食品科学 ›› 2012, Vol. 33 ›› Issue (4): 47-51.doi: 10.7506/spkx1002-6630-201204010

• 工艺技术 • 上一篇    下一篇

绿茶饮料的低温萃取工艺研究及冷后浑控制

陈 洁,刘张虎,杨登想,郭啸川,李 皓,倪学文   

  1. 1.湖北工业大学生物工程学院 2.湖北大学知行学院生物工程系
  • 出版日期:2012-02-25 发布日期:2012-02-14

Low-Temperature Extraction of Green Tea and Its Effect on Cream Down

CHEN Jie,LIU Zhang-hu,YANG Deng-xiang,GUO Xiao-chuan,LI Hao,NI Xue-wen   

  1. 1. College of Biological Engineering, Hubei University of Technology, Wuhan 430068, China; 2. Department of Bioengineering, College of Zhixing, Hubei University, Wuhan 430011, China
  • Online:2012-02-25 Published:2012-02-14

摘要: 研究低温萃取工艺对绿茶主要呈味物质浸出率的影响,并通过T640和A420指标评析茶汤的色泽和浑浊度。结果显示:低温浸提条件下得到的绿茶茶汤主要生化成分的浸出量适宜,同时低温萃取法得到的茶汤色泽佳。采用低温萃取工艺是优质茶饮料生产的有效浸提方法之一。通过正交试验分析,绿茶低温萃取的最佳工艺条件为浸提温度20℃、浸提时间3h、茶水比1:50。

关键词: 绿茶饮料, 低温萃取, 冷后浑, 呈味物质

Abstract: The present study was undertaken to provide insight into the effects of low-temperature extraction conditions on the extraction of major biochemical components from green tea. T640 (transmittance at 640 nm) and A420 (absorbance at 420 nm) were determined as measures of the color and turbidity of tea infusion, respectively. The results showed that appropriate amounts of major biochemical components were extracted from green tea by low-temperature extraction and the color of green tea infusion was good. Low-temperature extraction could provide an effective strategy to extract tea for the production of premium tea beverage. The results of orthogonal array optimization indicated that the optimal low-temperature extraction conditions were extraction for 3 h at 20 ℃ and a tea/water ratio of 1:50.

Key words: green tea beverage, low-temperature extraction, cream down, taste components

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