title: Antioxidant activities of extract and fractions from the hypocotyls of the mangrove plant Kandelia candel.
abstract: The antioxidant activities of 70% acetone extract (70% AE) from the hypocotyls of the mangrove plant Kandelia candel and its fractions of petroleum ether (PF), ethyl acetate (EF), water (WF), and the LF (WF fraction further purified through a Sephadex LH-20 column), were investigated by the 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging and ferric reducing/antioxidant power (FRAP) assays. The results showed that all the extract and fractions possessed potent antioxidant activity. There was a significant linear correlation between the total phenolics concentration and the ferric reducing power or free radical scavenging activity of the extract and fractions. Among the extract and fractions, the LF fraction exhibits the best antioxidant performance. The MALDT-TOF MS and HPLC analyses revealed that the phenolic compounds associated with the antioxidant activity of the LF fraction contains a large number of procyanidins and a small amount of prodelphinidins, and the epicatechin is the main extension unit.
authors.affiliation: Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, School of Life Sciences, Xiamen University, Xiamen 361005, China.
authors.forename: Shu-Dong
authors.initials: SD
authors.lastname: Wei
authors.forename: Hai-Chao
authors.initials: HC
authors.lastname: Zhou
authors.forename: Yi-Ming
authors.initials: YM
authors.lastname: Lin
mesh_terms: D000975:Antioxidants / Q000737:chemistry* / Q000494:pharmacology; D018546:Hypocotyl / Q000737:chemistry*; D010936:Plant Extracts / Q000737:chemistry* / Q000494:pharmacology; D043982:Rhizophoraceae / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D010936:Plant Extracts