In vitro antioxidant activity of acetylated and benzoylated derivatives of polysaccharide extracted from Ulva pertusa (Chlorophyta).
The antioxidant activity of natural ulvan and its derivatives (acetylated and benzoylated ulvans) in vitro was determined, including scavenging activity against superoxide and hydroxyl radicals, reducing power, and chelating ability. Obvious differences in antioxidant activity between natural ulvan and its derivatives were observed, moreover, the antioxidant activity of acetylated and benzoylated ulvans was stronger than that of natural ulvan.
Qi
Huimin
H
Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, PR China. qihuimin@ms.qdio.ac.cn
Zhang
Quanbin
Q
Zhao
Tingting
T
Hu
Rugui
R
Zhang
Kun
K
Li
Zhien
Z
D000107:Acetylation; D000975:Antioxidants / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004305:Dose-Response Relationship, Drug; D016166:Free Radical Scavengers / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D017665:Hydroxyl Radical / Q000037:antagonists & inhibitors; D066298:In Vitro Techniques; D008969:Molecular Sequence Data; D011134:Polysaccharides / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology*; D013481:Superoxides / Q000037:antagonists & inhibitors; D044445:Ulva / Q000737:chemistry*
D000975:Antioxidants; D016166:Free Radical Scavengers; D011134:Polysaccharides; D013481:Superoxides; D017665:Hydroxyl Radical