Isolation and characterization of Aurantiochytrium species high docosahexaenoic acid (DHA) production by the newly isolated microalga | |
Mang Gao; Xiaojin Song; Yingang Feng; Wenli Li; Qiu Cui | |
2013 | |
发表期刊 | Journal of Oleo Science |
卷号 | 62期号:3页码:143–151 |
摘要 | Abstract: A heterotrophic microalga, strain SD116, with the ability to produce high concentrations of docosahexaenoic acid (DHA, C22:6n-3) was isolated from Shuidong Bay, Guangdong Province, China. Nucleotide sequence analysis of the 18S rDNA of SD116 showed that the strain has a close phylogenetic relationship to Aurantiochytrium species. The highest rates for growth and DHA accumulation for SD116 were obtained in 6.0% glucose, 2.0% yeast extract, and 50% artificial seawater (ASW) at a pH of 7 at 28℃. The maximum total lipid content reached 56.3% of the dry cell weight (DCW), and the maximum DHA content accounted for 50.9% of the total fatty acid (TFA) content. It was further found that urea may be a potential nitrogen source for industrial ermentation because of its cheap price and ability to induce a relatively high biomass and lipid production capacity. Using 5 L fermenters, the DCW, total lipid content, and DHA yield were found to be 70.43 g L-1, 71.09% of the DCW, and 17.42 g L-1 (34.79% of the TFA), respectively. The results show that Aurantiochytrium sp. SD116 is a promising candidate for commercial DHA production and could be useful for the synthesis of biomass-related products. |
关键词 | Aurantiochytrium Sp Biomass Docosahexaenoic Acid Heterotrophic Marine Algae Lipid |
学科领域 | 代谢物组学 |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qibebt.ac.cn/handle/337004/1460 |
专题 | 代谢物组学研究组 |
推荐引用方式 GB/T 7714 | Mang Gao,Xiaojin Song,Yingang Feng,et al. Isolation and characterization of Aurantiochytrium species high docosahexaenoic acid (DHA) production by the newly isolated microalga[J]. Journal of Oleo Science,2013,62(3):143–151. |
APA | Mang Gao,Xiaojin Song,Yingang Feng,Wenli Li,&Qiu Cui.(2013).Isolation and characterization of Aurantiochytrium species high docosahexaenoic acid (DHA) production by the newly isolated microalga.Journal of Oleo Science,62(3),143–151. |
MLA | Mang Gao,et al."Isolation and characterization of Aurantiochytrium species high docosahexaenoic acid (DHA) production by the newly isolated microalga".Journal of Oleo Science 62.3(2013):143–151. |
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