA were almost the same. Among microbial PHA degraders, three bacterial strains, Bacillus sp. IBP-V002, Enterobacter cloacae sp. IBP-V001, and Gracilibacillus sp. IBP-V003, were identified based on the results of morphological, biochemical, and molecular phylogenetic analyses. The ability of the representatives of the genera Gracilibacillus and Enterobacter to degrade PHA was revealed for the first time. В© 2011 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Moscow, Russian Federation
Marine Department, Joint Russian-Vietnamese Tropical Research and Test Center, Nha Trang, Viet Nam : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Boyandin, A.N.; Vasil'ev, A.D.; Karpov, V.A.; Kozhevnikov, I.V.; Prudnikova, S.V.; Rudnev, V.P.; Xuan, B.B.; Dung, V.V.; Gitel'zon, I.I.

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10.

Biodegradation of polyhydroxyalkanoates (PHAs) in tropical coastal waters and identification of PHA-degrading bacteria / T. G. Volova [et al.] // Polymer Degradation and Stability. - 2010. - Vol. 95, Is. 12. - P2350-2359, DOI 10.1016/j.polymdegradstab.2010.08.023 . - ISSN 0141-3910
Кл.слова (ненормированные):
Biopolymers in marine environment -- Degradation of polymers -- PHA properties -- PHA-degrading microorganisms -- Polyhydroxyalkanoates, PHA -- 16S rRNA -- 3-hydroxybutyric acid -- Amorphous phase -- Bacillus sp -- Biodegradation rate -- Chemical compositions -- Coastal waters -- Degradation rate -- Degrading bacteria -- Degree of crystallinity -- Enterobacter -- Hydroxyvalerate -- Marine environment -- PHA properties -- PHA-degrading microorganisms -- Polydispersity indices -- Polyhydroxyalkanoates -- Polymer chains -- Preparation technique -- Sole carbon source -- South China Sea -- Viet Nam -- Acids -- Bacteriology -- Biodegradable polymers -- Biodegradation -- Biomolecules -- Biopolymers -- Microorganisms -- Organic polymers -- Polydispersity -- Polymer films -- Polymers -- RNA -- Seawater -- Degradation
Аннотация: Biodegradability patterns of two PHAs: a polymer of 3-hydroxybutyric acid (3-PHB) and a copolymer of 3-hydroxybutyric and 3-hydroxyvaleric acids (3-PHB/3-PHV) containing 11 mol% of hydroxyvalerate, were studied in the tropical marine environment, in the South China Sea (Nha Trang, Vietnam). No significant differences have been observed between degradation rates of 3-PHB and 3-PHB/3-PHV specimens; it has been found that under study conditions, biodegradation is rather influenced by the shape of the polymer item and the preparation technique than by the chemical composition of the polymer. Biodegradation rates of polymer films in seawater have been found to be higher than those of compacted pellets. As 3-PHB and 3-PHB/3-PHV are degraded and the specimens lose their mass, molecular weight of both polymers is decreased, i.e. polymer chains get destroyed. The polydispersity index of the PHAs grows significantly. However, the degree of crystallinity of both PHAs remains unchanged, i.e. the amorphous phase and the crystalline one are equally disintegrated. PHA-degrading microorganisms were isolated using the clear-zone technique, by inoculating the isolates onto mineral agar that contained PHA as sole carbon source. Based on the 16S rRNA analysis, the PHA-degrading strains were identified as Enterobacter sp. (four strains), Bacillus sp. and Gracilibacillus sp.В© 2010 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
Siberian Federal University, 79 Svobodny av., Krasnoyarsk 660041, Russian Federation
L.V. Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk 660036, Russian Federation
A.N. Severtsov Institute of Ecology and Evolution RAS, 33 Leninskij Prospect, Moscow 119071, Russian Federation
Institute of Chemical Biology and Fundamental Medicine, Siberian Branch, Russian Academy of Sciences, 8 Lavrentiev Ave., Novosibirsk 630090, Russian Federation
Joint Russian-Vietnam Tropical Research and Test Centre, Coastal Branch, 30 Nguyen Thien Thuat, Nha Trang, Viet Nam : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Boyandin, A.N.; Vasiliev, A.D.; Karpov, V.A.; Prudnikova, S.V.; Mishukova, O.V.; Boyarskikh, U.A.; Filipenko, M.L.; Rudnev, V.P.; Ba Xuan, B.; Vit Dung, V.; Gitelson, I.I.

