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.

中文翻译：

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鱼粉废水作为潜在的低成本培养基的应用，通过 Lipomyces starkeyiHL 生产脂质

由于鱼粉废水（FW）有机物含量高、盐度高，本文首次将其作为生产微生物脂质的新型介质。FW在不添加任何添加剂的情况下发酵表明该肉汤适合于Lipomyces starkeyi HL菌株的生长；然而，含有 20.8% 脂质的 5.34 gl-1 生物质的产量并不令人满意。为了促进脂质的积累和细胞的生长，FW补充了不同浓度的葡萄糖；同时，研究了初始pH的影响。FW 的生物量和脂质产量受葡萄糖浓度和初始 pH 值的显着影响。在初始 pH 值 4.0 下添加 20 gl-1 葡萄糖获得了最佳结果：17.6 gl-1 生物质，2.7 gl-1 脂质产量，91.2% 的蛋白质去除率和 43.4% 的化学需氧量去除率。