Evaluation of the types of starch for preparation of LDPE/starch blends

被引：10

作者：

Vinhas, Gloria Maria ^{[1
]}

de Lima, Suzana Moreira ^{[1
]}

Santos, Livia Almeida ^{[1
]}

Gomes de Andrade Lima, Maria Alice ^{[1
]}

Bastos de Almeida, Yeda Medeiros ^{[1
]}

机构：

[1] Univ Fed Pernambuco, Dept Engneharia Quim, BR-50740521 Recife, PE, Brazil

来源：

BRAZILIAN ARCHIVES OF BIOLOGY AND TECHNOLOGY | 2007年 / 50卷 / 03期

关键词：

amylolytic enzymes; polyethylene; starch; blends; Talaromyces wortmanii; Phanerochaete crysosporium; LOW-DENSITY POLYETHYLENE; PHANEROCHAETE; BIODEGRADATION; PERFORMANCE; LIGNINASE;

D O I：

10.1590/S1516-89132007000300001

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This study evaluated in relation the growth, and the amylolytic activity of mixed and isolated cultures of Phanerochaete chrysosporium and Talaromyces wortmanni on different types of starch. The thermal and mechanical properties in polyethylene/starch blends (proportion: 80/20 (w/w) before and after inoculation of the mixed cultures were evaluated. The regular starch Amidex 3 and the modified starch Fox5901 stood out in relation to the cellular growth and production of the amylase enzyme. In spite of the short time that the blends were exposed to the fungi, the microorganisms promoted physical and chemical changes in the structure of the blend, modifying its thermal and mechanical properties. The alteration of the degree of crystallinity and mechanical properties of the blends could be indications of the modification caused by the biodegradation process.

引用

页码：361 / 370

页数：10

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