Structural characterization and hypolipidemic activity of Gracilaria lemaneiformis polysaccharide and its degradation products
文献类型： 外文期刊
作者： Long, Xiaoshan 1 ; Hu, Xiao 2 ; Xiang, Huan 2 ; Chen, Shengjun 2 ; Li, Laihao 2 ; Qi, Bo 2 ; Li, Chunsheng 2 ; Liu, Shucheng 1 ; Yang, Xianqing 2 ;
作者机构： 1.Guangdong Ocean Univ, Guangdong Prov Engn Technol Res Ctr Marine Food, Guangdong Prov Key Lab Aquat Prod Proc & Safety, Guangdong Prov Engn Lab Marine Biol Prod,Coll Foo, Zhanjiang 524088, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Minist Agr & Rural, Key Lab Aquat Prod Proc, Guangzhou 510300, Peoples R China
3.Jiangsu Ocean Univ, Coinnovat Ctr Jiangsu Marine Bioind Technol, Lianyungang 222005, Peoples R China
4.Dalian Polytech Univ, Collaborat Innovat Ctr Seafood Deep Proc, Dalian 116034, Peoples R China
关键词： G. lemaneiformis; Polysaccharide; Structural characterization; Hypolipidemic activity; Pancreatic lipase; Cholesterol esterase
期刊名称：FOOD CHEMISTRY-X （ 影响因子：6.443； 五年影响因子：6.443 ）
ISSN： 2590-1575
年卷期： 2022 年 14 卷
页码：
收录情况： SCI
摘要： This research aimed to analyze structural characterization and hypolipidemic activity in vitro of G. lemaneiformis polysaccharide (GLP) and its degradation products. The results presented that the content of galacturonic acid declined and glucuronic acid level enhanced, average particle size decreased from 99.9 mu m to 25.7 mu m, and color brightness of polysaccharide strengthened after degraded by H2O2-Vc. There was no significant change in thermal stability of polysaccharide before and after degradation. It was observed in AFM analysis, polysaccharide changed to smaller, delicacy and dispersion after degradation. As seen in FT-IR, H2O2-Vc degradation never change the structure of polysaccharide. Polysaccharide and its degradation products showed a significant inhi-bition effect on pancreatic lipase and cholesterol esterase in a dose-dependent manner, which presented the mixed type of competitive and non-competitive for pancreatic lipase, and non-competitive for cholesterol esterase, respectively. The fluorescence quenching type was static on pancreatic lipase and dynamic on cholesterol esterase.
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