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11.

Microbial polymers as a degradable carrier for pesticide delivery / O. N. Voinova [et al.] // Applied Biochemistry and Microbiology. - 2009. - Vol. 45, Is. 4. - P384-388, DOI 10.1134/S0003683809040061 . - ISSN 0003-6838
Аннотация: The possibility of use of polyhydroxyalkanoates (PHAs), biodegradable microbial polyesters, as a carrier for pesticides (?-hexachlorcyclohexane and lindane) for targeted and controlled delivery of these compounds to soil was investigated. The kinetics of polymer degradation and the dynamics of pesticide release from the extended-release formulations was studied. It is shown that pesticides embedded in a degradable polymer (PHA) carrier are released gradually and slowly, without surges, as the polymer is degraded by the soil micro-flora. The microbial soil component actively responded to the addition of the polymer as an additional nutrient substrate: the latter was degraded and then utilized. The rate of the pesticide release to the soil can be regulated by varying the polymer-pesticide ratio. В© 2009 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Krasnoyarsk, 660041, Russian Federation
Institute of Forestry, Siberian Branch Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Voinova, O.N.; Kalacheva, G.S.; Grodnitskaya, I.D.; Volova, T.G.

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12.

Biosynthesis of multi-component polyhydroxyalkanoates by the bacterium Wautersia eutropha / T. G. Volova, G. S. Kalacheva, A. Steinbuchel // Macromolecular Symposia. - 2008. - Vol. 269, Is. 1. - P1-7, DOI 10.1002/masy.200850901 . - ISSN 1022-1360
Кл.слова (ненормированные):
Autotrophic and mixotrophic growth -- Multi-component polyhydroxyalkanoates -- Wautersia eutropha -- Bacteriology -- Biochemical engineering -- Biochemistry -- Biopolymers -- Biotechnology -- Carboxylic acids -- Fatty acids -- Ketones -- Monomers -- Polymers -- Autotrophic and mixotrophic growth -- Carbon chains -- Carbon nutritions -- Even numbers -- Growth conditions -- Hydroxybutyrate -- Hydroxyvalerate -- Mixotrophic -- Multi-component polyhydroxyalkanoates -- Odd numbers -- Physico-chemical properties -- Polyhydroxyalkanoates -- Synthesis of -- Wautersia eutropha -- Wild types -- Acids
Аннотация: The study addresses the effect of different conditions of carbon nutrition on synthesis of polyhydroxyalkanoates by the bacterium Wautersia eutropha. In experiments with two wild type strains (H16 and 65786), it has been first found that under mixotrophic growth conditions - Co2 + co-substrate (alkanoic acids) - bacteria can synthesize multi-component PHAs, consisting of short- and medium-chainlength monomers with carbon chains containing 4 to 8 atoms. It has been shown that PHA composition is determined by the type of the co-substrate. Fatty acids with odd number of carbons induce bacteria to synthesize four- and five-component PHAs with hydroxybutyrate, hydroxyvalerate as major monomers and hydroxyhexanoate, hydroxyheptanoate and hydroxyoctanoate as minor, occasionally occurring, ones. Fatty acids with even number of carbons induce synthesis of not only their respective monomers (hydroxyhexanoate and hydroxyoctanoate) but also hydroxyvalerate, making possible synthesis of four-component PHAs, containing hydroxybutyrate and hydroxyhexanoate as major components (up to 18 mol%). A family of short- and medium-chain-length four- and five-component PHAs were synthesized and their physicochemical properties examined. Copyright В© 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Scopus
Держатели документа:
Institute of Biophysics, SB, RAS, 660036 Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation
Institute of Molecular Microbiology and Biotechnology, Munster, Germany : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Kalacheva, G.S.; Steinbuchel, A.

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13.

