响应面法优化超声辅助竹叶鸡爪茶多酚的提取工艺
目的 采用响应面法优化竹叶鸡爪茶多酚的超声提取工艺。 方法 通过超声辅助法提取竹叶鸡爪茶中的总酚, 以总酚含量为评价指标, 考察超声温度、超声功率、超声时间、乙醇浓度、液料比5个因素对总酚含量的影响, 选择4个因素(超声温度、超声时间、乙醇浓度、液料比)设计4因素3水平Box-Behnken响应面试验进行工艺优化。结果 竹叶鸡爪茶多酚的最佳提取工艺为: 超声温度71 ℃、超声时间35 min、液料比42:1 (V:m)、乙醇浓度57%, 此条件下测得的多酚含量(2.33±0.01) mg/g, 与预测值2.37 mg/g接近, 相对误差为1.68%, 表明模型预测值与实际值基本吻合。结论 超声辅助提取法能够有效地提取竹叶鸡爪茶多酚。
Objective To optimize ultrasonic assisted extraction process of polyphenols from Rubus bambusarum Focke by response surface methodology. Methods Total phenol from Rubus bambusarum Focke was extracted by ultrasound-assisted method. Taking the total phenol content as the evaluation index, the effects of ultrasonic temperature, ultrasonic power, ultrasonic time, ethanol concentration and liquid-to-liquid ratio on the total phenol content were investigated. The 4 factors (ultrasound temperature, ultrasonic time, ethanol concentration, liquid to material ratio) were selected to design a 4-factor and 3-level Box-Behnken response surface test for process optimization. Results The optimum extraction conditions were as follows: ultrasonic temperature 71 ℃, ultrasonic time 35 min, ratio of liquid to material 42:1 (V:m), ethanol concentration 57%. Under this condition, the content of polyphenols was (2.33±0.01) mg/g, which was close to the predicted value of (2.33±0.01) mg/g. The predicted value of the model was basically consistent with the actual value. Conclusion Ultrasonic assisted extraction method can effectively extract polyphenols from Rubus bambusarum Focke.
标题：响应面法优化超声辅助竹叶鸡爪茶多酚的提取工艺
英文标题：Optimization of ultrasonic assisted extraction process of polyphenols from Rubus bambusarum Focke by response surface methodology
作者：
王美英 邵阳学院食品与化学工程学院
李化强 邵阳学院食品与化学工程学院
吴菲菲 邵阳学院食品与化学工程学院
刘庆 邵阳学院食品与化学工程学院
彭洁 邵阳学院食品与化学工程学院
胡平 邵阳学院食品与化学工程学院
中文关键词:竹叶鸡爪茶,多酚,超声波辅助提取,响应面,
英文关键词:Rubus bambusarum Focke,polyphenols, ultrasonic assisted extraction,response surface,
发表日期：2019-10-25
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