Light intensity and N/P nutrient affect the accumulation of lipid and unsaturated fatty acids by Chlorella sp.

被引：19
作者：
Guo, Xiaoyi [1 ]
Su, Gaomin [1 ]
Li, Zheng [1 ]
Chang, Jingyu [1 ]
Zeng, Xianhai [1 ,3 ]
Sun, Yong [1 ]
Lu, Yinghua [2 ,3 ]
Lin, Lu [1 ]
机构：
[1] Xiamen Univ, Coll Energy, Xiamen 361005, Peoples R China
[2] Xiamen Univ, Dept Chem Engn, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China
[3] Xiamen Univ, Key Lab Synthet Biotechnol Xiamen City, Xiamen 361005, Peoples R China
来源：
BIORESOURCE TECHNOLOGY | 2015年 / 191卷
关键词：
Light intensity; Cultivation; Lipid accumulation; Unsaturated fatty acids; ACETYL COA CARBOXYLASE; NITROGEN STARVATION; ISOCHRYSIS-GALBANA; AUTOTROPHIC CULTIVATION; BIODIESEL PRODUCTION; NANNOCHLOROPSIS SP; GREEN MICROALGA; GROWTH; VULGARIS; TEMPERATURE;
D O I：
10.1016/j.biortech.2015.04.014
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
In this study, different light intensities (80, 160, 240 and 320 mu mol/m(2) s) and various mediums including control medium (CM), N/P rich medium (NPM), N rich medium (NM), and P rich medium (PM) were applied for cultivation of Chlorella sp. It was revealed that cultivation of Chlorella sp. in CM under the light intensity of 320 mu mol/m(2) s led to a lipid content up to 30% enhancement, which was higher than the results of other cases. A rather high unsaturated fatty acid (UFA) content of 7.5% and unsaturated fatty acid/total fatty acid (UFA/TFA) ratio of 0.73 were obtained under 320 mu mol/m(2) s in CM, indicating that the CM-320 system was applicable for the generation of UFA. Moreover, Chlorella sp. cultivated in PM under 320 mu mol/m(2) s provided higher TFA content (7.3%), which was appropriate for biofuel production. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：385 / 390
页数：6
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