Study on Optimization of the Extraction Techniques of Polyphenol from Banana Peel Using Response Surface Methodology

[Objective]The extraction techniques of polyphenol from banana peel were optimized by response surface methodology.[Method] Fixed solid-liquid ratio were 1∶10.Ethanol concentration,extraction temperature and time were chosen as the response factors.The extraction rate of polyphenols were chosen as response value,response surface analysis implemented by three factors and three 1evels,mathematical model was established,and the optimum technological conditions were obtained.[Result] The optimum technological conditions of extracting polyphenol from banana peel by response surface methodology were as follows:ethanol concentration were 65.00%,extraction temperature was 83.00 ℃,extraction time was 2.50 h.Under these optimal conditions,the extraction rate of polyphenol from banana peel for twice was 1.77%.[Conclusion] The research provided the scientific basis for the use of banana peel and increased the added value of the banana.