【摘要】 对英红九号茶树品种六大茶类(绿茶、白茶、黄茶、乌龙茶、红茶和黑茶)的生化成分含量进行分析,并进行体外活性评价。结果表明:英红九号六大茶类中生化成分特点是绿茶的可溶性糖和水浸出含量最高,白茶的各生化成分含量均处于其他茶类之间,黄茶的茶多酚和儿茶素含量最高,乌龙茶的氨基酸含量最高,黄酮和可溶性糖含量最低,红茶的黄酮含量最高,茶多酚、儿茶素、氨基酸和水浸出物的含量最低,黑茶的氨基酸和水浸出物含量较高,茶多酚和儿茶素含量较低,仅稍高于红茶。英红九号六大茶类的体外抗氧化活性表现为绿茶、乌龙茶和黄茶的活性较高,体外抑制α-淀粉酶活性表现为绿茶和乌龙茶的活性较高,体外抑制脂肪酶活性表现为黑茶活性最高,其他茶类活性相差不大。更多还原

【Abstract】 The biochemical components and the activities in vitro of six categories of tea(green tea,withe tea,yellow tea,oolong tea and black tea)made of Yinghong NO.9 were determined. The results showed that the content of soluble sugar and water extract of green tea were the highest. The content of all the chemical components of white tea were between the other kinds of tea. The content of tea polyphenols and catechins of yellow tea were the highest. The content of amino acid of oolong tea were the highest. However,the content of soluble sugar and flavonoid of oolong tea were the lowest. The content of flavonoid of black tea were the highest,while the content of tea polyphenols,catechins,amino acid and water extract were the lowest. The content of amino acid and water extract of dark tea were higher than black tea,while the content of tea polyphenols and catechins were lower than black tea. The antioxidant ability of green tea,oolong tea and yellow tea were stronger than other kinds of tea. The inhibitive activities of α-amylase of green tea and oolong tea were stronger than other kinds of tea. The inhibitive activities of lipase of dark tea was strongest. There was no significant difference in the inhibitive activities of lipase of other kinds of tea.更多还原