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    • 5. 发明授权
    • Enzymatic treatment of black tea leaf
    • 红茶叶的酶法处理
    • US4639375A
    • 1987-01-27
    • US522878
    • 1983-08-12
    • Chee-Hway Tsai
    • Chee-Hway Tsai
    • A23F3/14A23F3/10A23F3/16A23F3/00A23B7/10A23K1/00
    • A23F3/10
    • A process for the enzymatic treatment of black tea leaf is disclosed. In particular, black tea leaf is wetted with water containing tannase and one or more cell-wall-digesting enzymes, such as cellulase, pectinase, papain, or hemicellulase, prior to extraction. The enzyme-moistened tea leaf is incubated in a closed system at room temperature for a few hours. The enzyme-treated tea is then neutralized with a suitable food grade base and the enzymes are inactivated by heating. The resulting treated tea can be extracted and processed in the usual manner or dried for use in tea bags in the usual manner. As a result, a higher yield of tea is obtained and the resulting instant tea has better solubility in cold water than conventional teas. The bag tea products an infusion which does not form haze at cold temperatures.
    • 公开了一种用于酶处理红茶叶的方法。 特别地,在提取前,用含有鞣酸酶和一种或多种细胞壁消化酶(例如纤维素酶,果胶酶,木瓜蛋白酶或半纤维素酶)的水润湿红茶叶。 将酶加湿的茶叶在封闭的系统中在室温下孵育数小时。 然后用合适的食品级碱中和酶处理的茶,通过加热使酶失活。 所得到的处理过的茶可以以常规方式提取和处理,或以常规方式干燥用于茶包。 结果,获得较高的茶产率,所得到的速溶茶在冷水中的溶解度比常规茶具有更好的溶解度。 袋茶产品在寒冷的温度下不会形成雾霾。