Effects of sodium nitrate and sodium acetate concentrations on the growth and fatty acid composition of <Emphasis Type="Italic">Brachiomonas submarina</Emphasis> |
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Authors: | Email author" target="_blank">Yang?XiuxiaEmail author Zeng?Xiaoqi Ji?Yupeng Liu?Qun |
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Institution: | (1) Fisheries College, Ocean University of China, 266003 Qingdao, P. R. China |
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Abstract: | One isolate of Brachiomonas submarina was tested for its ability to grow heterotrophicly on 5 different organic compounds. Sodium acetate and glucose were found
to be effective in supporting the growth. Sodium acetate was chosen as the organic nutrient to test the combined effects of
organic and inorganic solutions on the growth and fatty acid composition of Brachiomonas submarina. The best growth rates were achieved at 3 mmol L−1 CH3COONa and 0.88 mmol L−1 NaNO3 in heterotrophic condition, and 4 mmol L−1 CH3COONa and 3.52 mmol L−1 NaNO3 in mixotrophic condition. The differences between fatty acid contents were significant. The total polyunsaturated fatty acids
(T. P. U. F. As) varied from 55.79% to 67.72% in heteritrophic growth and from 52.39% to 65.55% in mixotrophic growth. It
is concluded that CH3COONa and NaNO3 at 3 mmol L−1 and 3.52 mmol L−1 should respectively be used in order to achieve the highest growth rate and fatty acid content. |
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Keywords: | Brachiomonas submarina Heterotrophy Mixotrophy Growth Fatty acid |
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