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投稿时间：2020-11-11
投稿时间：2020-11-11
中文摘要: 采用超声辅助提取法对线叶金雀花色素的最佳提取工艺进行研究，包括超声时间、乙醇浓度、提取温度、料液比对线叶金雀花色素吸光度值的影响。在得到最佳提取范围的基础上利用Design-expert软件，进行响应面优化设计。结果显示，在提取温度为60℃时，线叶金雀花色素的最佳提取条件为超声提取时间40 min、乙醇浓度50%、料液比1∶40（g/mL）。在此最佳条件下测得线叶金雀花色素的吸光度值为0.824，与理论预测值0.836相近。
Abstract:The main purpose of this study was to explore the pigment extraction possibilities from rooibos using ultrasound-assisted extraction.Four factors[ethanol concentration，ultrasonication time，temperature and the material-to-liquid ratio（g/mL）]were studied using the pigment as an indicator.Based on the optimum extraction range，the response surface model was designed by using the Design-Expert software.At an extraction temperature of 60 ℃，the optimum extraction conditions were as follows：ultrasonic extraction time 40 min，ethanol concentration 50%，and the material-to-liquid ratio 1∶40（g/mL）.Under the optimum conditions，the pigment absorbance was 0.824，which was close to the theoretical prediction value of 0.836.
文章编号：202118008 中图分类号： 文献标志码：
基金项目:国家自然科学基金（51602029）；苏州市科技计划项目（SNG2020056）；常熟理工学院大学生实践创新训练计划项目（XJDC2020198）
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