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Oil crop wastes as substrate candidates for enhancing erythritol production by modified Yarrowia lipolytica via one-step solid state fermentation

文献类型： 外文期刊

作者： Liu, Xiaoyan 1 ; Yan, Yubo 1 ; Zhao, Pusu 1 ; Song, Jie 1 ; Yu, Xinjun 3 ; Wang, Zhipeng 4 ; Xia, Jun 1 ; Wang, Xiaoyu 1 ;

作者机构： 1.Huaiyin Normal Univ, Jiangsu Key Lab Biomass Based Energy & Enzyme Tec, Huaian, Peoples R China

2.Huaiyin Normal Univ, Jiangsu Collaborat Innovat Ctr Reg Modern Agr & E, Huaian, Peoples R China

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

4.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Minist Agr & Rural Affairs, Key Lab Sustainable Dev Polar Fishery, Qingdao, Shandong, Peoples R China

关键词： Erythritol production; Oil crop wastes; One-step solid state fermentation; Modified Yarrowia lipolytica; Repeated-batch fermentation; Nitrogen-rich cultivation

期刊名称：BIORESOURCE TECHNOLOGY （ 影响因子：9.642； 五年影响因子：9.237 ）

ISSN： 0960-8524

年卷期： 2019 年 294 卷

页码：

收录情况： SCI

摘要： Oil crop wastes are attractive feedstocks in microbial processes due to their low cost. However, the product yields can be limited by their undesirable nitrogen surplus. Present study proposed a one-step solid state fermentation (SSF) method for producing erythritol from unrefined oil crop wastes using a modified strain Y. lipolytica M53-S. Enhanced erythritol production (185.4 mg/gds) was obtained from peanut press cake mixed with 40% sesame meal and 10% waste cooking oil. The process was performed at pH 4.0 in 5 L flasks, with initial moisture content, NaCl addition, and inoculum size of 70%, 0.02 g/gds, and 7.5 x 10(4) cells/gds, respectively. This procedure showed advantages in terms of lower material cost than that of submerged fermentation and shorter culture cycle (96 h) than other SSF processes. In repeated-batch fermentation, erythritol was continuously produced for seven cycles. This study presents a feasible approach in developing an efficient erythritol cultivation from nitrogen-rich wastes.

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