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    • 7. 发明授权
    • Processing method for manufacturing black tea and an improved black tea
    • 制造红茶和改良红茶的加工方法
    • US06811799B2
    • 2004-11-02
    • US10625500
    • 2003-07-22
    • Jifu ZhaoThomas J. Slaga
    • Jifu ZhaoThomas J. Slaga
    • A23F300
    • C12Y110/03001A23F3/10
    • Fresh tea leaves or green tea are converted to black tea using tyrosinase oxidation which alters catechines (a group of green tea polyphenols) to theaflavins. Theaflavins are unique black tea polyphenols and a potential anti-sunburn and chemopreventive agents. The oxidation reaction is performed on leaves which contain moisture only in an amount that the oxidation reaction occurs under the conditions of temperature of 20-50° C., air or O2 (0.2 to 2 moles O2/kg dry tea) supply and pH 5.0 to 7.5 at localized sites on and within the tea leaf structure. The moisture is supplied by moistening fresh tea leaves or dry green tea to a limited degree with a proper amount and concentration of monophenol, catechol and polyphenol oxidases, and tyrosinase, or their combinations. Obtained black tea contains much more theaflavins than regular black tea, and is, therefore, a more healthful beverage than that produced through use of conventionally processed black tea.
    • 使用酪氨酸酶氧化将新鲜的茶叶或绿茶转化为红茶,其将茶几(一组绿茶多酚)改变为茶黄素。 茶黄素是独特的红茶多酚和潜在的抗晒伤和化学预防剂。 在温度为20-50℃,空气或O2(0.2〜2摩尔O 2 / kg干茶)供给条件下的氧化反应发生量和pH5.0的条件下,对含有水分的叶子进行氧化反应 到茶叶结构内部和内部的局部位置为7.5。 通过用适量和浓度的苯酚,儿茶酚和多酚氧化酶和酪氨酸酶或它们的组合,在有限程度上润湿新鲜茶叶或干绿茶来供应水分。 获得的红茶比常规红茶含有更多的茶黄素,因此比通过使用常规加工的红茶产生的饮料更健康。
    • 9. 发明授权
    • Processing method for manufacturing black tea and an improved black tea
    • 制造红茶和改良红茶的加工方法
    • US06602527B1
    • 2003-08-05
    • US09721438
    • 2000-11-22
    • Thomas J. SlagaJifu Zhao
    • Thomas J. SlagaJifu Zhao
    • A23F300
    • C12Y110/03001A23F3/10
    • Fresh tea leaves or green tea are converted to black tea using tyrosinase oxidation which alters catechines (a group of green tea polyphenols) to theaflavins. Theaflavins are unique black tea polyphenols and a potential anti-sunburn and chemopreventive agents. The oxidation reaction is performed on leaves which contain moisture only in an amount that the oxidation reaction occurs under the conditions of temperature of 20-50° C., air or O2 (0.2 to 2 moles O2/kg dry tea) supply and pH 5.0 to 7.5 at localized sites on and within the tea leaf structure. The moisture is supplied by moistening fresh tea leaves or dry green tea to a limited degree with a proper amount and concentration of monophenol, catechol and polyphenol oxidases, and tyrosinase, or their combinations. Obtained black tea contains much more theaflavins than regular black tea, and is, therefore, a more healthful beverage than that produced through use of conventionally processed black tea.
    • 使用酪氨酸酶氧化将新鲜的茶叶或绿茶转化为红茶,其将茶几(一组绿茶多酚)改变为茶黄素。 茶黄素是独特的红茶多酚和潜在的抗晒伤和化学预防剂。 在温度为20-50℃,空气或O2(0.2〜2摩尔O 2 / kg干茶)供给条件下的氧化反应发生量和pH5.0的条件下,对含有水分的叶子进行氧化反应 到茶叶结构内部和内部的局部位置为7.5。 通过用适量和浓度的苯酚,儿茶酚和多酚氧化酶和酪氨酸酶或它们的组合,在有限程度上润湿新鲜茶叶或干绿茶来供应水分。 获得的红茶比常规红茶含有更多的茶黄素,因此比通过使用常规加工的红茶产生的饮料更健康。