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 Найдено в других БД:Каталог книг и продолжающихся изданий библиотеки Института биофизики СО РАН (1)
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Boyandin A.N., Rudnev V.P., Ivonin V.N., Prudnikova S.V., Korobikhina K.I., Filipenko M.L., Volova T.G., Sinskey A.J.
Заглавие : Biodegradation of polyhydroxyalkanoate films in natural environments
Место публикации : Macromolecular Symposia. - 2012. - Vol. 320, Is. 1. - С. 38-42. - ISSN 10221360 (ISSN) , DOI 10.1002/masy.201251004
Ключевые слова (''Своб.индексиров.''): 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.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : 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.
Заглавие : Biodegradation of polyhydroxyalkanoates (PHAs) in the South China Sea and identification of PHA-degrading bacteria
Место публикации : Microbiology. - 2011. - Vol. 80, Is. 2. - С. 252-260. - ISSN 00262617 (ISSN) , DOI 10.1134/S0026261711020184
Ключевые слова (''Своб.индексиров.''): 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.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : 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.
Заглавие : Biodegradation of polyhydroxyalkanoates (PHAs) in tropical coastal waters and identification of PHA-degrading bacteria
Место публикации : Polymer Degradation and Stability. - 2010. - Vol. 95, Is. 12. - С. 2350-2359. - ISSN 01413910 (ISSN) , DOI 10.1016/j.polymdegradstab.2010.08.023
Ключевые слова (''Своб.индексиров.''): 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.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Van D.T., Manukovsky N.S., Gitelson I.I.
Заглавие : Chemiluminescence of mushrooms cultivated in Vietnam
Место публикации : Doklady Biochemistry and Biophysics. - 2013. - Vol. 448, Is. 1. - С. 13-14. - ISSN 16076729 (ISSN) , DOI 10.1134/S1607672913010043
Ключевые слова (''Своб.индексиров.''): agaricales--article--chemistry--growth, development and aging--immunology--luminescence--species difference--viet nam--agaricales--luminescence--species specificity--vietnam
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