Detoxification of ammonium to Nannochloropsis oculata and enhancement of lipid production by mixotrophic growth with acetate.
Detoxification of ammonium to Nannochloropsis oculata and enhancement of lipid production by mixotrophic growth with acetate.
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DOI：
10.1016/j.biortech.2016.12.093
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发表时间：
2017-03
影响因子：
11.4
通讯作者：
Weitie Lin;Pengfei Li;Zipeng Liao;Jianfei Luo
中科院分区：
文献类型：
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作者：
Weitie Lin;Pengfei Li;Zipeng Liao;Jianfei Luo
本研究以乙酸盐为碳源，对微藻Nannochloropsis oculata进行了脱氮实验。N. oculata在混合营养条件下在0.5-50 mM铵和16-64 mM乙酸盐上生长。当在1 mM铵和32 mM乙酸盐上混合营养生长时，生物量和脂质产量分别达到543 mg/L和279 mg/L，分别是在硝酸盐上自养生长时产生的水平的1.5倍和9.4倍。这表明乙酸盐的兼养生长可以是提高微藻脂质生产的有用方法。
In this study, the toxicity of ammonium was removed in the microalga Nannochloropsis oculata by using acetate as a carbon source. Algal biomass and lipid production were significantly enhanced whenN. oculatawas grew on 0.5–50 mM of ammonium and 16–64 mM of acetate in mixotrophic conditions. When grown mixotrophically on 1 mM of ammonium and 32 mM of acetate, the biomass and lipid production reached 543 mg/L and 279 mg/L respectively, which were 1.5 and 9.4 times higher than the levels generated when grown autotrophically on nitrate. This suggests that mixotrophic growth with acetate can be a useful method to enhance microalgal lipid production.