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    • 4. 发明公开
    • Concentrated tea extract
    • Konzentrierter Tee-Extrakt。
    • EP0267660A2
    • 1988-05-18
    • EP87202201.7
    • 1987-11-12
    • UNILEVER N.V.UNILEVER PLC
    • Hoogstad, Bruin
    • A23F3/18A23F3/22
    • A23F3/22A23F3/18
    • The present invention relates to a process for the preparation of a concentrated tea extract comprising the steps of:

      (a) extracting tea-leaves with water having a temperature between 15 and 50°C and separating the first extract from the tea-leaves;
      (b) extracting tea-leaves which have previously been extracted with water between 15 and 50°C for a second time, with water having a temperature of more than 50°C and separating the second extract from the tea-leaves;
      (c) concentrating said first extract to obtain a first concentrate;
      (d) concentrating said second extract to obtain a second concentrate; and
      (e) combining said first and second concentrate,
      wherein said first extract is concentrated by subjecting it to reverse osmosis at a temperature between 20 and 50°C and said second extract is concentrated between 50 and 100°C.
    • 本发明涉及一种浓缩茶提取物的制备方法,包括以下步骤:(a)用温度为15-50℃的水萃取茶叶,并将第一提取物与茶叶分离; (b)提取先前在15-50℃的水中第二次用温度高于50℃的水提取茶叶,并从茶叶中分离第二提取物; (c)浓缩所述第一提取物以获得第一浓缩物; (d)浓缩所述第二提取物以获得第二浓缩物; 和(e)组合所述第一和第二浓缩物,其中所述第一提取物通过在20至50℃的温度下进行反渗透浓缩,并且所述第二提取物浓缩在50和100℃之间。