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Extraction of water-soluble polysaccharide and the antioxidant activity from Ginkgo biloba leaves

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Abstract

Water-soluble polysaccharide was isolated from Ginkgo biloba leaves with the method of water-dissolving and ethanol-precipitating. The optimized condition for polysaccharide by orthogonal experiment was water to sample as 30:1 (v/w), at 80°C for 3.5 h. Under the condition the finally dried extract was 9.025%, and the content of polysaccharide was 20.9% in the extract and 1.887% in the leaves. The antioxidant activities of the extract were investigated. The scavenging rates of the present extract on hydroxyl, DPPH, and superoxide radicals were 64.05, 17.62, and 11.8%, at polysaccharide concentrations of 4.18, 8.36, and 4.18 μg/ml, whereas with vitamin C at similar concentrations with polysaccharide, the scavenging rates were 9.15, 5.76, and 5.72%, respectively.

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Authors and Affiliations

  1. Life Science College, Dalian Nationalities University, Dalian, 116600, Liaoning, People’s Republic of China

    Bo Jiang, Hongyan Zhang, Changjian Liu, Yanying Wang & Shengdi Fan

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  1. Bo Jiang
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  2. Hongyan Zhang
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  3. Changjian Liu
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  4. Yanying Wang
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  5. Shengdi Fan
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Correspondence to Bo Jiang.

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Jiang, B., Zhang, H., Liu, C. et al. Extraction of water-soluble polysaccharide and the antioxidant activity from Ginkgo biloba leaves. Med Chem Res 19, 262–270 (2010). https://doi.org/10.1007/s00044-009-9189-5

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  • DOI: https://doi.org/10.1007/s00044-009-9189-5

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