摘要
超声波辅助提取是一种新型高效的提取技术。本实验采用超声波辅助提取的方法,从咖啡渣中初步提取多酚,研究了从咖啡渣中提取多酚的超声波辅助提取优化工艺流程。根据单因素试验优化了提取时间、料液比、乙醇浓度、提取温度和超声波功率对多酚提取率的影响。根据实验结果,最佳工艺条件为超声功率700 W,提取时间20分钟,料液比30mL/g,提取温度40℃。在最佳工艺条件下,多酚的最大产率为53.37 mg/g,比传统溶剂提取产率高11.56%。采用超声波辅助提取技术显著缩短了提取时间,并获得了更高的产率,可成为从咖啡渣中提取多酚类物质的理想提取技术之一。
Ultrasound-assisted extraction（UAE）is a new effective extraction technology.In this study,an effective UAE process of polyphenols from spent coffee residue was developed.Several important extraction parameters such as extraction time,solvent/material ratio,ethanol concentration extraction temperature and ultrasound power were optimized based on single factor experiments.Under optimized parameters,the maximum yield of polyphenols was 53.37 mg/g,which is higher than conventional solvent extraction by 11.56% with much shorter extraction time.The results indicate that UAE technique is an efficient alternative technique for the extraction of polyphenols from spent coffee residue.
作者
吴柯江
Wu Kejiang(School of Chemical Engineering, Sichuan University, Chengdu 610065,Sichuan, China)
出处
《四川化工》
CAS
2018年第3期1-4,共4页
Sichuan Chemical Industry
关键词
咖啡渣
多酚
超声波辅助提取
spent coffee residue
polyphenols
ultrasound-assisted extraction
