Influences of Culture Temperature on the Growth, Lipid Content and Fatty Acid Composition of Aurantiochytrium sp. Strain mh0186 |
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| Authors: | Yousuke Taoka Naoki Nagano Yuji Okita Hitoshi Izumida Shinichi Sugimoto Masahiro Hayashi |
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| Affiliation: | (1) Laboratory of Marine Bioscience, Faculty of Agriculture, Miyazaki University, 1-1 Gakuenkibanadainishi, Miyazaki 889-2192, Japan;(2) Nippon Suisan Kaisha Ltd., 2-6-2 Otemachi, Chiyoda-ku Tokyo, 100-8686, Japan |
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| Abstract: | The growth, lipid content, and fatty acid composition of Aurantiochytrium sp. strain mh0186 at different temperatures were investigated. Strain mh0186 grew well at 15–30°C, but weakly at 10°C. The biomass at 15–30°C was significantly higher than at 10 and 35°C, and the total lipid at 15–35°C was significantly higher than that at 10°C. The amount of DHA in the total fatty acid was highest at 10°C and decreased in response to temperature increase. The content of DHA (mg/g-dry cell weight) at 15–30°C were significantly higher than those at 35°C and those at 15–25°C were significantly higher than those at 10 and 35°C. The DHA yield at 15–35°C was significantly higher than those at 10 and 35°C. Unsaturation of fatty acid was regulated by temperature and was enhanced in response to temperature decrease. The ratio of DHA to DPA varied at different temperatures. |
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| Keywords: | Aurantiochytrium Thraustochytrids Growth Lipid content Fatty acid composition |
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