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Biodegradation of polyhydroxyalkanoates by soil microbial communities of different structures and detection of PHA degrading microorganisms / A. N. Boyandin [et al.] // Appl. Biochem. Microbiol. - 2012. - Vol. 48, Is. 1. - P. 28-36, 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). . - 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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Публикация на русском языке Биодеградация полигидроксиалканоатов почвенными микробиоценозами различной структуры и выявление микроорганизмов-деструкторов [Текст] / А. Н. Бояндин [и др.] // Прикл. биохимия и микробиол. : Наука, 2012. - Т. 48 № 1. - С. 35-44

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

Доп.точки доступа:
Boyandin, A. N.; Бояндин, Анатолий Николаевич; Prudnikova, S. V.; Filipenko, M. L.; Khrapov, E. A.; Vasil'ev, A. D.; Васильев, Александр Дмитриевич; Volova, T. G.; Волова, Татьяна Григорьевна
}
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    Thermal, mechanical and biodegradation studies of biofiller based poly-3-hydroxybutyrate biocomposites / S. Thomas [et al.] // Int. J. Biolog. Macromol. - 2020. - Vol. 155. - P. 1373-1384, DOI 10.1016/j.ijbiomac.2019.11.112. - This study was financially supported by Project “Agropreparations of the new generation: a strategy of construction and realization” (Agreement No 074-02-2018-328) 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”. . - ISSN 1879-0003
   Перевод заглавия: Термические, механические и биодеградационные исследования биокомпозитов на основе бионаполнителей на основе поли-3-гидроксибутирата
Кл.слова (ненормированные):
Poly-3-hydroxybutyrate -- Biocomposite -- Physical properties -- Environmental degradation
Аннотация: Biodegradable poly-3-hydroxybutyrate [P(3HB)] and natural fillers - clay, peat, and birch wood flour – were used to prepare powdered composites to form pellets and granules. Pellets were produced by cold pressing of polymer and filler powder whereas granules were produced from the powders wetted with ethanol. Characterization techniques like IR spectroscopy, differential scanning calorimetry, X-ray analysis, mechanical analysis and electron microscopy were employed to study the properties of the initial P(3HB) and fillers and the composites. Analysis of the IR spectra of the composites showed the absence of chemical bonds between the components, i.e. the composites were physical mixtures. Young's moduli of the pellets prepared from initial materials varied considerably, and the highest value was obtained for P(3HB) pellets (350 MPa). Studies of biodegradation of composite pellets and granules in the soil for 35 days showed that the residual mass of the pellets had decreased to 68% for P(3HB); 56.4% for P(3HB)/peat; 67% for P(3HB)/wood flour, and 64% for P(3HB)/clay; granules exhibited a similar mass loss, residual mass of the granules of P(3HB) was 68.4%, P(3HB)/peat 46.4%; P(3HB)/wood flour 77%, and P(3HB)/clay 74%. This shows the significance of the material as an eco-friendly composite without sacrificing its mechanical properties.

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Держатели документа:
Siberian Federal University, 79 Svobodnyi Av., Krasnoyarsk 660041, Russia
International and Interuniversity Centre for Nano Science and Nano technology, Kottayam, Kerala, India
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia
L.V. Kirensky Institute of Physics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 43/50 Akademgorodok, Krasnoyarsk 660036, Russia
Federal Research Center Krasnoyarsk Scientific Center of the Siberian Branch of Russian, Academy of Sciences, 50 Akademgorodok, Krasnoyarsk 660036, Russia

