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2011•Unpublished venueRequires access

Antioxidant activity of fruits of Herba Leonuri

Shen Ye, Xin Sun, Lv Gang, Li Tan

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Abstract

The antioxidant activities of extracts and residuum of Herba Leonuri fruits from supercritical CO2extraction 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.

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What this paper is about

The antioxidant activities of extracts and residuum of Herba Leonuri fruits from supercritical CO2extraction 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.

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Available abstract

The antioxidant activities of extracts and residuum of Herba Leonuri fruits from supercritical CO2extraction 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.

Key concepts: Antioxidant, DPPH, Ethyl acetate, Chemistry, Scavenging, Linoleic acid, Extraction (chemistry), Supercritical fluid

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