贵州黔陶乡古茶树茶品质研究

本文以贵州省黔陶乡古茶树品种及相同栽培条件的福鼎大白茶品种成年茶树(12年生)秋茶为实验材料,制作绿茶样,测定并分析其茶多酚、氨基酸、咖啡碱等主要品质成分,结合感官审评方法分析其品质特征。结果显示:古茶树茶主要品质成分含量分别为茶多酚占31.45±0.77%、氨基酸占2.98±0.05%、咖啡碱占3.40±0.05%、水浸出物占45.34±0.06%,均高于成年茶树茶。感官审评结果显示,古茶树茶综合评分高于成年茶树茶。综合结果表明:古茶树茶主要品质成分和感官审评得分均高于成年茶树茶,表现出较好的品质。

The quality analysis of ancient tea tree grown in Qiantao town in Guizhou Province

In this paper, green tea made from leaves of an ancient tea variety was compared with that made from autumn leaves of the mature trees ( 12-year old) of another variety called Fuding dabai tea. The trees of Fuding dabai tea were planted in the same environment as the ancient tea plants. The components including tea polyphenols, amino acids and caffeine, together with sensory evaluation, were investigated and analyzed. The results showed that the ancient tea con-tained 31.45±0.77% of tea polyphenols, 2.98±0.05% of amino acid, 3.40±0.05% of caffeine, and 45.34±0.06% of a-queous extract;all are higher than those of Fuding dabai tea. The results of sensory evaluation showed that the compre-hensive score of the ancient tea was higher than that of Fuding dabai tea. Overall, both the main quality components and sensory tasting scores of green tea made from the ancient tea tree were higher than those made from Fuding dabai tea. The ancient tea also tastes better.