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Microbial degradation of polyhydroxyalkanoates in tropical soils / A. N. Boyandin [et al.] // Int. Biodeterior. Biodegrad. - 2013. - Vol. 83. - P77-84, DOI 10.1016/j.ibiod.2013.04.014. - Cited References: 74. - This study was financially supported by Project "Biotechnologies of novel biomaterials" (Agreement No. 11.G34.31.0013) in accordance with Resolution No. 220 of the Government of the Russian Federation of April 9, 2010, "On measures designed to attract leading scientists to the Russian institutions of higher learning". . - 8. - ISSN 0964-8305

РУБ Biotechnology & Applied Microbiology + Environmental Sciences
Рубрики:
POLY-BETA-HYDROXYBUTYRATE
   CHAIN-LENGTH POLYHYDROXYALKANOATES
   POLY(3-HYDROXYBUTYRATE) DEPOLYMERASE
   COASTAL WATERS
   PHA FILMS
   BIODEGRADATION
   BACTERIA
   IDENTIFICATION
   POLYESTERS
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
Кл.слова (ненормированные):
Polyhydroxyalkanoates (PHAs) -- Biopolymers -- Biopolymer properties -- Soil biodegradation -- PHA degrading microorganisms
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. (C) 2013 Elsevier Ltd. All rights reserved.

Держатели документа:
[Boyandin, Anatoly N.
Volova, Tatiana G.
Gitelson, Iosif I.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia
[Prudnikova, Svetlana V.
Volova, Tatiana G.] Siberian Fed Univ, Krasnoyarsk, Russia
[Karpov, Valery A.] Russian Acad Sci, AN Severtsov Inst Ecol & Evolut, Moscow, Russia
[Ivonin, Vladimir N.
Ngoc Lanh Do
Thi Hoai Nguyen
Thi My Hiep Le
Filichev, Nikolay L.
Levin, Alexander L.] Joint Russian Vietnam Trop Res & Test Ctr, Hanoi, Vietnam
[Filipenko, Maxim L.] Russian Acad Sci, Siberian Branch, Inst Chem Biol & Fundamental Med, Novosibirsk, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A.N.; Prudnikova, S.V.; Karpov, V.A.; Ivonin, V.N.; Do, N.L.; Nguyen, T.H.; Le, TMH; Filichev, N.L.; Levin, A.L.; Filipenko, M.L.; Volova, T.G.; Gitelson, I.I.

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Degradable Polyhydroxyalkanoates as Herbicide Carriers [Text] / S. V. Prudnikova [et al.] // J. Polym. Environ. - 2013. - Vol. 21, Is. 3. - P675-682, DOI 10.1007/s10924-012-0561-z. - Cited References: 31. - We thank Dr. Christopher Brigham for critical review of the manuscript prior to submission. The study was supported by the project initiated by the Government of the Russian Federation for governmental support of scientific research conducted under the guidance of leading scientists at Russian institutions of higher learning (Agreement No. 11.G34.31.0013). . - 8. - ISSN 1566-2543

РУБ Engineering, Environmental + Polymer Science
Рубрики:
CONTROLLED-RELEASE
   SOIL
   BIODEGRADATION
   POLYESTERS
   PESTICIDE
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   MICROSPHERES
   BACTERIA
Кл.слова (ненормированные):
Herbicide -- Haloxyfop-P-methyl -- Zellek Super -- Sustained-release formulations -- Polyhydroxyalkanoates -- Plant growth suppression
Аннотация: The biodegradable polymer poly(3-hydroxybutyrate-co-3-hydroxyvalerate) has been used to design experimental sustained-release formulations of the herbicide Zellek Super in the form of films and microgranules. The kinetics of polymer degradation and the dynamics of herbicide release show that the rate and extent of herbicide release from the polymer matrix into the soil depends on the geometry of the carrier and the proportion of the pesticide loaded into it (polymer/pesticide mass ratio). Experiments with the creeping bentgrass (Agrostis stolonifera L.) show that the formulations of the herbicide Zellek Super constructed as microgranules and films can be successfully used to suppress the growth of grasses. This study is the first to demonstrate that biodegradable polyhydroxyalkanoates can be used effectively to construct environmentally friendly sustained-release PHA-herbicide systems that can be placed into the soil together with seeds.

Держатели документа:
[Prudnikova, S. V.
Sinskey, A. J.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Boyandin, A. N.
Kalacheva, G. S.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Sinskey, A. J.] MIT, Cambridge, MA 02139 USA : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Prudnikova, S.V.; Boyandin, A.N.; Kalacheva, G.S.; Sinskey, A.J.; Government of the Russian Federation [11.G34.31.0013]

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Biodegradation of polyhydroxyalkanoates by soil microbial communities of different structures and detection of PHA degrading microorganisms [Text] / A. N. Boyandin [et al.] // Appl. Biochem. Microbiol. - 2012. - Vol. 48, Is. 1. - P28-36, DOI 10.1134/S0003683812010024. - Cited References: 39. - The work was supported by the project initiated by the Government of the Russian Federation for governmental support of scientific research conducted under the guidance of leading scientists at Russian institutions of higher learning (Agreement No. 11.G34.31.0013) and the Program of Integrated Research of the Presidium of the Siberian Branch of Russian Academy of Sciences (project no. 96). . - 9. - ISSN 0003-6838

