响应面法优化番石榴叶多酚的超声提取工艺

Optimization of ultrasonic extraction of polyphenol from guava leaf using response surface methodology

摘要: 以番石榴叶为原料,研究了多酚物质的超声辅助提取工艺,探讨了各因素对多酚物质提取含量的影响。通过二次响应面法,确定了超声辅助提取番石榴叶多酚物质的最佳提取条件,以1∶30(g/m L)的料液比加入51%的乙醇,在60℃的温度、60 W的超声波功率下提取47 min,多酚物质含量可达143.38 mg/g。

Abstract: Using guava leaf as raw material,extraction of guava leaf polyphenol by ultrasound- assisted method was studied in this paper.The influence of various factors on the extraction efficiency of polyphenol was discussed.With quadratic response surface design,the optimal extracting conditions for ultrasound- assisted extraction were established: 51% alcohol( v / v),the 1∶ 30( g / m L) of material- solution ratio,60 ℃,60 W ultrasonic power for 47 min.Under these conditions,the content of polyphenol reached 143.38 mg / g.