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学科主题: Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering, Chemical
题名: The accumulation and metabolism of astaxanthin in Scenedesmus obliquus (chlorophyceae)
作者: Qin, Shan1, 2; Liu, Guo-Xiang1; Hu, Zheng-Yu1
通讯作者: Hu, ZY, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: Scenedesmus obliquus ; secondary carotenoids ; accumulation ; metabolism ; astaxanthin ; LC/MS
刊名: PROCESS BIOCHEMISTRY
发表日期: 2008-08-01
DOI: 10.1016/j.procbio.2008.03.010
卷: 43, 期:8, 页:795-802
收录类别: SCI
文章类型: Article
部门归属: [Qin, Shan; Liu, Guo-Xiang; Hu, Zheng-Yu] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China; [Qin, Shan] Chinese Acad Sci, Grad Univ, Beijing 100094, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Technology
资助者: Wuhan Government
类目[WOS]: Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Engineering, Chemical
研究领域[WOS]: Biochemistry & Molecular Biology ; Biotechnology & Applied Microbiology ; Engineering
摘要: The biosynthesis and metabolism of astaxanthin in coenobium alga Scenedesmus obliquus were investigated using a two-stage culture. The first stage was for the analysis of biosynthesis and accumulation of astaxanthin in alga cells which were cultured under induction conditions (incubation at 30 degrees C and illumination of 180 mu mol m(-2) s(-1)) for 48 h. The composition of the secondary carotenoids in algal cells was analyzed and seven ketocarotenoids were identified. The results implied that S. obliquus synthesized astaxanthin from beta-carotene through three possible pathways. In the second stage, the cultures were transferred to normal conditions (incubation at 25 C and illumination of 80 mu mol m(-2) s(-1)) for 72 h. Algal cells accumulated more chlorophyll and biosynthesis of secondary carotenoids terminated, the content of secondary carotenoids decreased from 59.48 to 6.57%. The results inferred that accumulation and metabolism of astaxanthin could be controlled by cultivated conditions which also could lead the mobilization of secondary carotenoids to support the algal cell growth. The results also implied that presumed conversions from astaxanthin to lutein or antheraxanthin could be modulated by culturing conditions. (C) 2008 Published by Elsevier Ltd.
英文摘要: The biosynthesis and metabolism of astaxanthin in coenobium alga Scenedesmus obliquus were investigated using a two-stage culture. The first stage was for the analysis of biosynthesis and accumulation of astaxanthin in alga cells which were cultured under induction conditions (incubation at 30 degrees C and illumination of 180 mu mol m(-2) s(-1)) for 48 h. The composition of the secondary carotenoids in algal cells was analyzed and seven ketocarotenoids were identified. The results implied that S. obliquus synthesized astaxanthin from beta-carotene through three possible pathways. In the second stage, the cultures were transferred to normal conditions (incubation at 25 C and illumination of 80 mu mol m(-2) s(-1)) for 72 h. Algal cells accumulated more chlorophyll and biosynthesis of secondary carotenoids terminated, the content of secondary carotenoids decreased from 59.48 to 6.57%. The results inferred that accumulation and metabolism of astaxanthin could be controlled by cultivated conditions which also could lead the mobilization of secondary carotenoids to support the algal cell growth. The results also implied that presumed conversions from astaxanthin to lutein or antheraxanthin could be modulated by culturing conditions. (C) 2008 Published by Elsevier Ltd.
关键词[WOS]: ALGA HAEMATOCOCCUS-PLUVIALIS ; MICROALGA CHLORELLA-ZOFINGIENSIS ; GREEN-ALGA ; PHAFFIA-RHODOZYMA ; CHLOROCOCCUM SP ; SECONDARY CAROTENOIDS ; HETEROTROPHIC CULTURE ; ENHANCED PRODUCTION ; LIGHT-INTENSITY ; BETA-CAROTENE
语种: 英语
WOS记录号: WOS:000258396700001
ISSN号: 1359-5113
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/8036
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100094, Peoples R China

Recommended Citation:
Qin, Shan; Liu, Guo-Xiang; Hu, Zheng-Yu.The accumulation and metabolism of astaxanthin in Scenedesmus obliquus (chlorophyceae),PROCESS BIOCHEMISTRY,2008,43(8):795-802
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