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Efficient Conversion of Cane Molasses Towards High-Purity Isomaltulose and Cellular Lipid Using an Engineered Yarrowia lipolytica Strain in Fed-Batch Fermentation

文献类型： 外文期刊

作者： Wang, Zhi-Peng 1 ; Wang, Qin-Qing 2 ; Liu, Song 4 ; Liu, Xiao-Fang 1 ; Yu, Xin-Jun 5 ; Jiang, Yun-Lin 2 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Sustainable Dev Polar Fishery, Qingdao 266071, Shandong, Peoples R China

2.Sun Yat Sen Univ, Sch Marine Sci, Guangdong Prov Key Lab Marine Resources & Coastal, Guangzhou 510006, Guangdong, Peoples R China

3.Southern Lab Ocean Sci & Engn Guangdong Zhuhai, Zhuhai 519000, Peoples R China

4.Dev & Reform Bur, West Coast New Area, Qingdao 266000, Shandong, Peoples R China

5.Zhejiang Univ Technol, Coll Biotechnol & Bioengn, Key Lab Bioorgan Synth Zhejiang Prov, Hangzhou 310014, Zhejiang, Peoples R China

关键词： cane molasses; isomaltulose; Yarrowia lipolytica; lipid

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN： 1420-3049

年卷期： 2019 年 24 卷 7 期

页码：

收录情况： SCI

摘要： Cane molasses is one of the main by-products of sugar refineries, which is rich in sucrose. In this work, low-cost cane molasses was introduced as an alternative substrate for isomaltulose production. Using the engineered Yarrowia lipolytica, the isomaltulose production reached the highest (102.6 g L-1) at flask level with pretreated cane molasses of 350 g L-1 and corn steep liquor of 1.0 g L-1. During fed-batch fermentation, the maximal isomaltulose concentration (161.2 g L-1) was achieved with 0.96 g g(-1) yield within 80 h. Simultaneously, monosaccharides were completely depleted, harvesting the high isomaltulose purity (97.4%) and high lipid level (12.2 g L-1). Additionally, the lipids comprised of 94.29% C-16 and C-18 fatty acids, were proved suitable for biodiesel production. Therefore, the bioprocess employed using cane molasses in this study was low-cost and eco-friendly for high-purity isomaltulose production, coupling with valuable lipids.

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