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Evaluation of Antioxidant Activities of Alpinia galanga (L.) Willd

机译：Alpinia Galanga（L.）Willd抗氧化活性的评价

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摘要

Present research was designed to evaluate the free radical scavenging capacities and antioxidant activities of rhizome extracts of Alpinia galanga prepared in different solvent systems (60% aqueous methanol, 60% aqueous ethanol and distilled water) using different in vitro chemical assays. Antioxidant components such as total phenolic content (TPC), total flavonoid content (TFC) and ascorbic acid contents of the ginger species were screened. Antioxidant assays employed included sulphur free radical reactivity assay, ferric ion reducing power assay, DPPH free radical scavenging capacity assay, hydroxyl radical scavenging assay nitric oxide scavenging activity assay and hydrogen peroxide scavenging assay. The obtained data reveal that the plant extracts contained significant amount of the observed antioxidant components and also exhibited significant free radical scavenging capacities. Methanol (60%) extract exhibited highest antioxidant activity than other solvents. The polyphenolic constituents ofthe plant extracts appear to be largely responsible for the radical scavenging capacity. 'Die plant extracts act as promising source of antioxidants, and may be useful for development ot nutraceuticals and pharmaceutical drugs.
机译：旨在评估在不同溶剂系统（60％甲醇水溶液，60％乙醇水溶液和蒸馏水）中制备的alpinia Galanga的alpinia galanga的抗氧体提取物的自由基清除能力和抗氧化活性。筛选抗氧化成分，如总酚类含量（TPC），总黄酮含量（TFC）和姜物种的抗坏血酸含量。抗氧化剂测定包括硫自由基反应性测定，铁离子还原功率测定，DPPH自由基清除能力测定，羟基自由基清除测定硝氧化氮清除活性测定和过氧化氢清除测定法。所获得的数据显示，植物提取物包含大量观察到的抗氧化成分，并且还表现出显着的自由基清除能力。甲醇（60％）提取物表现出比其他溶剂的最高抗氧化活性。植物提取物的多酚醛成分似乎在很大程度上对自由基清除能力负责。 '死植物提取物作为抗氧化剂的有前途的来源，可用于开发戒指营养和药物药物。

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