南非林波波省部分药用植物的自由基清除活性。
Radical scavenging activity of selected medicinal plants from Limpopo province of South Africa.
作者信息
Chauke A M, Shai L J, Mphahlele P M, Mogale M A
机构信息
Department of Biomedical Sciences, Faculty of Science, Tshwane University of Technology, Private Bag X680, Pretoria, 0001, South Africa.
出版信息
Afr J Tradit Complement Altern Med. 2012 Apr 2;9(3):426-30. doi: 10.4314/ajtcam.v9i3.19. eCollection 2012.
Plants collected from Limpopo province of South Africa were investigated for their antioxidative potential using the DPPH radical scavenging assay. Acetone extracts of Flueggea virosa had the highest antioxidant activity with an IC₅₀ value of 30 µg/ml, closely matching the ascorbic acid with an IC₅₀ value of 25 µg/ml. The lowest antioxidant readings were observed with extracts of Rhynchosia venulosa (root extract) and Ficus ingens (leaf extract). Acetone extract of Bridelia virosa leaves had the highest phenolic content (156 mg GAE/g extract), while the lowest content was recorded for R. venulosa root extract and leaf extract of F. ingens (8.3 and 17.7 mg GAE/g extract, respectively). There was a linear correlation between antioxidant activity and total phenolic content. Extracts with high phenolic content had low IC₅₀ values, while extracts with low phenolic concentrations had high IC₅₀ values.
利用DPPH自由基清除法对从南非林波波省采集的植物进行了抗氧化潜力研究。白饭树的丙酮提取物具有最高的抗氧化活性，IC₅₀值为30微克/毫升，与IC₅₀值为25微克/毫升的抗坏血酸非常接近。绒毛野扁豆（根提取物）和大果榕（叶提取物）的提取物抗氧化读数最低。白饭树叶片的丙酮提取物酚含量最高（156毫克没食子酸当量/克提取物），而绒毛野扁豆根提取物和大果榕叶提取物的含量最低（分别为8.3和17.7毫克没食子酸当量/克提取物）。抗氧化活性与总酚含量之间存在线性关系。酚含量高的提取物IC₅₀值低，而酚浓度低的提取物IC₅₀值高。
Zotero 插件