Corn bran bioprocessing: Development of an integrated process for microbial lipids production
Corn bran bioprocessing: Development of an integrated process for microbial lipids production
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DOI：
10.1016/j.biortech.2017.06.065
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发表时间：
2017-11-01
影响因子：
11.4
通讯作者：
Faubion, Jon
中科院分区：
文献类型：
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作者：
Lee, Jung-Eun;Vadlani, Praveen V.;Faubion, Jon
本研究探讨了玉米麸皮作为利用产油酵母Trichosporon oleaginosus ATCC 20509生产微生物脂质的原料的潜力。采用Box-Behnken试验设计，研究了不同的预处理条件（生物质固体负荷、酸负荷和预处理时间）对预处理工艺的影响。在5%固体负荷和1%酸负荷的预处理条件下，玉米麸皮水解液的糖产量最高，为0.53g/g。在发酵过程中使用玉米麸皮水解产物实现产油。此外，还研究了预处理条件对T.采用响应面法（RSM）对产油酵母进行了研究。预处理过程中的生物量的固体负荷显着影响发酵过程中的脂肪积累的T。油质的响应面模型可以为一体化生物转化平台的设计提供有用的信息。(C)2017爱思唯尔有限公司版权所有
This study investigated the potential of corn bran as a feedstock for microbial lipid production using oleaginous yeast, Trichosporon oleaginosus ATCC20509. Different conditions ( solid loading of biomass, acid loading, and pretreatment duration) were applied to optimize pretreatment processes using the Box-Behnken design. The highest sugar yield of 0.53 g/g was obtained from corn bran hydrolysates at a pretreatment condition of 5% solid loading and 1% acid loading for 30 min. Compared with synthetic media, up to 50% higher lipid accumulations in T. oleaginosus were achieved using corn bran hydrolysates during fermentation. Also, the direct effect of pretreatment condition on the lipid accumulation of T. oleaginosus was investigated using response surface methodology (RSM). Solid loading of biomass during the pretreatment process significantly affected the fermentation process for lipid accumulation of T. oleaginosus. The RSM model can provide useful information to design an integrated bioconversion platform. (C) 2017 Elsevier Ltd. All rights reserved.