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孟霞, 高宏, 孔任秋, 徐旭东. 一株富含α-亚麻酸栅藻的异养培养条件优化[J]. 水生生物学报, 2018, 42(4): 819-823. DOI: 10.7541/2018.100
引用本文: 孟霞, 高宏, 孔任秋, 徐旭东. 一株富含α-亚麻酸栅藻的异养培养条件优化[J]. 水生生物学报, 2018, 42(4): 819-823. DOI: 10.7541/2018.100
MENG Xia, GAO Hong, KONG Ren-Qiu, XU Xu-Dong. OPTIMIZATION OF HETEROTROPHIC GROWTH CONDITIONS FOR A SCENEDESMUS STRAIN WITH HIGH CONTENT OF α-LINOLENIC ACID[J]. ACTA HYDROBIOLOGICA SINICA, 2018, 42(4): 819-823. DOI: 10.7541/2018.100
Citation: MENG Xia, GAO Hong, KONG Ren-Qiu, XU Xu-Dong. OPTIMIZATION OF HETEROTROPHIC GROWTH CONDITIONS FOR A SCENEDESMUS STRAIN WITH HIGH CONTENT OF α-LINOLENIC ACID[J]. ACTA HYDROBIOLOGICA SINICA, 2018, 42(4): 819-823. DOI: 10.7541/2018.100

一株富含α-亚麻酸栅藻的异养培养条件优化

OPTIMIZATION OF HETEROTROPHIC GROWTH CONDITIONS FOR A SCENEDESMUS STRAIN WITH HIGH CONTENT OF α-LINOLENIC ACID

  • 摘要: HSJ296是本实验室分离纯化的1株能够异养生长、富含α-亚麻酸的栅藻(Scenedesmus sp.)。研究比较了不同温度、氮源和葡萄糖浓度对其生长的影响, 结果显示, 其最适培养条件为30℃、4 g/L尿素和20—40 g/L葡萄糖。通过分析不同培养条件下HSJ296总脂中的脂肪酸组成, 发现主要含有十六碳脂肪酸(C16:0)、油酸(C18:1)、亚油酸(C18:2)和α-亚麻酸(α-C18:3), 并且α-亚麻酸的含量稳定在35%—45%。栅藻HSJ296发酵产品或可用作鱼类饲料添加剂以补充α-亚麻酸等营养。

     

    Abstract: HSJ296, a Scenedesmus strain isolated and purified by this lab, can grow heterotrophically in the dark and contains a relatively high amount of α-linolenic acid. Comparisons of heterotrophic growth at different temperatures and concentrations of glucose, or with different nitrogen sources, indicated that the optimal culture conditions included 30℃, 4 g/L urea and 20—40 g/L glucose. As shown with fatty acid composition analyses under different conditions, the fatty acids of HSJ296 were mainly composed of hexadecanoic acid (C16:0), oleic acid (C18:1), linoleic acid (C18:2) and α-linolenic acid (α-C18:3), and the α-linolenic acid content in total lipids was between 35%—45% in independent experiments. The fermentation product of Scenedesmus HSJ296 may be used as a fish dietary supplement to supply α-linolenic acid and other nutrients.

     

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