Luminous bacteria as producers of polyhydroxyalkanoates / A. Boyandin [et al.] // Macromolecular Symposia. - 2008. - Vol. 269, Is. 1. - P17-22, DOI 10.1002/masy.200850904 . - ISSN 1022-1360
Кл.слова (ненормированные):
Luminous bacteria -- Polyhydroxyalkanoates -- Polyhydroxybutyrate -- ABS resins -- Acids -- Bacteriology -- Batch cell culture -- Biological materials -- Biomass -- Biopolymers -- Biotechnology -- Cell culture -- Esters -- Hydrocarbons -- Organic compounds -- Polymers -- Renewable energy resources -- Supramolecular chemistry -- Batch cultures -- Dry cells -- Luminous bacteria -- Micro-organisms -- Photobacterium leiognathi -- Photobacterium phosphoreum -- Polyhydroxyalkanoates -- Polyhydroxybutyrate -- Polymer yields -- Vibrio fischeri -- Bioluminescence
Аннотация: The study addresses the ability of luminous bacteria of different taxa (Photobacterium leiognathi, Photobacterium phosphoreum, Vibrio harveyi, Vibrio fischeri) to synthesize polyesters of hydrocarbon acids (polyhydroxyalkanoates, PHAs) as storage macromolecules. The screened strains widely varied in their PHA productivity. Conditions for attaining high polymer yields (including two- and three-component polymers) in batch culture have been determined. The attained polymer yields reached 40-70% of dry cell biomass. The results suggest a conclusion that luminous microorganisms can be considered as producers of multi-component PHAs. Copyright В© 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Scopus
Держатели документа:
Institute of Biophysics, SB, RAS, Akademgorodok 50/ 50, Krasnoyarsk, 660036, Russian Federation
Siberian Federal University, Svobodnyi Av. 79, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.; Kalacheva, G.S.; Medvedeva, S.; Rodicheva, E.; Volova, T.G.

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14.

Synthesis of reserve polyhydroxyalkanoates by luminescent bacteria / A. N. Boyandin [et al.] // Microbiology. - 2008. - Vol. 77, Is. 3. - P318-323, DOI 10.1134/S0026261708030119 . - ISSN 0026-2617
Кл.слова (ненормированные):
Biosynthesis -- Chemical structure -- Luminescent bacteria -- Polyhydroxyalkanoates (PHA) -- Bacteria (microorganisms) -- Photobacterium leiognathi -- Vibrio harveyi
Аннотация: The ability of marine luminescent bacteria to synthesize polyesters of hydroxycarboxylic acids (polyhydroxyalkanoates, PHA) as reserve macromolecules was studied. Twenty strains from the collection of the luminescent bacteria CCIBSO (WDCM839) of the Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, assigned to different taxa (Photobacterium leiognathi, Ph. phosphoreum, Vibrio harveyi, and V. fischeri) were analyzed. The most productive strains were identified, and the conditions ensuring high polymer yields in batch culture (40-70% of the cell dry mass weight) were determined. The capacity for synthesizing two-and three-component polymers containing hydroxybutyric acid as the main monomer and hydroxyvaleric and hydroxyhexanoic acids was revealed in Ph. leiognathi and V. harveyi strains. The results allow luminescent microorganisms to be regarded as new producers of multicomponent polyhydroxyalkanoates. В© 2008 MAIK Nauka.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Siberian Federal University, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Kalacheva, G.S.; Rodicheva, E.K.; Volova, T.G.

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15.

Biosynthesis of multicomponent polyhydroxyalkanoates by Wautersia eutropha / T. G. Volova [et al.] // Microbiology. - 2007. - Vol. 76, Is. 6. - P704-711, DOI 10.1134/S0026261707060082 . - ISSN 0026-2617
Кл.слова (ненормированные):
Autotrophic and mixotrophic growth -- Multicomponent polyhydroxyalkanoates -- Wautersia eutropha -- Bacteria (microorganisms) -- Cupriavidus necator
Аннотация: The effect of carbon supply on polyhydroxyalkanoate (PHA) synthesis by bacteria Wautersia eutropha was studied. Synthesis of multicomponent PHA composed of short-and long-chain monomers (C4-C8) by two natural strains (H16 and B5786) under mixotrophic conditions (CO2 + alkanoic acids as cosubstrates) was demonstrated for the first time. The PHA composition was shown to be dependent on the cosubstrate type. In the presence of odd fatty acids, four-and five-component polymers were synthesized; hydroxybutyrate, hydroxyvalerate, and hydroxyheptanoate were the major monomers, while hydroxyhexanoate and hydroxyoctanoate were minor. In the presence of even fatty acids, PHA contained not only the corresponding molecules (hydroxyhexanoate and hydroxyoctanoate), but also hydroxyvalerate; synthesis of four-component PHA which contain mainly hydroxybutyrate and hydroxyhexanoate (up to 18 mol %) is therefore possible. A series of four-and five-component PHA was synthesized and their physicochemical characteristics were determined. В© 2007 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Krasnoyarsk, Russian Federation
Institute of Molecular Biology and Biotechnology, Munster, Germany : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Kalacheva, G.S.; Kozhevnikov, I.V.; Steinbuchel, A.

