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    標題: Inhibitory effects of water extract from longan twigs on mutation and nitric oxide production
    作者: Wang, Bor-Sen
    Tang, Chi-Hua
    Chiu, Chih-Kwang
    Huang, Ming-Hsing
    貢獻者: 化妝品應用與管理系
    生活應用與保健系
    食品科技系
    關鍵字: Longan Twigs
    Mutation
    Nitric Oxide
    Tyrosinase
    日期: 2012-11-15
    上傳時間: 2014-03-21 16:12:27 (UTC+8)
    出版者: Elsevier Sci Ltd
    摘要: This study examines the inhibitory effects of water extract from longan twigs (WLTs) on mutation and nitric oxide (NO) production. The results show that WLT inhibited the mutagenicity of 2-aminoanthracene (2-AA), an indirect mutagen, and 4-nitroquinoline-N-oxide (4-NQO), a direct mutagen toward Salmonella typhimurium TA 98 and TA 100. In addition, WLT in the range 0-0.6 mg/ml showed radical scavenging, reducing activities and chelating activity, as well as decreased lipid oxidative damage. Meanwhile, WLT also inhibited tyrosinase activity and NO generation in lipopolysaccharide (LPS) stimulated macrophages. High performance liquid chromatography analysis suggests that the major phenolic constituents in WLT are epicatechin, ellagic acid and gallic acid. These bioactive components may contribute to the protective effects of WLT. Our data suggests that WLT can be applied to antimutation, anti-inflammation and antityrosinase. (C) 2012 Elsevier Ltd. All rights reserved.
    關聯: Food Chemistry, 135(2), 440-445
    顯示於類別:[化妝品應用與管理系(所)] 期刊論文
    [生活保健科技系] 期刊論文
    [ 食品科技系 ] 期刊論文

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