已为您找到该学者12条结果 成果回收站
【期刊论文】Hymeniacidon perleve Associated Bioactive Bacterium Pseudomonas sp. NJ6-3-1*
严小军, Li Zheng, Xiaojun Yan, Jilin Xu, Haimin Chen, and Wei Lin
Applied Biochemistry and Microbiology, Vol. 41, No.1, 2005, pp. 29-33.,-0001,():
-1年11月30日
Among marine bacteria isolated from the cytotoxic sponge Hymeniacidon perleve, one strain NJ6-3-1 classified as Pseudomonas sp. showed both cytotoxic and antimicrobial activities. Fatty acid analysis indicated that the bacterial strain consists mainly of C16:1, C16:0, C18:1, C18:0, C15:0, C14:0. One unusual 9, 10-cyclopropane-C17:0 fatty acid and C26:0 also constitute major components, as well as the existence of squalene, the precursor of triterpenoids. The major metabolites in the culture broth were identified as alkaloids, including diketopiperazines and indole compounds, namely 3,6-diisopropylpiperazine-2,5-dione, 3-benzyl-3-isopropylpiperazine-2,5-dione, 3,6-bis-(2-methylpropyl)-piperazine-2,5-dione, indole-3-carboxaldehyde, indole-3-carboxylic acid methyl ester, indole-3-ethanol, and quinazoline-2,4-dione.
-
50浏览
-
0点赞
-
0收藏
-
0分享
-
122下载
-
0
-
引用
【期刊论文】Determination of chemical species of iodine in some seaweeds (I)
严小军, Xiaolin Hou a, *, Chifang Chai a, Qinfang Qian a, Xiaojun Yan b, Xiao Fan b
The Science of the Total Environment 204(1997)215-221,-0001,():
-1年11月30日
The chemical species of iodine in seven marine algae Codium fragile, Ulva pertusa, Monostroma nitidum, Gracilaria confervoides, Sargassum Kjellmanianum, Dictyopteris divaricata and Laminaria japonica were studied using neutron activation analysis combined with chemical separation. The contents of total iodine, water-soluble iodine, soluble organic iodine, I- and 103 were determined. The results indicate that the chemical species and contents of iodine in various algae are remarkably different. The highest iodine content of 734 mg/kg (wet basis) was found in Laminaria japonica, with 99.2% of the total iodine being water soluble. The iodine contents of the other six algae are. lower and soluble iodine makes up 16-41% of the total. In the aqueous leachate, iodine is mainly I-, which amounts to 61-93% of total water-soluble iodine; the percentages of organic iodine making up 5.5-37.4%, while the contents of IO3- are the lowest, 1.4-4.5%. This result suggests that the mechanism of iodine enrichment is different for various algae and that its bioavailability varies as well.
Marine algae, Iodine, Chemical species, Neutron activation analysis, Bioavailability
-
55浏览
-
0点赞
-
0收藏
-
0分享
-
61下载
-
0
-
引用