РУБ Biotechnology & Applied Microbiology + Microbiology
Рубрики:
POLY-BETA-HYDROXYBUTYRATE
   CHAIN-LENGTH POLYHYDROXYALKANOATES
   DEGRADATION
   FILMS
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   BACTERIA
   ACID
Аннотация: Biodegradation of microbial linear polymers of hydroxyalkanoic acids (polyhydroxyalkanoates, PHAs) by soil microbial communities of different structures has been studied during two field seasons in different weather conditions. This process was shown to be influenced by the polymer chemical composition, temperature, humidity, and the microbial soil component. The PHA degradation was accompanied by a decrease in the polymer molecular weight and an increase in the degree of crystallinity, indicating the preferential destruction of the amorphous phase compared to the crystalline one. The quantity of the true PHA destructors developing at the surface of the polymer samples was lower than the quantity of accompanying bacteria. The dominant PHA degrading microorganisms under the test conditions were identified as bacteria of the genera Variovorax, Stenotrophomonas, Acinetobacter, Pseudomonas, Bacillus, and Xanthomonas and as micromycetes from Penicillium, Paecilomyces, Acremonium, Verticillium, and Zygosporium.

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SCOPUS,
Полный текст на сайте издателя
Держатели документа:
[Boyandin, A. N.
Volova, T. G.] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Prudnikova, S. V.] Siberian Fed Univ, Krasnoyarsk 660041, Russia
[Filipenko, M. L.
Khrapov, E. A.] Russian Acad Sci, Siberian Branch, Inst Chem Biol & Fundamental Med, Novosibirsk 630090, Russia
[Vasil'ev, A. D.] Russian Acad Sci, Siberian Branch, Kirenskii Inst Phys, Krasnoyarsk 660036, Russia : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Boyandin, A. N.; Prudnikova, S.V.; Filipenko, M.L.; Khrapov, E.A.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Volova, Tatiana G.; Волова, Татьяна Григорьевна; Government of the Russian Federation [11.G34.31.0013]; Presidium of the Siberian Branch of Russian Academy of Sciences [96]

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Electrospinning of polyhydroxyalkanoate fibrous scaffolds: effects on electrospinning parameters on structure and properties [Text] / T. . Volova [et al.] // J. Biomater. Sci.-Polym. Ed. - 2014. - Vol. 25, Is. 4. - P370-393, DOI 10.1080/09205063.2013.862400. - Cited References: 52. - This study was financially supported by Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' (Agreement No. 1 of 15.02.2013 to Agreement No. 11.G34.31.0013) in accordance with Resolution No. 220 of the Government of the Russian Federation of April 9, 2010, 'On measures designed to attract leading scientists to the Russian institutions of higher learning' and Grant of the RF President for supporting young Doctors of Sciences No. MD-3112.2012.4. . - ISSN 0920-5063

РУБ Engineering, Biomedical + Materials Science, Biomaterials + Polymer Science
Рубрики:
TISSUE ENGINEERING APPLICATIONS
   FIBER MATS
   POLY 3-HYDROXYBUTYRATE
   POLY(3-HYDROXYBUTYRATE-CO-3-HYDROXYVALERATE)
   BIOCOMPATIBILITY
   PROLIFERATION
   FABRICATION
   NANOFIBERS
   COPOLYMERS
   MEMBRANES
Кл.слова (ненормированные):
electrospinning -- polyhydroxyalkanoates -- ultrafine fibers -- physical-mechanical properties -- fibroblast cells
Аннотация: In this study, electrospinning was used to prepare ultrafine fibers from PHAs with different chemical compositions: P(3HB) and copolymers: P(3HB-co-4HB), P(3HB-co-3HV), and P(3HB-co-3HHx). The main process parameters that influence ultrafine fiber diameter and properties (polymer concentration, solution feeding rate, working distance, and applied voltage) have been investigated and their effects evaluated. The study revealed electrospinning parameters for the production of high-quality ultrafine fibers and determined which parameters should be varied to tailor the properties of the products. This study is the first to compare biological and physical-mechanical parameters of PHAs with different chemical compositions as dependent upon the fractions of monomers constituting the polymers and ultrafine fiber orientation. Mechanical strength of aligned ultrafine fibers prepared from different PHAs is higher than that of randomly oriented ones; no significant effect of ultrafine fiber orientation on surface properties has been found. None of the fibrous scaffolds produced by electrospinning from PHAs had any adverse effects on attachment, growth, and viability of NIH 3T3 mouse fibroblast cells, and all of them were found to be suitable for tissue engineering applications.

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Scopus
Держатели документа:
[Volova, Tatiana
Sukovatyi, Aleksey
Nikolaeva, Elena] Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk 660036, Russia
[Goncharov, Dmitriy
Shishatskaya, Ekaterina] Siberian Fed Univ, Inst Fundamental Biol & Biotechnol, Krasnoyarsk 660041, Russia
[Shabanov, Alexander] Russian Acad Sci, LV Kirenskii Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia
ИБФ СО РАН
ИФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T...; Goncharov, D...; Sukovatyi, A...; Shabanov, A...; Nikolaeva, E...; Shishatskaya, E...; Project 'Biotechnologies of novel biomaterials: innovative biopolymers and devices for biomedicine' [1, 11.G34.31.0013]; Government of the Russian Federation [220]; RF President for supporting young Doctors of Sciences [MD-3112.2012.4]

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