School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Road, Wuhan 430081, PR China.
School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, 947 Heping Road, Wuhan 430081, PR China.
Bioresour Technol. 2016 Nov;219:552-558. doi: 10.1016/j.biortech.2016.08.021. Epub 2016 Aug 10.
In the present study, synergistic effects were observed when glycerol was co-fermented with glucose and xylose for lipid production by the oleaginous yeast Cryptococcus curvatus. Glycerol was assimilated simultaneously with sugars at the beginning of the culture without adaption time. Furthermore, better lipid production results, i.e., lipid yield and lipid productivity of 18.0g/100g and 0.13g/L/h, respectively, were achieved when cells were cultured in blends of corn stover hydrolysates and biodiesel-derived glycerol than those in the hydrolysates alone. The lipid samples had fatty acid compositional profiles similar to those of vegetable oils, suggesting their potential for biodiesel production. This co-utilization strategy provides an extremely simple solution to advance lipid production from both lignocelluloses and biodiesel-derived glycerol in one step.
在本研究中，当利用富含油脂的酵母假丝酵母（Cryptococcus curvatus）发酵甘油、葡萄糖和木糖生产油脂时，观察到了协同效应。在培养的开始阶段，甘油与糖同时被同化，无需适应时间。此外，当细胞在玉米秸秆水解物和生物柴油衍生的甘油混合物中培养时，与单独使用水解物相比，分别获得了更好的油脂生产结果，即油脂得率和油脂生产率分别为 18.0g/100g 和 0.13g/L/h。脂质样品的脂肪酸组成谱与植物油相似，表明它们具有生产生物柴油的潜力。这种共利用策略提供了一种极其简单的解决方案，可以一步法从木质纤维素和生物柴油衍生的甘油中同时生产油脂。
