欢迎访问《农学学报》,

农学学报 ›› 2023, Vol. 13 ›› Issue (12): 53-59.doi: 10.11923/j.issn.2095-4050.cjas2023-0029

• 农业工程 农业机械 生物技术 食品科学 • 上一篇    下一篇

扁形绿茶降苦涩关键工艺优化及品质分析

黄藩1(), 张翔1, 王迎春1, 罗凡1(), 胥亚琼1, 王高熙2   

  1. 1 四川省农业科学院茶叶研究所,成都 610011
    2 四川印象川之味茶叶有限责任公司,四川广元 628105
  • 收稿日期:2023-02-21 修回日期:2023-05-24 出版日期:2023-12-20 发布日期:2023-12-19
  • 通讯作者:
    罗凡,男,1970年出生,四川苍溪人,研究员,博士,主要从事茶树品种选育和茶树栽培研究。通信地址:610011 四川省成都市锦江区静居寺路20号 四川省农业科学院茶叶研究所,Tel:028-84794439,E-mail:
  • 作者简介:

    黄藩,女,1989年出生,山东德州人,助理研究员,硕士,研究方向:茶叶加工与茶树栽培。通信地址:610011 四川省成都市锦江区静居寺路20号 四川省农业科学院茶叶研究所,Tel:028-84504436,E-mail:

  • 基金资助:
    四川省自然科学基金项目“基于广靶代谢组学的红光萎凋对四川白茶滋味品质的影响机制研究”(2023NSFSC1251); 四川省重点研发项目“川茶营养健康评价体系研究与示范”(2020YFN0154-05); 现代农业产业技术体系建设专项资金项目“茶叶产业技术体系”(CARS-19); 四川省市场监督管理局科技计划项目“不同加工工艺对茶叶中滋味物质组成的影响研究”(SCSJ2021012)

Quality Analysis and Optimization of Key Processing Technology to Reduce Bitterness of Flat Green Tea

HUANG Fan1(), ZHANG Xiang1, WANG Yingchun1, LUO Fan1(), XU Yaqiong1, WANG Gaoxi2   

  1. 1 Tea Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610011, Sichuan, China
    2 Sichuan Impression Chuanzhiwei Tea Limited Liability Company, Guangyuan 628105, Sichuan, China
  • Received:2023-02-21 Revised:2023-05-24 Online:2023-12-20 Published:2023-12-19

摘要:

为优化单芽扁形绿茶的杀青、足火(干燥)工艺并降低其苦涩度,以感官审评的滋味得分、茶汤苦涩味和干茶色泽为评价指标进行单因素试验;在此基础上,以感官审评的滋味得分、酚氨比、可溶性糖含量、儿茶素总量以及儿茶素苦涩味指数为评价指标进行正交试验。结果表明:单芽扁形绿茶的杀青最佳工艺参数为:杀青前茶坯含水量74%、杀青温度320℃、杀青时间8 min;足火前茶坯含水量15%、足火温度80℃、足火时间40 min。相比采用传统工艺加工的单芽扁形绿茶,利用优化工艺加工的单芽扁形绿茶感官审评滋味评分提高了4分,酚氨比降低了0.222,可溶性糖含量增加了1.376%,儿茶素总量增加了5.7%,苦涩味指数降低了1.12。该结果为扁形绿茶标准化生产工艺的制定提供理论支撑。

关键词: 扁形绿茶, 苦涩味, 杀青, 足火, 正交试验

Abstract:

In order to optimize the process of pan-fire and second-drying of single-bud flat green tea and reduce its bitterness of taste, a single factor test was carried out with the taste score of sensory quality, bitter taste of tea soup and dry tea color as evaluation indexes. On this basis, orthogonal experiments were carried out with the taste score of sensory evaluation, phenol-ammonia ratio, soluble sugar content, catechin total and catechin astringency index as evaluation indexes. The results showed that the optimum pan-fire conditions were the water content of 74%, pan-fire temperature of 320℃, pan-fire time of 8 min; and the optimum second-drying conditions were the water content of 15%, second-drying temperature of 80℃, second-drying time of 40 min. Compared with single-bud flat green tea processed by traditional technology, the taste score of sensory evaluation of single-bud flat green tea processed by optimized technology increased by 4 points, the phenol-ammonia ratio decreased by 0.222, the soluble sugar content increased by 1.376%, the total catechin increased by 5.7%, and the bitterness index decreased by 1.12. The result provides theoretical support for the formulation of standard technology of flat green tea.

Key words: flat green tea, bitterness, pan-fire, second-drying, orthogonal test