标题：Microbial treatment of the monosodium glutamate wastewater by Lipomyces starkeyi to produce microbial lipid
作者：Liu, J.-X.;Yue, Q.-Y.;Gao, B.-Y.;Ma, Z.-H.;Zhang, P.-D.
作者机构：Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong
来源：Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies
关键词：Biomass;Lipid;Lipomyces starkeyi;Microbial treatment;Monosodium glutamate wastewater
摘要：The monosodium glutamate (MSG) wastewater as a medium was treated by Lipomyces starkeyi to produce microbial lipid in the study. The effect of related factors (initial glucose concentration, inoculation concentration, initial culture pH, and cultivation time) on biomass, lipid production and lipid content was discussed, respectively. According to the experiments, the optimal fermentation conditions were determined: addition of 80. g/L glucose, 10% inoculation concentration, initial pH about 5.0, incubation time 96. h. Under this condition, the biomass production reached up to 4.61. g/L, lipid production and lipid content was 1.14. g/L and 24.73%, respectively. Simultaneously, protein and COD removal rate was 78.60% and 74.96%, respectively. The main composition of fatty acid in the resultant lipid was analyzed by gas chromatography-mass spectrometry, which showed: oleic acid (C18:1) 35.85%, palmitic acid (C16:0) 19.91%, palmitoleic acid (C16:1) 17.65%, and myristic acid (C14:0) 16.03%.