title: Application of fishmeal wastewater as a potential low-cost medium for lipid production by Lipomyces starkeyi HL.
abstract: Due to the high organic compounds and high salinity of fishmeal wastewater (FW), it was firstly used as a novel medium to produce microbial lipid in this paper. Fermentation of FW without any additives adding showed that the broth was appropriate for the growth of strain Lipomyces starkeyi HL; however, production of 5.34 g l(-1) of biomass containing 20.8% of lipid was not satisfied. In order to enhance the accumulation of lipid and cell growth, FW was supplemented with various concentrations of glucose; meanwhile, the influence of initial pH was investigated. Biomass and lipid yield on FW were markedly affected by glucose concentration and initial pH. The addition of 20 g l(-1) glucose at initial pH 4.0 got the best results: 17.6 g l(-1) of biomass, 2.7 g l(-1) of lipid yield, 91.2% of protein removal and 43.4% of the chemical oxygen demand removal. The variation of fatty acid composition upon time course in the cellular lipid on FW or a mixture of glucose and FW was further studied.
authors.affiliation: Shandong Provincial Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Jinan, China. huanglihui9986@126.com
authors.forename: Lihui
authors.initials: L
authors.lastname: Huang
authors.forename: Bo
authors.initials: B
authors.lastname: Zhang
authors.forename: Baoyu
authors.initials: B
authors.lastname: Gao
authors.forename: Guopeng
authors.initials: G
authors.lastname: Sun
mesh_terms: D000818:Animals; D049109:Cell Proliferation; D005285:Fermentation; D005396:Fish Products; D005947:Glucose / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007218:Industrial Microbiology; D007220:Industrial Waste; D008055:Lipids / Q000096:biosynthesis* / Q000737:chemistry; D055160:Lipomyces / Q000378:metabolism*; D009930:Organic Chemicals / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism
chemical_list: D007220:Industrial Waste; D008055:Lipids; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; D005947:Glucose