没食子酸衍生物是茶树酚酸中的主要成分,是茶汤中重要的鲜味增强剂,具有抗过敏、抗抑郁和增强认知能力等作用。利用固相萃取（solid-phase extraction,SPE）结合制备高效液相色谱（preparative high performance liquid chromatography,PHPLC）,从茶树鲜叶中分离制备出高纯度的3-O-没食子酰奎尼酸和β-D-没食子酰葡萄糖,并利用LC/TOF-ESI-MS、1H-NMR和13C-NMR对它们的结构进行了鉴定。该方法操作简单、纯化效果好。
Gallic acid derivatives are the chief compounds of phenolic acid in tea. They are important umami-enhancing compounds in tea beverage, and possess the effects of inhibiting IgE producton, enhancing cognition-anting depressant. A reversed-phase PHPLC coupled with SPE was developed to purify and to prepare high purity 3-O-galloyquinic acid and β-D-glucogalline from fresh tea leaves. The obtained fractions were successfully identified by LC/TOF-ESI-MS, 1H-NMR and 13C-NMR. This method is simple, effective for the preparation of gallic acid derivatives.
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