title: Improvement of antioxidant and moisture-preserving activities of Sargassum horneri polysaccharide enzymatic hydrolyzates.
abstract: In the previous study, we have found that polysaccharides isolated from Sargassum horneri exhibited bioactivities. The aim of this study was to investigate the antioxidant and moisture-preserving activities of molecular weight alteration of Sargassum horneri polysaccharide in vitro. For this purpose, the homogeneous active polysaccharide SHP was isolated from Sargassum horneri, and response surface methodology was employed to optimize the enzymatic degradation conditions to get SHP-derived fragments with different molecular weight. Results proved that the polysaccharide is capable of scavenging both ABTS and DPPH radicals in vitro. The study revealed that the polysaccharides had strong moisture-absorption and -retention capacities as compared to propanediol and glycerin. Furthermore, these data demonstrated that molecular weight had a certain effect on antioxidant activities and strong moisture-retention capacities of the polysaccharide from Sargassum horneri.
authors.affiliation: Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China. Electronic address: pingshao325@163.com.
authors.forename: Ping
authors.initials: P
authors.lastname: Shao
authors.affiliation: Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China.
authors.forename: Xiaoxiao
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Food Science and Technology, Zhejiang University of Technology, Hangzhou, Zhejiang 310014, PR China.
authors.forename: Peilong
authors.initials: P
authors.lastname: Sun
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D002384:Catalysis; D016166:Free Radical Scavengers / Q000737:chemistry / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D008970:Molecular Weight; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D044647:Sargassum / Q000737:chemistry* / Q000378:metabolism; D013696:Temperature
chemical_list: D000975:Antioxidants; D016166:Free Radical Scavengers; D011134:Polysaccharides
keywords: Antioxidant activity; Moisture-preserving activity; Sulfated polysaccharide