食品工业科技2017，Vol.38Issue(21)：110-113,4.DOI:10.13386/j.issn1002-0306.2017.21.023
甜菜碱对单针藻Monoraphidium sp.QLY-1油脂积累的影响
Effects of glycine betaine on lipid accumulation of Monoraphidium sp.QLY-1
摘要
Abstract
For promoting biomass and lipid production in Monoraphidium sp.QLY-1,this study investigated that the effects of glycine betaine (GB)on the growth and lipid accumulation in QLY-1 in combination with a two-step strategy,which was called heterotrophic and photoinduction cultivation.Results showed that the biomass concentration of heterotrophic and autotrophic algal cells were (5.54 ± 0.22)and (0.878 ± 0.12)g/L,respectively,and the heterotrophic ceils was 5.3 folds higher than that of the autotrophic.Moreover,under high light stress,the lipid content (47.37％ ± 2.93％)was enhanced by 0.29 folds (p ＜ 0.05) treated with 5 mmol/L glycine betaine than that of control(36.68％ ± 1.34％).Further studies showed that the neutral lipid content was increased to 12.83％ ± 0.75％ than that of the control,and was no significant influences on the fatty acids composition under 5 mmol/L glycine betaine induction.The results indicated that glycine betaine could significantly increase the production of lipid in microalgae,combination of glycine betaine and two-step cultivation could act as another strategy for promoting the lipid accumulation in microalgae.关键词
Monoraphidium sp.QLY-1/油脂产率/油脂含量/甜菜碱/两阶段培养Key words
Monoraphidium sp.QLY-1/lipid productivity/lipid content/glycine betaine/two-step strategy分类
轻工纺织引用本文复制引用
李大菲,赵永腾,赵鹏,徐军伟,李涛,余旭亚..甜菜碱对单针藻Monoraphidium sp.QLY-1油脂积累的影响[J].食品工业科技,2017,38(21):110-113,4.基金项目
国家自然科学基金资助项目(21266013). （21266013）
