Antioxidant capacity of extracts and isolated compounds from Stryphnodendron obovatum Benth
作者: Analice Martins Daleffi ZocolerAndréia Cristina Conegero SanchesIngrid AlbrechtJoão Carlos Palazzo de Mello
刊名: Brazilian Journal of Pharmaceutical Sciences, 2009, Vol.45 (3), pp.443-452
来源数据库: Directory of Open Access Journals
DOI: 10.1590/S1984-82502009000300009
关键词: Stryphnodendron obovatumCapacidade antioxidanteTaninos condensadosRadical livre DPPHComplexo fosfomolibdênioStryphnodendron obovatumAntioxidant capacityCondensed tanninsDPPH free radicalPhosphomolybdenum complex
原始语种摘要: The extract from stem bark of Stryphnodendron obovatum Benth. was chromatographed on a Sephadex® LH-20 column, and yielded nine compounds: gallic acid (GA), p-hydroxybenzoic acid (PHB), gallocatechin (GC), epigallocatechin (EPG), 4'-O-methylgallocatechin (MGC), epigallocatechin-(4β→8)-epigallocatechin (EPEP), epigallocatechin-(4β→8)-gallocatechin (EPGC), robinetinidol-(4α→8)-gallocatechin (ROGC) and robinetinidol-(4β→8)-epigallocatechin (ROEP). Evaluation of the antioxidant capacity in vitro by the methods of DPPH free radical (IC50; μg/mL) and reduction of the phosphomolybdenum complex (RAC) gave the following results, respectively: crude extract 4.52 and 0.8242; ethyl-acetate fraction 4.04 and 0.9537; aqueous fraction 5.58 and 0.9275. The crude extract and ethyl-acetate fraction were...
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  • radical 
  • extracts 摘记
  • scavenging 扫气
  • gallocatechin 倍儿茶酸
  • capacity 电容量
  • isolated 隔离
  • antioxidant 抗氧化剂
  • compounds 化合物
  • tannins 鞣酸类
  • acetate 醋酸盐