PRODUCTION AND CHARACTERIZATION OF POLYHYDROXYALKANOATES OBTAINED BY FERMENTATION OF CRUDE GLYCERIN FROM BIODIESEL

被引：14

作者：

Figueiredo, Tamiris V. B. ^{[1
]}

Campos, Marcio I. ^{[2
]}

Sousa, Luciane S. ^{[1
]}

da Silva, Jaff R. ^{[1
]}

Druzian, Janice I. ^{[1
]}

机构：

[1] Univ Fed Bahia, Fac Farm, Dept Anal Bromatol, BR-40171970 Salvador, BA, Brazil

[2] Univ Fed Bahia, Escola Politecn, Dept Engn Quim, BR-40210630 Salvador, BA, Brazil

来源：

QUIMICA NOVA | 2014年 / 37卷 / 07期

关键词：

polyhydroxyalkanoates; Cupriavidus necator; fermentation; crude glycerin; biodiesel; POLY(3-HYDROXYBUTYRATE) PRODUCTION; BACTERIAL POLYHYDROXYALKANOATES; CUPRIAVIDUS-NECATOR; PHB; OPTIMIZATION; POLY(BETA-HYDROXYALKANOATES); GROWTH; WASTE; ACID;

D O I：

10.5935/0100-4042.20140183

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The aim of this study was to evaluate the production of polyhydroxyalkanoates (PHAs) by fermentation of Crude Glycerin, a byproduct of the biodiesel industry, by Cupriavidus necator IPT 026, 027 and 028. The influence of fermentation time and temperature in shake flasks were evaluated. The highest PHA production (2.82 g L-1) occurred at 35 degrees C for 72 h of fermentation. The melting and initial thermal degradation temperatures of this PHA were 177.9 degrees C and 306.33 degrees C, respectively, with 55% crystallinity. FTIR spectrum was similar to those reported in literature. The polymer obtained presented three different methyl esters of hydroxyalkanoates in its composition, with molecular weight of 630 kDa. Bacteria can use Crude Glycerin as an inexpensive substrate to produce value-added biodegradable products, such as PHA.

引用

页码：1111 / 1117

页数：7

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