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龍眼單寧成份研究

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龍眼單寧成份研究

中文摘要 單寧(Tannin,鞣質),係屬於多酚類物質,基於能和蛋白質結合的性質,常使 單寧 具有如抗發炎,腫瘍,降低 urea nitrogen(BUN),血糖,血壓等多樣性之生理 活性 。台灣資源豐富,水果種類繁多,四季均有,尤其是某些水果類植物中單寧成份 含量 豐富,很值得加以探討與應用。 龍眼(Euphoria longan(Lour.)Steud)為無患子科(Sapindaceae)植物,主產於 兩廣,福建,台灣等地。其葉,根,花,殼,種子均可供藥用,但用在漢方的多 為龍 眼肉,主治虛勞,贏弱,驚悸。為了能提高其它部份之利用價值,我們針對龍眼 中單 寧成份進行研究。 從龍眼中經由各種 chromatography 分離,純化出七種成份,經光譜分析及化學反 應之

證明,分別是:Gallic Acid(I),Corilagin(II),Acetonylgeraniin isomer(

III,IV).Chcbulagic Acid(V),Epicatechin(VI),及 Procyanidin B-2(V

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