Enhanced gellan gum production by hydrogen peroxide (H2O2) induced oxidative stresses in Sphingomonas paucimobilis

被引：0
|
作者：
Guilan Zhu
Long Sheng
Qunyi Tong
机构：
[1] Hefei Normal University,Department of Life Science
[2] Jiangnan University,School of Food Science and Technology
来源：
Bioprocess and Biosystems Engineering | 2014年 / 37卷
关键词：
Gellan gum; Hydrogen peroxide; Oxidative stresses;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, the effect of H2O2-induced oxidative stress on gellan gum production and cell growth were investigated. Gellan gum production was improved and cell growth was inhibited by H2O2. A multiple H2O2 stresses with different concentrations were developed to optimize gellan gum production. A maximal gellan gum yield (22.52 g/L), which was 35.58 % higher than the control, was observed with 2, 2, 3, 4 mmol/L H2O2 added at 6, 12, 18, 24 h, respectively. Moreover, UDP-glucose pyrophosphorylase activity and glucosyltransferase activity were increased with H2O2 stresses. This new strategy of multiple H2O2-induced oxidative stresses would be further applied to gellan gum production in future study.
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页码：743 / 748
页数：5
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