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16.

Fatty acid composition of Wautersia eutropha lipids under conditions of active polyhydroxyalkanoates synthesis / G. S. Kalacheva, T. G. Volova // Microbiology. - 2007. - Vol. 76, Is. 5. - P535-540, DOI 10.1134/S0026261707050049 . - ISSN 0026-2617
Кл.слова (ненормированные):
Fatty acids -- Polyhydroxyalkanoates -- Wautersia eutropha -- Cupriavidus necator
Аннотация: The fatty acid composition of the lipids of a Wautersia eutropha polyhydroxyalkanoate-producing strain was studied by chromato-mass spectrometry. A total of 27 fatty acids were identified; their distribution in the cell fractions was determined. In the cytoplasmic membrane, palmitic, palmitoleic, and cis-vaccenic acids were the major components. Long-chain ?-hydroxy acids and myristic acids (components of the lipopolysaccharides of the cell envelope) predominated in the fraction of strongly bound lipids. When the polymer was actively synthesized, the content of cyclopropane acids in the easily extracted lipids increased and the content of the corresponding monoenoic acids decreased. The strongly bound lipids had a high content of long-chain ?-hydroxy acids (more than 50% of the total fatty acids). These results made it possible to determine the source of polyhydroxyalkanoate (PHA) contamination and to choose the strategy for their purification. В© 2007 Pleiades Publishing, Ltd.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Division, Russian Academy of Sciences, Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kalacheva, G.S.; Volova, T.G.

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17.

Luminous bacteria as potential producers of resorbed polyhydroxyalkanoate polyesters / A. N. Boyandin [et al.] // Doklady Biochemistry and Biophysics. - 2007. - Vol. 416, Is. 1-6. - P248-251, DOI 10.1134/S1607672907050067 . - ISSN 1607-6729
Кл.слова (ненормированные):
photoprotein -- polyester -- polyhydroxyalkanoic acid -- article -- bacterium -- chemistry -- chemoluminescence -- classification -- genetic procedures -- genetics -- metabolism -- Photobacterium -- phylogeny -- time -- Bacteria -- Biosensing Techniques -- Chemiluminescent Measurements -- Luminescent Proteins -- Photobacterium -- Phylogeny -- Polyesters -- Polyhydroxyalkanoates -- Time Factors -- Bacteria (microorganisms)

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Kalacheva, G.S.; Rodicheva, E.K.; Volova, T.G.

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18.

Degradation of polyhydroxyalkanoates in eutrophic reservoir / T. G. Volova [et al.] // Polymer Degradation and Stability. - 2007. - Vol. 92, Is. 4. - P580-586, DOI 10.1016/j.polymdegradstab.2007.01.011 . - ISSN 0141-3910
Кл.слова (ненормированные):
16S rDNA -- Degradation -- DGGE -- Polyhydroxyalkanoates -- Reservoir -- Biodegradation -- Climate change -- Ecosystems -- Eutrophication -- Genetic engineering -- Physical chemistry -- Eutrophic reservoir -- Phylogenetic analysis -- Physicochemical properties -- Polyhydroxyalkanoates -- Organic polymers
Аннотация: During the summers of 1999-2001 the dynamics of polyhydroxyalkanoate degradation in a small recreational eutrophic reservoir was studied experimentally. It has been shown that biodegradation of polyhydroxyalkanoates in the environment is determined by the structure and physicochemical properties of the polymer and by local weather conditions, which influence the state of the aquatic ecosystem. Species (clones) of bacteria able to utilize polyhydroxyalkanoates in the reservoir were identified using molecular phylogenetic analysis of 16S rRNA genes. В© 2007 Elsevier Ltd. All rights reserved.

Scopus
Держатели документа:
Siberian Federal University, Svobodny av. 79, Krasnoyarsk, 660041, Russian Federation
Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Gladyshev, M.I.; Trusova, M.Y.; Zhila, N.O.

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19.

