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Highly efficient microbial lipid synthesis from co-fermentation of enzymatic hydrolysate of sugarcane bagasse by a Trichosporon dermatis mutant

文献类型： 外文期刊

作者： Sun, Fubao 1 ; Gu, Zhe 1 ; Zhou, Qiuli 1 ; Sun, Haiyan 3 ; Luo, Jiancheng 2 ; Liu, Zhongmei 1 ; Guo, Shuxian 2 ; Ren, Hon 1 ;

作者机构： 1.Jiangnan Univ, Sch Biotechnol, Key Lab Ind Biotechnol, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

2.Nanyang Inst Technol, Sch Biol & Chem Engn, Henan Key Lab Ind Microbial Resources & Fermentat, Nanyang 473004, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China

4.Jiangnan Univ, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Jiangsu, Peoples R China

5.Queensland Univ Technol, Fac Sci, Ctr Agr & Bioecon, Brisbane, Qld 4000, Australia

6.Queensland Univ Technol, Fac Engn, Sch Mech Med & Proc Engn, Brisbane, Qld 4000, Australia

7.Queensland Univ Technol, Fac Sci, Sch Biol & Environm Sci, Brisbane, Qld 4000, Australia

关键词： Microbial lipid; Trichosporon dermatis; Mutation; Xylose; Fed-batch; Lignocellulose

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2021 年 171 卷

页码：

收录情况： SCI

摘要： In this study, an oleaginous yeast Trichosporon dermatis was mutated by a sequential plasma and chemical mutagenesis approach. The best mutant (L7) was investigated to produce lipid from enzymatic hydrolysates derived from pretreated sugarcane bagasse at different scales and cultivation modes. The results showed that in shake flasks, L7 produced 26.7 g/L cell mass with 14.0 g/L lipid from the hydrolysate medium containing 80 g/L glucose/xylose (mass ratio of 2:1) in batch mode, and 34.9 g/L cell mass with 20.2 g/L lipid from the medium containing a total of 120 g/L glucose/xylose (2:1) in fed-batch mode, respectively. In a 5 L fermenter, L7 produced 33.3 g/L cell mass with 18.1 g/L lipid in batch mode and 51.5 g/L cell mass with 31.3 g/L lipid in fed batch mode, respectively. This study demonstrates that L7 is highly efficient T. dermatis strain to produce lipid using glucose and xylose mixture derived from lignocellulose.

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