Author(s): LI Zhi-ying, ZHI Xin, ZHANG Yan, DONG Jing
Pages: 101-104
Year: 2015 Issue:  14
Journal: Food Research and Development
Keyword:  ultrasonic extraction; aqueous two-phase systems; licorice; flavonoids; orthogonal test;
Abstract: Liquorice as raw material, ultrasonic-ammonium sulfate aqueous two-phase system coupled with ethanol extraction flavonoids of glycyrrhiza powder. By single factor experiment and orthogonal experiment was carried out optimum conditions of licorice flavonoids. Results showed that the use of ultrasound - ammonium sulfate aqueous two-phase system coupled with ethanol extraction and separation of licorice flavonoids best process conditions for: solid-liquid ratio rising 1 : 35; Alcohol water ratio of 0.7 : 1. The quality of the ammonium sulfate concentration of 0.25 g/mL, extracting time 40 mins. In this condition, the licorice flavonoids extraction rate was 1.96%. Extraction efficiency by using double water phase system extraction was higher than that of conventional ultrasonic extraction.