Production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller's grains  

作　　者：李新社 陆步诗 唐伟 

机构地区：[1]Department of Biology and Chemistry Engineering,Shaoyang University

出　　处：《Journal of Central South University》2011年第5期1738-1743,共6页中南大学学报（英文版）

基　　金：Project(10A110) supported by Hunan Provincial Education Department of China;Project(2010JT4055) supported by Hunan Provincial Science & Technology Department of China

摘　　要：Abstract： Daqu distiller＇s grains were co-fermented as raw materials by Trichoderma.koningii and Trichosporon cutaneum to produce microbial oils, which can provide raw materials for bio-diesel development. The single factor tests were used to investigate the effects of ratio of strains, inoculum size, culture temperature and culture time on the production of microbial oils. The best processing conditions were obtained by orthogonal test through measuring the content of microbial oils in product. The result shows that the microbial oils content of the co-fermented product under the ratio of Trichoderma.koningii to Trichosporon cutaneum of 1：1, the inoculum size of strains of 11% at 28 ℃ for 6 d is 7.15 g/L. It is shown that the production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller＇s grains is possible. The research provides a new idea for the reuse of Daqu distiller＇s grains and also provides a new way for the development of microbial oils.Daqu distiller's grains were co-fermented as raw materials by Trichoderma.koningii and Trichosporon cutaneum to produce microbial oils,which can provide raw materials for bio-diesel development.The single factor tests were used to investigate the effects of ratio of strains,inoculum size,culture temperature and culture time on the production of microbial oils.The best processing conditions were obtained by orthogonal test through measuring the content of microbial oils in product.The result shows that the microbial oils content of the co-fermented product under the ratio of Trichoderma.koningii to Trichosporon cutaneum of 1:1,the inoculum size of strains of 11% at 28 °C for 6 d is 7.15 g/L.It is shown that the production of microbial oils co-fermented by Trichoderma.koningii and Trichosporon cutaneum with Daqu distiller's grains is possible.The research provides a new idea for the reuse of Daqu distiller's grains and also provides a new way for the development of microbial oils.

关 键 词：Daqu distiller＇s grains Trichoderma.koningii Trichosporon cutaneum CO-FERMENTATION microbial oils 

分 类 号：TE667[石油与天然气工程—油气加工工程]