Physiological-biochemical properties and the ability to synthesize polyhydroxyalkanoates of the glucose-utilizing strain of the hydrogen bacterium Ralstonia eutropha B8562 / T. G. Volova [et al.] // Applied Microbiology and Biotechnology. - 2006. - Vol. 73, Is. 3. - P429-433, DOI 10.1007/s00253-006-0460-0 . - ISSN 0175-7598
Кл.слова (ненормированные):
Biochemistry -- Carbon -- Genetic engineering -- Glucose -- Hydrogen -- Polyesters -- Cultural properties -- Glucose-utilizing mutant strain -- Nitrogen deficiency -- Polyhydroxyalkanoate (PHA) -- Bacteria -- 3 hydroxybutyric acid -- carbon dioxide -- fructose -- glucose -- hydrogen -- monomer -- polyhydroxyalkanoic acid -- sugar -- bacterium -- carbon -- comparative study -- energy -- ester -- experimental study -- glucose -- hydrogen -- physicochemical property -- article -- bacterial strain -- bacterium culture -- bacterium mutant -- biomass -- chemical analysis -- Cupriavidus necator -- energy consumption -- genetic analysis -- nonhuman -- synthesis -- Bacteria (microorganisms) -- Cupriavidus necator
Аннотация: Physiological-biochemical, genetic, and cultural properties of the glucose-utilizing mutant strain Ralstonia eutropha B8562 have been compared with those of its parent strain R. eutropha B5786. It has been shown that growth characteristics of the strain cultured on glucose as the sole carbon and energy source are comparable with those of the parent strain. Strain B8562 is characterized by high polyhydroxyalkanoate (PHA) yields on different carbon sources (CO2, fructose, and glucose). PHA accumulation in the strain batch cultured on glucose under nitrogen deficiency reaches 90 %. The major monomer in the PHA is ?-hydroxybutyric acid (more than 99 mol %); the identified minor components are ?-hydroxyvaleric acid (0.25-0.72 mol %) and ?-hydroxyhexanoic acid (0.08-1.5 mol %). The strain is a promising PHA producer on available sugar-containing media with glucose. В© Springer-Verlag 2006.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russian Federation
Krasnoyarsk State University, Svobodny av. 79, 660041 Krasnoyarsk, Russian Federation : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Trusova, M.Y.; Kalacheva, G.S.; Kozhevnicov, I.V.

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20.

Physiological-biochemical properties and the ability to synthesize polyhydroxyalkanoates of the glucose-utilizing strain of the hydrogen bacterium Ralstonia eutropha B8562. / T. G. Volova [et al.] // Applied microbiology and biotechnology. - 2006. - Vol. 73, Is. 2. - P429-433, DOI 10.1007/s00253-006-0460-0 . - ISSN 0175-7598
Кл.слова (ненормированные):
beta hydroxyvaleric acid -- beta-hydroxyvaleric acid -- carbon dioxide -- ester -- fatty acid -- fructose -- glucose -- hexanoic acid derivative -- hydrogen -- hydroxyacid -- oxygen -- polymer -- ribosome RNA -- valeric acid derivative -- article -- biotechnology -- chemistry -- metabolism -- methodology -- Wautersia eutropha -- Biotechnology -- Carbon Dioxide -- Cupriavidus necator -- Esters -- Fatty Acids -- Fructose -- Glucose -- Hexanoic Acids -- Hydrogen -- Hydroxy Acids -- Oxygen -- Pentanoic Acids -- Polymers -- RNA, Ribosomal
Аннотация: Physiological-biochemical, genetic, and cultural properties of the glucose-utilizing mutant strain Ralstonia eutropha B8562 have been compared with those of its parent strain R. eutropha B5786. It has been shown that growth characteristics of the strain cultured on glucose as the sole carbon and energy source are comparable with those of the parent strain. Strain B8562 is characterized by high polyhydroxyalkanoate (PHA) yields on different carbon sources (CO(2), fructose, and glucose). PHA accumulation in the strain batch cultured on glucose under nitrogen deficiency reaches 90 %. The major monomer in the PHA is beta-hydroxybutyric acid (more than 99 mol %); the identified minor components are beta-hydroxyvaleric acid (0.25-0.72 mol %) and beta-hydroxyhexanoic acid (0.08-1.5 mol %). The strain is a promising PHA producer on available sugar-containing media with glucose.

Scopus
Держатели документа:
Institute of Biophysics, Siberian Branch of Russian Academy of Sciences, Akademgorodok, 660036 Krasnoyarsk, Russia. : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Trusova, M.Y.; Kalacheva, G.S.; Kozhevnicov, I.V.

Найти похожие