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Antioxidant activity of fruits of Herba Leonuri

机译:益母草果实的抗氧化活性

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摘要

The antioxidant activities of extracts and residuum of Herba Leonuri fruits from supercritical CO2 extraction were determined in vitro. The residuum was extracted in turn with water, propyl alcohol and ethyl acetate. The antioxidant activities of the extracts were assayed with antioxidant capacity in linoleic acid model system, reducing powers, radical scavenging activity using 1, 1-diphenyl-2-picrylhy-drazyl (DPPH) method. The results show that the ethyl acetate extract of Herba Leonuri possesses strongest DPPH radical scavenging activity and reducing power in a concentration-dependent manner.
机译:测定了超临界CO 2 提取物的益母草提取物和残渣的抗氧化活性。残渣依次用水,丙醇和乙酸乙酯萃取。用亚油酸模型体系中的抗氧化能力,1,1-二苯基-2-吡啶-2-吡唑基(DPPH)法测定了其提取物的抗氧化能力,还原能力,自由基清除活性。结果表明,益母草的乙酸乙酯提取物具有最强的DPPH自由基清除活性,且其还原能力呈浓度依赖性。

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