Доп.точки доступа:
Thomas, Sabu; Shumilova, A. A.; Kiselev, E. G.; Baranovsky, S. V.; Vasiliev, A. D.; Васильев, Александр Дмитриевич; Nemtsev, I. V.; Kuzmin, A. P.; Sukovatyi, A. G.; Avinash, R. Pai; Volova, T. G.
}
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    Биотехнологический потенциал сибирских штаммов базидиальных грибов - продуцентов ферментов лигноцеллюлазного действия / Ю. А. Литовка, И. Н. Павлов, П. В. Маколова [и др.] // Хим. растит. сырья. - 2020. - № 4. - С. 371-383, DOI 10.14258/JCPRM.2020048396. - Библиогр.: 29 . - ISSN 1029-5151. - ISSN 1029-5143
   Перевод заглавия: Biotechnological potential of the Siberian strains of basidiomycetes - producers of lignolytic and cellulolytic enzymes
Кл.слова (ненормированные):
биодеструкция -- ксилотрофы -- базидиальные грибы -- растительные субстраты -- гидродинамическая активация -- твердофазное и глубинное культивирование -- целлюлазы -- лигниназы -- biodegradation -- xylotrophs -- basidiomycetes -- plant substrates -- hydrodynamic activation -- solid-phase and deep cultivation -- cellulases -- ligninases
Аннотация: Представлены результаты исследования дереворазрушающих свойств сибирских штаммов ксилотрофных базидиомицетов Armillaria, Ganoderma, Fomitopsis, Heterobasidion и Porodaedalea. Определены их ростовые параметры и ферментативная активность при твердофазном и глубинном культивировании. Быстрорастущими культурами на целлюлозо-, танинсодержащих средах, хвойных и лиственных субстратах (исходных и гидродинамически активированных) являются Fomitopsis pinicola и Ganoderma lucidum. Базидиальные грибы проявляют различную ростовую реакцию на предварительную гидродинамическую активацию березовых опилок (ускорение роста / замедление / индифферентность). Максимальная дереворазрушающая активность на древесине Abies sibirica отмечена для грибов Armillaria borealis, Ganoderma tsugae, G. lucidum, F. pinicola и Porodaedalea niemelaei: убыль массы субстрата составила 8–11%; сумма полисахаридов уменьшилась в 1.4 раза преимущественно за счет ферментолиза трудногидролизуемых полисахаридов. Высокие показатели ферментативной активности грибов отмечены при твердофазном и глубинном культивировании с индуктором. Максимальная активность фенолоксидазы характерна для G. tsugae (1.2 ед/г·с); карбоксиметилцеллюлазы – для штаммов F.pinicola и G. lucidum (11.8 и 10.3 ед/мл); ксиланазы – для H. abietinum (3.8 ед/мл). По совокупности показателей экспресс-тестов, количественного определения ферментативной активности, ростовых параметров на лигноцеллюлозных субстратах и степени биоконверсии древесины наиболее перспективным продуцентом лигнолитических ферментов в условиях in vitro является штамм Gl4-16A G. lucidum; целлюлолитических ферментов – штамм Fp6-17 F. pinicola.
The results of a study of the wood-destroying properties of Siberian strains of xylotrophic basidiomycetes (Armillaria, Ganoderma, Fomitopsis, Heterobasidion and Porodaedalea) are presented. The growth parameters and enzymatic activity of the strains were determined during solid-phase and deep cultivation. Fomitopsis pinicola and Ganoderma lucidum are fast-growing fungi on cellulose-, tannin-containing nutrient media, coniferous and deciduous plant substrates (source and hydrodynamically activated). The growth coefficient on media with tannin and Na-carboxymethyl cellulose is more than 45; on plant substrates - more than 30. The strains exhibit a different growth reaction to the preliminary activation of birch sawdust (growth acceleration / growth slowdown / indifference). The maximum wood-destroying activity on wood of A. sibirica noted for the fungi A. borealis, G. tsugae, G. lucidum, F. pinicola, and P. niemelaei. The decrease in substrate mass was 8-11%; the amount of polysaccharides decreased on average 1.4 times mainly due to the fermentolysis of hard-hydrolyzable polysaccharides. High enzymatic activity of fungi observed during solid-phase and deep cultivation with an inducer. The maximum activity of phenol oxidase is characteristic of G. tsugae (1.21 units/g·s); carboxymethyl cellulase - for F.pinicola and G. lucidum strains (11.8 and 10.3 units/ml, respectively); xylanases - for H. abietinum (3.8 u/ml). The maximum accumulation of extracellular protein observed in F. pinicola (0.89 mg/ml). According to the totality of rapid test indicators, quantitative determination of enzymatic activity, growth parameters on lignocellulosic substrates and the degree of wood bioconversion, the most promising producer of lignolytic enzymes in vitro is the Gl4-16A Ganoderma lucidum strain; cellulolytic enzymes - strain Fp6-17 Fomitopsis pinicola.

