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茶叶科学 ›› 2003, Vol. 23 ›› Issue (s1): 63-67.doi: 10.13305/j.cnki.jts.2003.s1.012

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茶浓缩汁加工关键技术与装备的研究

权启爱1, 杨钟鸣1, 尹军峰1, 孙成1, 李虓2, 金寿珍1, 刘新1, 丁志1, 王际春2   

  1. 1. 中国农业科学院茶叶研究所,浙江 杭州 310008;
    2. 中国农业机械化科学研究院,北京 100083
  • 出版日期:2003-12-25 发布日期:2019-09-16
  • 作者简介:权启爱(1940— ),男,江苏铜山人,研究员,主要从事茶叶加工工程方面的研究。

Study on The Key Technique of Tea Juice Concentrating And Its Processing Equipments

QUAN Qi-ai1, YANG Zhong-ming1, YING Jun-feng1, SUN Cheng1, LI Hu2, JIN Shou-zhen1, LIU Xin1, DING Zhi1, WANG Ji-chun2   

  1. 1. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;
    2. Chinese Academy of Agro-mechanization, Beijing 100083, China
  • Online:2003-12-25 Published:2019-09-16

摘要: 对茶浓缩汁加工参数的研究结果表明,茶汁完成提取后,先行粗滤和细滤,然后应用超滤膜将茶汁中的大分子物质分离和去除,再用反渗透膜进行循环浓缩,可获得优质的茶浓缩汁产品。超滤膜孔径,绿茶、乌龙茶以8~10万分子量为宜,红茶则以10万分子量以上为好,超滤膜的工作压力为0.2~0.3βMPa,茶汁温度40℃以下为宜。反渗透膜的工作压力为1.5~3.0βMPa、工作温度控制在50℃以下为好。以此为基础专门设计的茶浓缩汁生产线,生产率可达100βkg/h(年产500吨),茶浓缩汁浓度可达20%(Brix),并且透光率高,易于溶解,能保持茶叶风味,并可去除中、下档茶苦涩味重等部分不足,品质明显优于传统热浓缩产品。

关键词: 茶, 浓缩汁, 超滤, 反渗透

Abstract: Research results on parameters of tea juice concentrating showed that, after tea was extracted, the bulk filtration and fine filtration were carried out, then the macro molecule substances were separated and removed by using ultra-filtrating membrane method, then cycling concentrated by reverse-osmosis membrane, the high quality concentrated tea juice was obtained. The pore diameter of the ultra-filtration membrane is 8×104—10×104 molecule weight for green tea and Oolong tea, and larger than 10×104 for black tea. The working pressure of ultra-filtration membrane is 0.2~0.3βMPa, suitable temperature for tea juice is lower than 40℃. The working pressure of reverse-osmosis membrane is 1.5~3.0βMPa, suitable temperature for tea juice is lower than 50℃. The tea juice productivity of the producing line designed on the base of above technique is 100βkg/h, with concentration of tea juice 20% (Brix) and better quality compared with that of traditional product.

Key words: Tea, Concentrated juice, Ultra-filtration, Reverse-osmosis membrane

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