响应面优化超声波辅助提取甘草精油工艺研究

摘要

Glycyrrhiza is both of medicine and food resources,and the essential oils of glycyrrhiza are extensively applied in the condiment.In this paper,the ultrasonic-assisted extraction process of essential oils from glycyrrhiza is optimized by single factor and response surface experiment.The experimental results show that the optimum extraction conditions of essential oils from glycyrrhiza by steam distillation extraction is determined as follows:ultrasonic power is 270 W,time is 6 h,and concentration of glycyrrhiza solution is 5%.Under such experimental conditions,the yield of essential oils extracted from glycyrrhiza is 0.209%.The extraction time and concentration of glycyrrhiza solution affect the yield of essential oils significantly.%甘草为药食两用资源，甘草提取物甘草精油在调味品中有重要的应用价值。采用单因素及响应面实验设计优化了甘草精油提取条件。实验结果表明：用水蒸气蒸馏法提取甘草精油的最佳条件为超声波功率270 W、提取时间6 h、甘草溶液浓度5％。在该实验条件下，甘草精油提取率为0．209％。提取时间、甘草溶液浓度对甘草精油提取率影响显著。