Тип публикации: статья из журнала
Год издания: 2013
Идентификатор DOI: 10.1016/j.ibiod.2013.04.014
Ключевые слова: Polyhydroxyalkanoates (PHAs), Biopolymers, Biopolymer properties, Soil biodegradation, PHA degrading microorganisms, 3-hydroxybutyric acid, Degree of crystallinity, Hydroxyalkanoic acids, Microbial characteristics, Microbial degradation, Polyhydroxyalkanoates, Polymer molecular mass, Soil biodegradations, Bacteriology, Biomolecules, Microorganisms, Soils, Tropics, Biodegradation, chemical composition, microbial activity, microbial community, molecular analysis, organic compound, polymer, soil degradation, soil microorganism, tropical soil, Bacillus (bacterium), Bacteria (microorganisms), Burkholderia, Cupriavidus, Gongronella, Mycobacterium, Nocardiopsis, Penicillium, Trichoderma
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.
Журнал: INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Выпуск журнала: Vol. 83
Номера страниц: 77-84
ISSN журнала: 09648305
Место издания: OXFORD
Издатель: ELSEVIER SCI LTD
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