Mechanical properties and biodegradation characteristics of PHB-based films

被引：134

作者：

Savenkova, L

Gercberga, Z

Nikolaeva, V

Dzene, A

Bibers, I

Kalnin, M

机构：

[1] Latvian Univ, Inst Microbiol & Biotechnol, LV-1586 Riga, Latvia

[2] Latvian State Univ, Fac Biol, LV-1586 Riga, Latvia

[3] Riga Tech Univ, LV-1048 Riga, Latvia

来源：

PROCESS BIOCHEMISTRY | 2000年 / 35卷 / 06期

关键词：

Azotobacter chroococcum; biodegradation; plasticizer; poly-beta-hydroxybutyrate;

D O I：

10.1016/S0032-9592(99)00107-7

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

An effect of plasticizers on physical properties and biodegradation characteristics of polyhydroxybutyrate (PHB) based films have been investigated. Laprol was a good plasticizer for PHB and for PHB containing biomass (BM) of Azotobacter chroococcum 23. A maximum plasticizing effect was attained with a LAP concentration up to 30% w/w. The biodegradation rate of PHB and BM films significantly decreased with an increase in laprol concentration. The dominant PHB-degrading soil microorganisms isolated from the tested PHB-based films have been identified. The dominant genera among bacteria were Pseudomonas, Azotobacter, Bacillus, and Streptomyces and among fungi - Penicillium, Cephalosporium, Paecilomyces, and Trichoderma. An effect of the PHB-based film composition on the quantitative changes of main microorganism groups in soil prior and post film incubation was determined. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：573 / 579

页数：7

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