盐度及其调节方式对眼点拟微球藻的生长和EPA积累的影响

Effects of Salinity and Its Regulation Ways on Growth and EPA Accumulation of Nannochloropsis oculata

摘要:

本文研究了盐度对海产眼点拟微球藻的生长和EPA积累的影响，同时比较了天然海水、粗海盐和NaCl三种物质在调节培养基盐度、影响藻细胞生长和EPA积累方面的作用，结果表明：盐度处于14.5‰33.5‰之间对EPA的含量没有显著影响，但对细胞比生长速率的影响更为显著。藻细胞生长和EPA积累的最适盐度范围在27.0‰29.0‰。用NaCl实现海水中的盐度不能有效促进细胞的生长和EPA积累，而用粗海盐实现海水中的盐度能发挥与海水基本相同的作用。

Abstract:

The effects of salinity and its three regulation ways on cell growth and EPA accumulation of Nannoxhloropsis oculata are investigated in this paper. It is found that 14.5‰~33.5‰ of salinity has little influence on the EPA content of N. oculata, but greatly affects the cell growth. The best range of the salinity for the cell growth and EPA accumulation of N. oculata was determined to be 27.0‰~29.0‰. Besides, similar effects on the cell growth and EPA accumulation are found with the salinities regulated by sea water and sea salt. However, using NaCl to regulate the salinity can not efficiently improve the cell growth and EPA accumulation.