连翘叶复合袋泡茶的制备及配方优化

Preparation and formula optimization of Forsythia suspense leaf compoundtea bag

[目的]以药食两用资源连翘叶为主要原料研制一款连翘叶复合袋泡茶。[方法]利用Minitab 17软件通过混料设计进行复配实验,根据所得配比制成茶包,密码审评,强制权重,建立模糊综合评价模型,以感官得分为响应值优化连翘叶复合袋泡茶配方。建立三因素三水平正交试验,以茶汤感官得分、水浸出物含量为指标,优化连翘叶复合袋泡茶冲泡工艺。[结果]连翘叶复合袋泡茶最优配方为连翘叶占比0.30,薄荷占比0.010,大枣占比0.528,绿茶占比0.162。此配方下所得袋泡茶中水浸出物含量66.30%、茶多酚含量20.33%、总黄酮含量2.14%。最佳冲泡工艺为,取水浸出物含量最高,时间15 min,温度90℃,茶水比1 g∶80 mL;取感官最佳,时间10 min,温度100℃,茶水比1 g∶80mL。[结论]由连翘叶、薄荷、大枣、绿茶组成的连翘叶复合袋泡茶冲泡方便,汤色亮黄,清澈明亮,香气纯正,口感协调,日常茶饮利于缓解声带受累、感冒发热、抽烟引起的咽喉肿痛。

[Objective]Forsythia suspense leaves,the dual-use resource for medicine and food,was used as the main raw material to develop a novel compound teabag.[Methods]Minitab17 software was used to design the compound experiments through mixture design,and tea bags were prepared according to the obtained ratio. A fuzzy comprehensive evaluation model was established to optimize the formulation of F. suspense leaf compound teabag with sensory score as response value. A three-factor and three-level orthogonal test was established to optimize brewing technology of compound teabag with sensory score and water extract content as indexes. [Results]The optimal formula of F. suspense leaf compound teabag was 0. 3 for F. suspense leaves,0. 01 for M. haplocalyx Briq,0. 528 for Z. jujuba Mill,and 0. 162 for green tea. Results showed that the contents of water extract,tea polyphenols,and total flavonoids were 66. 30%,20. 33% and 2. 14%,respectively. The best brewing process determined by the highest content of water extract was as follows:the processing time was 15 min with the temperature at 90 ℃ and the tea/water ratio at 1 g/80 mL;while the best for the senses was observed when the processing time was 10 min with the temperature at 100 ℃ and tea/water ratio at 1 g/80 mL. [Conclusion]F. suspense leaf compound teabag was composed of F. suspense leaf,M. haplocalyx Briq,Z. jujuba Mill and green tea,and was easy to brew. The tea soup was bright yellow,clear and bright with pure aroma and harmonious taste. Daily drinking can relieve sore throat caused by vocal cord involvement,cold fever and smoking.