BioChem - DOS

Simultaneous utilization of glucose and mannose from spent yeast cell mass for lipid production by Lipomyces starkeyi

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

Yang, X.; Jin, G.; Gong, Z.; Shen, H.; Song, Y.; Bai, F.; Zhao, Z.K.

With ever-increasing culture of yeasts for the production of biofuels and other metabolites, spent yeast cell mass exceeds its traditional market demands. Yeast cell mass contains glucose, mannose and other sugars that may be utilized for microbial culture. Here we demonstrated that the oleaginous yeast Lipomyces starkeyi could utilize glucose and mannose simultaneously for lipid production. Overall substrate consumption rates and lipid coefficients were 0.58g/L/h and 0.18g lipid/g sugar, respectively, in flask cultures regardless of glucose, mannose or a mixture of both as the carbon source. L. starkeyi grew well on the hydrolysates of spent cell mass of Rhodosporidium toruloides, consumed both glucose and mannose therein, and produced lipid at a yield of 0.12g lipid/g total reducing sugars. This co-utilization strategy expands carbon sources for lipid production. It should provide an opportunity for recycling spent cell mass and be of significant interests to biorefinery and biofuel production.

2014

Elsevier Applied Science

0960-8524

158

pp.383-387

10.1016/j.biortech.2014.02.121

http://click.ndsl.kr/servlet/OpenAPIDetailView?keyValue=05787966&target=NART&cn=NART69345054

Spent yeast cell mass; Mannose; Microbial lipids; Oleaginous yeast; Lipomyces starkeyi