Study on Extraction of Pectin from Hibisus essulentus

[Objective] To optimum extraction technique for pectin from Hibisus essulentus.[Method] By using microwave assisted acid hydrolysis for extracting pectin from H.essulentus and with pectin yield as indicator,the optimum extraction technique was obtained through investigating influencing factors of acid types,acid hydrolysis pH,microwave time,solid-liquid ratio.[Result] The extraction ratio of pectin from H.essulentus could reach 13.89% under the conditions of pH 3,microwave time 5 min,solid-liquid ratio Using the extraction ratio as an index,we have investigated of the type of acid,pH,microwave time,solid-liquid ratio 1∶20 g/ml.[Conclusion] The extraction rate of pectin with microwave assisted acid hydrolysis is high and the qualities meet the national standard,which have a good economic and social benefit.