Sophorolipids production from rice straw via SO3 micro-thermal explosion by Wickerhamiella domercqiae var. sophorolipid CGMCC 1576

被引：61

作者：

Liu, Xin-ge ^{[1
]}

Ma, Xiao-jing ^{[1
]}

Yao, Ri-sheng ^{[1
]}

Pan, Chun-yu ^{[1
]}

He, Hua-bing ^{[2
]}

机构：

[1] Hefei Univ Technol, Sch Biol & Med Engn, 193 Tunxi Rd, Hefei 230009, Anhui, Peoples R China

[2] Anhui BBCA Chem Equipment Co LTD, Bengbu 233010, Peoples R China

来源：

AMB EXPRESS | 2016年 / 6卷

基金：

国家高技术研究发展计划(863计划); 中国国家自然科学基金; 中国博士后科学基金;

关键词：

Sophorolipid; RSHH; Lac SL/tot SL; Broth pH; Correlation; SURFACE-ACTIVE PROPERTIES; CANDIDA-BOMBICOLA; RAPESEED OIL; BIOSURFACTANT; MOLASSES; LIPIDS; WHEY; PURIFICATION; PRETREATMENT; CELLULOSE;

D O I：

10.1186/s13568-016-0227-7

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

A novel lignocellulose material, holocellulose from rice straw via the pretreatment of SO3 micro-thermal explosion, was developed to produce sophorolipids (SLs) with Wickerhamiella domercqiae var. sophorolipid CGMCC 1576. The influence factors of inoculum dose, yeast extract concentration and pH regulators (chemical regents used for adjusting/influencing pH) was investigated and discussed. Results showed that W. domercqiae can grow in the rice straw holocellulose hydrolysate, and acquire relative high SL yield of 53.70 +/- 2.61 g/L in shake flask culture. Inoculum dose, yeast extract concentration and pH regulator made obvious influence on fermentation parameters, especially on final broth pH and SLs production. Furthermore, there is a strong negative linear correlation existing between final broth pH and lactonic SL or ratio of lac SL/tot SL. Additionally, comparison between SL production and non-glucose carbon sources, culture methods, microbes in previous reports was carried out. These results will be benefit for acquiring SL mixture with suitable lac SL/tot SL ratio for specific purpose and scope economically.

引用

页数：11

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