The study on the extraction technique of the pumpkin polysaccharide

The extraction technological parameters of polyphenols from Shanbei pumpkin were studied.The extraction conditions of pumpkin polysaccharide were discussed by the single factor experiment.The results indicated that the optimum extraction conditions by hot water were:the extraction temperature was 65 ℃,the extraction time was 2 h,the ratio of solid to extraction solution was 1 ∶40,in this way,the extraction rate was 43.21 mg/g.While the optimum extraction conditions by alkaline water were:the extraction temperature was 60 ℃,the extraction time was 2 h,the ratio of solid to extraction solution was 1 ∶50,and the pH was 13,as a result,the extraction rate was 57.72 mg/g.The processes are simple,safe and have no pollution.