Biomass, nutrient uptake and fatty acid composition of Chlamydomonas sp. ICE-L in response to different nitrogen sources

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• 作者：Meiling An ; Yibin Wang ; Fangming Liu ; Xiaoqing Qi ; Zhou Zheng…
• 关键词：Antarctic ice alga ; Chlamydomonas sp. ICE ; L ; nitrogen ; deficiency condition ; nutrient uptake ; polyunsaturated fatty acids (PUFAs)
• 刊名：Acta Oceanologica Sinica
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：36
• 期：2
• 页码：105-110
• 全文大小：
• 刊物主题：Oceanography; Climatology; Ecology; Engineering Fluid Dynamics; Marine & Freshwater Sciences; Environmental Chemistry;
• 出版者：The Chinese Society of Oceanography
• ISSN：1869-1099
• 卷排序：36

文摘

Nitrogen removal from media by microalgae provides the potential benefit of producing lipids for biodiesel and biomass. However, research is limited on algal growth and biomass under different nitrogen sources and provides little insight in terms of biofuel production. We studied the influences of nitrogen sources on cell growth and lipid accumulation of Chlamydomonas sp. ICE-L, one of a promising oil rich micro algal species. Chlamydomonas sp. ICE-L grown in NH₄Cl medium had maximum growth rate. While the highest dry biomass of 0.28 g/L was obtained in media containing NH₄NO₃, the highest lipid content of 0.21 g/g was achieved under nitrogendeficiency condition with a dry biomass of 0.24 g/L. In terms of total polyunsaturated fatty acids (PUFAs) production, NH₄NO₃ and NH₄Cl media performed better than nitrogen-deficiency and KNO₃ media. Furthermore, NH₄NO₃ and NH₄Cl media elucidated better results on C18:3 and C20:5 productions while KNO₃ and -N conditions were better in C16:0, C18:1 and C18:2, comparatively.