Microbial degradation of polyhydroxyalkanoates in tropical soils

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, 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, 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.

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Издание

Журнал: INTERNATIONAL BIODETERIORATION & BIODEGRADATION

Выпуск журнала: Vol. 83

Номера страниц: 77-84

ISSN журнала: 09648305

Место издания: OXFORD

Издатель: ELSEVIER SCI LTD

Авторы

  • Boyandin A.N. (Institute of Biophysics of Siberian Branch,Russian Academy of Sciences)
  • Prudnikova S.V. (Siberian Federal University)
  • Karpov V.A. (A.N. Severtsov Institute of Ecology and Evolution,Russian Academy of Sciences)
  • Ivonin V.N. (The Joint Russian-Vietnam Tropical Research and Test Center)
  • Dỗ N.L. (The Joint Russian-Vietnam Tropical Research and Test Center)
  • Nguyễn Thi Hoài (The Joint Russian-Vietnam Tropical Research and Test Center, Hanoi, Viet Nam)
  • Lê Thi Mỹ Hiêp (The Joint Russian-Vietnam Tropical Research and Test Center, Hanoi, Viet Nam)
  • Filichev N.L. (The Joint Russian-Vietnam Tropical Research and Test Center)
  • Levin A.L. (The Joint Russian-Vietnam Tropical Research and Test Center)
  • Filipenko M.L. (Inst. of Chemical Biology and Fundamental Medicine,Siberian Branch of Russian Academy of Sciences)
  • Volova T.G. (Siberian Federal University)
  • Gitelson I.I. (Institute of Biophysics of Siberian Branch,Russian Academy of Sciences)

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