Direct conversion of inulin into cell lipid by an inulinase-producing yeast Rhodosporidium toruloides 2F5

作者：Wang Zhi Peng; Fu Wen Juan; Xu Hong Mei; Chi Zhen Ming^*

来源：Bioresource Technology, 2014, 161: 131-136.

DOI：10.1016/j.biortech.2014.03.038

• Single cell oil
• Biodiesel
• Inulin
• Rhodosporidium toruloides
• Fermentation

In this study, an inulinase-producing yeast strain 2F5 of Rhodosporidium toruloides was obtained. It was found that the yeast strain 2F5 could produce higher amount of oil from inulin and larger lipid bodies in its cells than any other yeast strains tested in this study. Under the optimal conditions, 62.14% (w/w) of lipid based on cell dry weight and 15.82 g/l of the dry cell mass were produced from 6.0% (w/v) inulin at flask level, leaving 0.92%(w/v) of total sugar in the fermented medium. During 2-l fermentation, 70.36% (w/w) of lipid based on cell dry weight and 15.64 g/l of the dry cell mass were produced from 6.0% (w/v) inulin. Over 99.09% of the fatty acids from the yeast strain 2F5 grown on inulin was C-16:0, C-18:0, C-18:1 and C-18:2, especially C-18:1 (52.2%). The biodiesel prepared using the lipids produced by the yeast strain 2F5 could be burnt well.

• 出版日期2014-6
• 单位中国海洋大学; UNESCO