Glycosaminoglycans from a Sea Snake (Lapemis curtus): Extraction, Structural Characterization and Antioxidant Activity

被引:21
作者
Bai, Mingyue [1 ,2 ]
Han, Wenwei [1 ,2 ]
Zhao, Xia [1 ,2 ,3 ]
Wang, Qingchi [3 ]
Gao, Yanyun [1 ]
Deng, Shiming [4 ]
机构
[1] Ocean Univ Qingdao, Minist Educ, Shandong Prov Key Lab Glycosci & Glycoengn, Key Lab Marine Drugs,Sch Med & Pharm, Qingdao 266003, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Drugs & Bioprod, Qingdao 266237, Peoples R China
[3] Marine Biomed Res Inst Qingdao, Qingdao 266071, Peoples R China
[4] Hainan Univ, Ocean Coll, Haikou 570228, Hainan, Peoples R China
关键词
Lapemis curtus; glycosaminoglycans; chondroitin sulfate; dermatan sulfate; structural characterization; antioxidant activities; CHONDROITIN SULFATES; ACID; OLIGOSACCHARIDES; POLYSACCHARIDES; ANTICOAGULANT; OIL;
D O I
10.3390/md16050170
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Sea snakes have wide application prospects in medicine, health food and other fields. Several novel polysaccharides were successfully obtained from the skin and the meat of a sea snake (Lapemis curtus). The structures of polysaccharides LSP3 and LMP3, which were extracted and purified from Lapemis curtus, were determined to be new and highly heterogenic glycosaminoglycans (GAGs) by means of FT-IR, ESI-MS/MS and NMR. LSP3 is a hybrid dermatan sulfate (DS) and composed of 48% 4-sulfated disaccharides (Di4S), 42% 6-sulfated disaccharides (Di6S) and 5% disulfated disaccharides (Di2,6S), while LMP3 is a hybrid chondroitin sulfate (CS) and composed of 70% Di4S, 20% Di6S, and 8% Di2,6S. More importantly, LSP3 and LMP3 showed a strong scavenging ability of 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals, iron (Fe2+) chelating activity and total antioxidant capacity in vitro, especially LSP3, with high contents of uronic acid and sulfate, which possessed a higher scavenging ability of DPPH radicals than other fractions. These data suggested that the sea snake polysaccharides could be promising candidates for natural antioxidant ingredients.
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页数:14
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