Enriched accumulation and biotransformation of selenium in the edible seaweed Laminaria japonica

doi:10.1021/jf040195k

IOCAS-IR > 实验海洋生物学重点实验室

	Enriched accumulation and biotransformation of selenium in the edible seaweed Laminaria japonica
	Yan, XJ ; Zheng, L ; Chen, HM ; Lin, W ; Zhang, WW ; Yan, XJ, Ningbo Univ, Marine Biotechnol Lab, Post Box 71, Ningbo 315211, Peoples R China
	2004-10-20
发表期刊	JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
ISSN	0021-8561
卷号	52 期号:21 页码:6460-6464
文章类型	Article
摘要	Accumulations of selenium in kelp Laminaria japonica cultured in seawater was achieved by adding selenite (Na2SeO3) with or without N-P (NaNO3 + NaH2PO4) nutrients at different concentrations. Biotransformation of selenium in the kelp was investigated through measuring the selenium of biological samples and different biochemical fractionations. The results showed that the optimal selenite-enrichment concentration is 200 mg L-1, which can allow the kelp to accumulate a total selenium content from 0.51 +/- 0.15 to 26.23 +/- 3.12 mug g(-1) of fresh weight (fw). Selenium composition analysis of kelp (control group) showed that selenium is present as organic selenium, which is up to 86.22% of the total selenium, whereas inorganic selenium is barely 4.85%. When L. japonica was exposed for 56 h in seawater containing 200 mg L-1 Na2SeO3, the organic selenium was 16.70 mug g(-1) of fw (68.23%) and inorganic selenium was 4.71 mug g(-1) of fw (19.26%). The capability of accumulation of selenium was further enhanced by adding N-P nutrients to the selenite-enriched medium. Total selenium is increased to be 33.65 mug g(-1) of fw at optimal concentration of N-P nutrient (150 mg L-1 NaNO3 and 25 mg L-1 NaH2PO4), whereas the inorganic selenium was not increased and remained at 4.597 mug g(-1) of fw (13.36%), and the increased part of selenium was organic selenium. This implied that kelp L. japonica could effectively transform inorganic selenium into organic selenium through metabolism.; Accumulations of selenium in kelp Laminaria japonica cultured in seawater was achieved by adding selenite (Na2SeO3) with or without N-P (NaNO3 + NaH2PO4) nutrients at different concentrations. Biotransformation of selenium in the kelp was investigated through measuring the selenium of biological samples and different biochemical fractionations. The results showed that the optimal selenite-enrichment concentration is 200 mg L-1, which can allow the kelp to accumulate a total selenium content from 0.51 +/- 0.15 to 26.23 +/- 3.12 mug g(-1) of fresh weight (fw). Selenium composition analysis of kelp (control group) showed that selenium is present as organic selenium, which is up to 86.22% of the total selenium, whereas inorganic selenium is barely 4.85%. When L. japonica was exposed for 56 h in seawater containing 200 mg L-1 Na2SeO3, the organic selenium was 16.70 mug g(-1) of fw (68.23%) and inorganic selenium was 4.71 mug g(-1) of fw (19.26%). The capability of accumulation of selenium was further enhanced by adding N-P nutrients to the selenite-enriched medium. Total selenium is increased to be 33.65 mug g(-1) of fw at optimal concentration of N-P nutrient (150 mg L-1 NaNO3 and 25 mg L-1 NaH2PO4), whereas the inorganic selenium was not increased and remained at 4.597 mug g(-1) of fw (13.36%), and the increased part of selenium was organic selenium. This implied that kelp L. japonica could effectively transform inorganic selenium into organic selenium through metabolism.
关键词	Selenium Seaweed Accumulation Biotransformation
学科领域	Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
DOI	10.1021/jf040195k
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000224509400015
引用统计	被引频次：20[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/1703
专题	实验海洋生物学重点实验室
通讯作者	Yan, XJ, Ningbo Univ, Marine Biotechnol Lab, Post Box 71, Ningbo 315211, Peoples R China
作者单位	1.Ningbo Univ, Marine Biotechnol Lab, Ningbo 315211, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Yan, XJ,Zheng, L,Chen, HM,et al. Enriched accumulation and biotransformation of selenium in the edible seaweed Laminaria japonica[J]. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,2004,52(21):6460-6464.
APA	Yan, XJ,Zheng, L,Chen, HM,Lin, W,Zhang, WW,&Yan, XJ, Ningbo Univ, Marine Biotechnol Lab, Post Box 71, Ningbo 315211, Peoples R China.(2004).Enriched accumulation and biotransformation of selenium in the edible seaweed Laminaria japonica.JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY,52(21),6460-6464.
MLA	Yan, XJ,et al."Enriched accumulation and biotransformation of selenium in the edible seaweed Laminaria japonica".JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 52.21(2004):6460-6464.

条目包含的文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
Yan-2004-Enriched ac（110KB）			限制开放	--	浏览