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Держатели документа:
Institute of Forest Named After V.N. Sukachev, SB, RAS, FRC, KSC, SB, RAS, Akademgorodok, 50/28, Krasnoyarsk, 660036, Russian Federation
Siberian State University of Science and Technology Named After Academician M.F. Reshetneva, pr. Mira, 82, Krasnoyarsk, 660049, Russian Federation
Krasnoyarsk Scientific Center, SB, RAS, Akademgorodok, 50, Krasnoyarsk, 660036, Russian Federation
Institute of Physics L.V. Kirensky, SB, RAS, Akademgorodok, 50/43, Krasnoyarsk, 660036, Russian Federation

Доп.точки доступа:
Литовка, Ю. А.; Павлов, И. Н.; Маколова, П. В.; Тимофеев, А. А.; Литвинова, Е. А.; Васильева, А. А.; Шабанов, Александр Васильевич; Shabanov, A. V.
}
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Biodegradation of microbial plastic poly(3-hydroxybutyrate) in soil ecosystems at different latitudes / S. V. Prudnikova, E. G. Kiselev, A. V. Demidenko [et al.] // Giant. - 2024. - Vol. 18. - Ст. 100288, DOI 10.1016/j.giant.2024.100288. - Cited References: 96. - The study was funded by State Assignment of the Ministry of Science and Higher Education of the Russian Federation (project No. FWES-2021-0025) . - ISSN 2666-5425
Кл.слова (ненормированные):
Poly(3-hydroxybutyrate) -- Degradability -- Red soil -- Chernozem -- Climatic conditions -- Soil microorganisms
Аннотация: The features of the degradation of the "green" plastic poly(3-hydroxybutyrate) [P(3HB)] in the soil of various geographical regions were studied: in red ferralitic soil under tropical conditions (Kerala, India) and in chernozem soil under conditions of a sharply continental climate (Eastern Siberia, Russia). Significant differences in the chemical composition, temperature, and humidity of the studied soils were revealed. The number of bacteria and mycelial fungi in the Siberian chernozem was higher than in the red soil of India, from 2-3 to 10 or more times. The degradation of P(3HB) films in the chernozem occurred faster than in the red soil, which was drier, with a low content of humus and minerals, and fewer microorganisms than the chernozem. The half-life of polymer samples in Siberia and India was 64.8 and 126.4 days, respectively. During degradation, a decrease in the molecular weight and an increase in the degree of crystallinity of polymer samples were revealed, which indicates a more active biodegradation of the amorphous phase of the polymer by soil microorganisms. The primary degraders of the polymer have been isolated and identified, and it has been shown that the complexes of degrading bacteria and fungi in different types of soils did not have common species. Despite the presence of species with pronounced depolymerase activity, the rate of film degradation in red ferralitic soils was slowed down by unfavorable environmental conditions. The obtained results confirm the importance of studying the process of PHA degradation in natural conditions.

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Держатели документа:
Siberian Federal University, 79 Svobodny pr, Krasnoyarsk 660041, Russia
Institute of Biophysics SB RAS, Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50/50 Akademgorodok, Krasnoyarsk 660036, Russia
Federal Research Center “Krasnoyarsk Science Center SB RAS”, 50 Akademgorodok, Krasnoyarsk 660036, Russia
L.V. Kirensky Institute of Physics, 50/12 Akademgorodok, Krasnoyarsk 660036, Russia
International and Interuniversity Centre for Nano Science and Nano Technology, Mahatma Gandhi University, Kottayam 686560, India

Доп.точки доступа:
Prudnikova, S. V.; Kiselev, E. G.; Demidenko, A. V.; Nemtsev, I. V.; Немцев, Иван Васильевич; Shishatskaya, E. I.; Thomas, S.; Volova, T. G.
}
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