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本文对卡德藻在自养、异养和兼养培养条件下的比生长速率、细胞密度、细胞色素组成及脂肪酸组成等方面进行了比较研究。兼养卡德藻的细胞密度大于自养条件和异养条件下细胞密度之和。兼养培养的卡德藻比生长速率是自养的 2倍 ,异养的 1.3倍。兼养和异养生长的对数期较自养的长。光合自养培养卡德藻最适光强为 10 0 0 0 lx,而兼养培养最适光强范围为 10 0 0～ 2 0 0 0 lx。在自养和兼养培养时亚油酸的含量很高 ,自养和兼养状态下分别为 16 .6 %和 17.4 9%。 EPA合成的量较低。异养藻的多不饱和脂肪酸的产量较自养藻和兼养藻要低。兼养藻细胞光合色素组成和含量与自养藻细胞的基本一致 ,但在异养条件下藻细胞色素组成发生明显改变。
In this paper, the specific growth rate, cell density, cytochrome composition and fatty acid composition of the algae in autotrophic, heterotrophic and concurrent culture were compared. The cell density of Cadeum algae is greater than the sum of cell density under autotrophic conditions and heterotrophic conditions. Concurrent culture of card than algae growth rate is 2 times autotrophic, heterotrophic 1.3 times. Andalusia and heterotrophic growth of the logarithmic period longer than the self-support. The optimal light intensity of photosynthetic autotrophic culture was 10 000 lx, while the best range of light intensity was 10 000 ~ 200 lx. The content of linoleic acid was very high in autotrophic and atrophic culture, and it was 16.6% and 17.49% respectively in autotrophic and atrophic state. The amount of EPA synthesized is low. The production of polyunsaturated fatty acids of heterotrophic algae is lower than that of autotrophic algae and tethering algae. The content and composition of photosynthetic pigments in algae cells were basically the same as autotrophic algae cells, but the algal cytochromes changed significantly under heterotrophic conditions.