响应面法优化普洱茶膏的制作工艺

Optimization of Extraction Technology of Pu-erh Tea Paste Using Response Surface Methodology

[目的]为了提高普洱茶茶膏的得率。[方法]在单因素试验的基础上设计响应面方法优化普洱茶的浸提工艺,采用BBD(Box-Be-hnken Design)法对普洱茶的浸提固液比、浸提时间及浸提温度进行了优化试验。[结果]浸提固液比对普洱茶膏得率有显著性影响,最佳的浸提工艺是固液比1∶12.2 g/ml,浸提时间15.6 min,浸提温度为92.5℃,此条件下普洱茶膏的得率达到22.44%。[结论]该研究为普洱茶膏的开发利用提供了一定的理论依据,同时也证明了响应面法对产品加工工艺的优化与改进是非常有效的。

[ Objective ] To improve the yield of Pu-erh tea paste. [ Method ] On the basis of single factor test, the extraction conditions of Pu- erh tea were optimized with response surface methodology, and the conditions of solid-liquid ratio, extraction time and extraction temperature were optimized with BBD （Box-Behnken Design）. [ Result] The solid-liquid ratio had significant impact on the yield of Pu-erh tea, the best extraction conditions were 1：12.2 （g/ml） of solid-liquid ratio, 15.6 min of extraction time, and 92.5 ℃ of extraction temperature, under which the yield of Pu-erh tea paste could reach up to 22.44%. [ Conclusion] The study provided theoretical basis for the development and utilization of Pu-erh tea paste, and also proved the effectiveness of response surface methodology in optimizing and improving the products processing technology.