A novel method: ionic liquid-based ultrasound-assisted extraction of polyphenols from Chinese purple yam
文献类型： 外文期刊
作者： Zhang, Junhong 1 ; Zong, Aizhen 2 ; Xu, Tongcheng 2 ; Zhan, Ping 1 ; Liu, Lina 2 ; Qiu, Bin 2 ; Liu, Wei 2 ; Jia, Min 3 ; Du 1 ;
作者机构： 1.Shihezi Univ, Food Coll, Shihezi, Xinjiang, Peoples R China
2.Shandong Acad Agr Sci, Inst Agrofood Sci & Technol, Key Lab Agr Prod Deep Proc Technol Shandong Prov, Jinan, Shandong, Peoples R China
3.Shandong Acad Agr Sci, In
关键词： Ionic liquid; ultrasound-assisted extraction; polyphenols; purple yam; response surface methodology
期刊名称：NATURAL PRODUCT RESEARCH （ 影响因子：2.861； 五年影响因子：2.572 ）
ISSN： 1478-6419
年卷期： 2018 年 32 卷 7 期
页码：
收录情况： SCI
摘要： Chinese purple yam is famous for therapeutic and nutritional values in lowering blood glucose, blood pressure and even preventing and treating cardiovascular diseases. However, traditional extraction techniques for the functional polyphenolic compounds mostly utilise unfriendly organic solvent and easily cause degradation of polyphenols. In this study, a novel ionic liquid-based ultrasoundassisted extraction (IL-UAE) technique was utilised to obtain polyphenols. The optimal extraction condition included: solid-liquid ratio (0.05 g/mL), ionic liquid concentration (1.05 M), extraction temperature (67 degrees C) and ultrasonic time (37 min). The maximum free radical scavenging activity (86.21%) and total antioxidant activity (2.21 mM) were achieved and matched well with the predicted values, superior to that of the extract from regular ethanol-based UAE. ILUAE could be a rapid and green technique for efficient extraction of polyphenols from purple yam with low solvent consumption and few structural deterioration, exhibiting application potential in food and pharmaceutical industries.
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