title: The antioxidant properties of brown seaweed (Sargassum siliquastrum) extracts.
abstract: Antioxidant properties of brown seaweed (Sargassum siliquastrum) extracts were evaluated using various antioxidant measurements, i.e., inhibitory effect on thiobarbituric acid-reactive substances (TBARS), 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging, metal chelating effect, reducing power effect, and total phenolic compounds. When the extraction solvents n-hexane, chloroform, ethanol, and water were compared, the water extract showed the highest yield in extracted mass. Total phenolic compounds were the highest in the ethanol extract, with 127.4 mg/g. The TBARS inhibition of chloroform and ethanol extracts at 10 mg/mL was 90.9% and 80.9%, respectively. DPPH radical scavenging capacity was more than 90% in all extracts at 1 mg/mL. The chloroform extract exhibited the highest metal ion chelating ability of 69.6% at 10 mg/mL. The reducing power was found to be the highest in the ethanol extract at 10 mg/mL, showing an effect similar to ascorbic acid. Thus, the ethanol extract of S. siliquastrum has potential as a natural antioxidant.
authors: Department of Food Science & Technology, Pukyong National University, Busan, Republic of Korea.
authors: Sun-hee
authors: SH
authors: Cho
authors: Se-eun
authors: SE
authors: Kang
authors: Ji-young
authors: JY
authors: Cho
authors: Ah-ram
authors: AR
authors: Kim
authors: Sun-mee
authors: SM
authors: Park
authors: Yong-Ki
authors: YK
authors: Hong
authors: Dong-Hyun
authors: DH
authors: Ahn
mesh_terms: D000975:Antioxidants / Q000032:analysis / Q000302:isolation & purification / Q000494:pharmacology*; D001713:Biphenyl Compounds; D002725:Chloroform; D000431:Ethanol; D006586:Hexanes; D007502:Iron Chelating Agents; D010084:Oxidation-Reduction; D010636:Phenols / Q000032:analysis; D010851:Picrates; D044647:Sargassum / Q000737:chemistry*; D012997:Solvents; D017392:Thiobarbituric Acid Reactive Substances; D014867:Water
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D006586:Hexanes; D007502:Iron Chelating Agents; D010636:Phenols; D010851:Picrates; D012997:Solvents; D017392:Thiobarbituric Acid Reactive Substances; D014867:Water; C026385:n-hexane; D000431:Ethanol; D002725:Chloroform; C004931:1,1-diphenyl-2-picrylhydrazyl