| EFFECT OF LIGHT INTENSITY ON THE TOTAL LIPID AND FATTY ACID COMPOSITION OF SIX STRAINS OF MARINE DIATOMS |
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| 作者姓名： | 梁英 麦康森 孙世春 于道展 |
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| 作者单位： | TheKeyLaboratoryofMariculture,MinistryofEducation,OceanUniversityofQingdao,Qingdao266003,China |
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| 基金项目： | ProjectsupportedbytheHi Tech“863”programsoftheChinaMinistryofScienceandTechnology (863 81 9 0 2 0 1 ) |
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| 摘 要： | The effect of light intensity ( 1500 Ix and 5000 Ix) on the total lipid and fatty acid composition of six strains of marine diatoms Cylindrotheca fusiformis (B211 ), Phaeodactylum tricornutum (Bl14, Bl18 and B221) Nitzschia closterium (B222) and Chaetoceros gracilis (B13) was investigated.The total lipids of B13, Bl14, and B211 grown at 5000 Ix were lower than those grown at 1500 Ix. No evident changes were observed in Bl18, B221 and B222. Fatty acid composition changed considerably at different light intensity although no consistent correlation between the relative proportion of a single FA and light intensity. The major fatty acids of the 6 strains were 14:0, 16:0, 16:l(n- 7) and 20:5(n-3) . Cylindrothecafusiformis had high percentage of 20:4n - 6 (9.2 - 10.9% ) . The total polyunsaturated fatty acid /rl all 6 strains decreased with increasing light intensity. The percentage of the highly unsaturated fatty acid eicosapentaenoic acid (EPA) decreased with increasing light intensity in all strains except Chaetoceros gracilis.
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| 关 键 词： | 硅藻 海产 总脂肪含量 脂肪酸 光强度 微藻 |
| 收稿时间： | 3 December 1999 |
| 修稿时间： | 12 July 2000 |
Effect of light intensity on the total lipid and fatty acid composition of six strains of marine diatoms |
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| Liang Ying,Mai Kang-sen,Sun Shi-chun,Yu Dao-zhan.EFFECT OF LIGHT INTENSITY ON THE TOTAL LIPID AND FATTY ACID COMPOSITION OF SIX STRAINS OF MARINE DIATOMS[J].Chinese Journal of Oceanology and Limnology,2001,19(3):249-254. |
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| Authors: | Liang Ying Mai Kang-sen Sun Shi-chun Yu Dao-zhan |
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| Institution: | (1) The Key Laboratory of Mariculture, Ministry of Education, Ocean University of Qingdao, 266003 Qingdao, China |
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| Abstract: | The effect of light intensity (1500 lx and 5000 lx) on the total lipid and fatty acid composition of six strains of marine diatoms Cylindrotheca fusiformis (B211), Phaeodactylum tricornutum (B114, B118 and B221) Nitzschia closterium (B222) and Chaetoceros gracilis (B13) was investigated. The total lipids of B13, B114, and B211 grown at 5000 lx were lower than those grown at 1500 lx. No evident changes were observed in B118, B221 and B222. Fatty acid composition changed considerably at different light intensity although no consistent correlation between the relative proportion of a single FA and light intensity. The major fatty acids of the 6 strains were 14:0, 16:0, 16:1(n-7) and 20:5(n-3). Cylindrotheca fusiformis had high percentage of 20:4n-6 (9.2-10.9%). The total polyunsaturated fatty acid in all 6 strains decreased with increasing light intensity. The percentage of the highly unsaturated fatty acid eicosapentaenoic acid (EPA) decreased with increasing light intensity in all strains except Chaetoceros gracilis. |
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| Keywords: | diatom light intensity total lipid fatty acid composition |
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