不同类型江西名茶儿茶素含量及体外抗氧化能力比较
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(1. 江西农业大学食品科学与工程学院,江西 南昌 330045;2. 江西省天然产物与功能食品重点实验室,江西 南昌 330045;3. 华南农业大学食品学院,广东 广州 510642)

作者简介:

王学渊,男,江西农业大学在读硕士研究生。

通讯作者:

杨武英(1971—),女,江西农业大学副教授,博士。E-mail:yangwuyi2003@163.com

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国家自然科学基金地区基金项目(编号:31660486)


Comparative study on the catechin content and antioxidant capacity of different types of tea in Jiangxi
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(1. College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang, Jiangxi 330045, China; 2. Jiangxi Key Laboratory of Natural Product and Functional Food, Nanchang, Jiangxi 330045, China; 3. College of Food Science, South China Agricultural University, Guangzhou, Guangdong 510642, China)

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    摘要:

    采用高效液相色谱法测定江西11种名茶中的5种儿茶素(儿茶素、表儿茶素、表没食子儿茶素、表没食子儿茶素没食子酸酯、儿茶素没食子酸酯)含量,并通过测定茶叶样品的DPPH自由基清除能力、铁还原抗氧化能力、ABTS+自由基清除能力和总还原能力4项体外抗氧化指标,比较11种江西名茶的抗氧化能力。研究结果表明:上述茶叶中5种儿茶素含量有较大差异,总儿茶素含量大部分差异不显著,绿茶和白茶总儿茶素和各种儿茶素含量总体比红茶高;各种类型茶叶均表现出明显的抗氧化能力,总体趋势也是绿茶和白茶强于红茶。从抗氧化、防衰老的角度来说,推荐消费者优先选择井岗翠绿、浮瑶仙芝等绿茶,资溪白茶、靖安白茶等白茶。

    Abstract:

    The content of five kinds of catechins in eleven types of famous teas in Jiangxi, including Catechin, L-Epicatechin, (-)-epigallocatechin, Epigallocatechin gallate and (-)-Epicatechin gallate, was determined by high performance liquid chromatogra-phy. Moreover, the antioxidant capacities among the eleven types of tea were compared by measuring vitro antioxidant indexes, i.e. the free radical scavenging ability of DPPH, ABTS+, ferric reducing antioxidant power, and the total reduction ability. The results showed that the content of the five kinds of catechin in the tea was different, the content of total catechin did not differ significantly, and the contents of the total and different kind of catechin in green tea and white tea were higher than those in black tea. All types of tea showed obvious antioxidant capacity, but stronger antioxidant capacities in green tea and white tea were detected than that in black tea. For the antioxidant and anti-aging purpose, Jinggang and other kinds of green tea as well as Zixi and Jingan white tea were suggested.

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王学渊,刘静宜,洪艳平,等.不同类型江西名茶儿茶素含量及体外抗氧化能力比较[J].食品与机械,2019,(6):152-158.
WANGXueyuan, LIUJingyi, HONGYanping, et al. Comparative study on the catechin content and antioxidant capacity of different types of tea in Jiangxi[J]. Food & Machinery,2019,(6):152-158.

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  • 收稿日期:2019-01-05
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  • 在线发布日期: 2022-11-25
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