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投稿时间：2016-12-16
投稿时间：2016-12-16
中文摘要: 采用超微粉碎技术处理玫瑰茄干花萼。选取超声时间、超声温度、超声功率、液料比为自变量，花色苷含量为响应 值，进行响应面优化设计。结果表明：玫瑰茄红色素适宜的提取工艺条件为：超声时间 33.26 min，超声温度 47.23 ℃， 超声功率 57.98 %，液料比 128.73 ∶ 1（mL/g），该试验条件下花色苷含量的预测值为 4.66 mg/g。依据实际试验情况，将 其修正为超声时间 30 min、超声温度 50 ℃，超声功率 60 % 即 120 W、液料比 130 ∶ 1（mL/g），经验证此条件下花色苷 实际提取量为 4.63 mg/g，实际值接近理论预测值，说明响应面法优化玫瑰茄色素提取工艺参数的可行性。超声联合 超微粉碎可以显著提高玫瑰茄红色素的提取率。
Abstract:Roselle dried calyx was treated by ultrafine comminution. Ultrasonic time， temperature， power and the ratio of liquid to material were selected as independent variables. The extraction yield of anthocyanins was selected as response value to conduct the optimization of response surface design. The optimum conditions of ex－ traction obtained by response surface methodology were as followed： ultrasonic time of 33.26 min， ultrasonic temperature at 47.23 ℃， ultrasonic power of 57.98 %， and liquid/material ratio of 128.73 mL/g. Under these conditions， the theoretic anthocyanins yield reached 4.66 mg/g. According to the actual experiments， the opti－ mum theoretic parameters were modified as： ultrasonic time 30 min， ultrasonic temperature 50 ℃， ultrasonic power 60 %， namely 120 W， and liquid/material ratio 130 ∶ 1 （mL/g）， and the actual extraction rate of antho－ cyanins was 4.63 mg/g， which was close to the predicted value. The results showed that the response surface method to optimize the ultrasonic-assisted extraction of roselle pigment was feasible. Ultrasonic and ultrafine comminution had a significant effect on extraction ratio of roselle pigment.
文章编号：201714009 中图分类号： 文献标志码：A
基金项目:福建省高校科技计划重点项目（产学研项目）（2015N5003）
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