响应不同 CO2 水平下斜生栅藻和蛋白核小球藻的 CO2 生物固定和脂肪酸组成。
CO2 biofixation and fatty acid composition of Scenedesmus obliquus and Chlorella pyrenoidosa in response to different CO2 levels.
机构信息
School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.
出版信息
Bioresour Technol. 2011 Feb;102(3):3071-6. doi: 10.1016/j.biortech.2010.10.047. Epub 2010 Oct 15.
In this study, Scenedesmus obliquus SJTU-3 and Chlorella pyrenoidosa SJTU-2 were cultivated with 0.03%, 5%, 10%, 20%, 30%, 50% CO(2). The two microalgae could grow at 50% CO(2) (>0.69 g L(-1)) and grew well (>1.22 g L(-1)) under CO(2) concentrations ranging from 5% to 20%. Both of the two examined microalgae showed best growth potential at 10% CO(2). The maximum biomass concentration and CO(2) biofixation rate were 1.84 g L(-1) and 0.288 g L(-1) d(-1) for S. obliquus SJTU-3 and 1.55 g L(-1) and 0.260 g L(-1) d(-1) for C. pyrenoidosa SJTU-2, respectively. The main fatty acid compositions of the two examined microalgae were fatty acids with C(16)-C(18) (>94%) under different CO(2) levels. High CO(2) levels (30-50%) were favorable for the accumulation of total lipids and polyunsaturated fatty acids. The present results suggested that the two microalgae be appropriate for mitigating CO(2) in the flue gases and biodiesel production.
在这项研究中，斜生栅藻 SJTU-3 和蛋白核小球藻 SJTU-2 在 0.03%、5%、10%、20%、30%、50%CO(2)下进行培养。两种微藻在 50%CO(2)(>0.69 g L(-1))下能够生长，在 5%至 20%CO(2)浓度范围内生长良好(>1.22 g L(-1))。两种被检测的微藻在 10%CO(2)下表现出最佳的生长潜力。斜生栅藻 SJTU-3 的最大生物量浓度和 CO(2)生物固定率分别为 1.84 g L(-1)和 0.288 g L(-1) d(-1)，蛋白核小球藻 SJTU-2 的最大生物量浓度和 CO(2)生物固定率分别为 1.55 g L(-1)和 0.260 g L(-1) d(-1)。两种被检测的微藻在不同 CO(2)水平下的主要脂肪酸组成为 C(16)-C(18)脂肪酸(>94%)。高 CO(2)水平(30-50%)有利于总脂和多不饱和脂肪酸的积累。本研究结果表明，这两种微藻适合用于减少烟道气中的 CO(2)和生产生物柴油。
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