The antioxidative components from Alpinia nutans
Mohamed, Habsah and Lajis, Md. Nordin and Ali, Abdul Manaf and Md. Sukari, Mohd Aspollah and Yap, Taufiq Yun Hin and Kikuzaki, Hiroe and Nakatani, Nobuji (2003) The antioxidative components from Alpinia nutans. Pharmaceutical Biology, 41 (1). pp. 7-9. ISSN 1388-0209; ESSN: 1744-5116
Official URL: http://dx.doi.org/10.1076/phbi.220.127.116.1103
The methylene chloride extract of Alpinia nutans was investigated for its antioxidant constituents. 5,6-Dehydrokawain (1), flavokawin-B (2), 1,7-diphenyl-5-hydroxy-6-hepten-3-one (3), (-)-pinocembrin (4) and a mixture of stigmasterol and β-sitosterol were isolated. The antioxidant activity was measured on isolates 1-4 using ferric thiocyanate (FTC) and diphenylpicrylhydrazyl (DPPH) free radical scavenging techniques.
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