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目的对雪茶进行系统性的生药研究及总氨基酸的含量测定。方法采用基源鉴定、性状鉴别、显微鉴别和薄层色谱鉴别、理化检查方法做系统生药鉴别,用UV法测定雪茶中的总氨基酸。结果确定了雪茶的基源,并规定药材水分不得超过12.0%、8.0%,浸出物中总氨基酸不得少于5.0%、0.03%。结论所用方法可用于雪茶的质量评价。
Objective To study the systematic study of crude drug and the determination of total amino acid content of snow tea. Methods The identification of basic sources, traits identification, microscopic identification and thin layer chromatography identification, physical and chemical tests to identify the system of crude drugs, determination of total amino acids in Xuecha by UV method. The results identified the source of snow tea and stipulated that the medicinal material should not exceed 12.0% and 8.0% of water content, and the total amino acids in the extract should not be less than 5.0% and 0.03%. Conclusion The method can be used for the quality evaluation of tea.