Abstract:Kapok flower possesses both nutritional and dietary therapeutic value，and it is rich in dietary fiber.In this study，the soluble dietary fiber was extracted from kapok flower by using an enzymatic method.The extraction process was optimized through single-factor experiments and response surface experiments.The enzymatic hydrolysis time，solid-to-liquid ratio，enzyme dosage，and enzymatic hydrolysis temperature were selected as investigated factors.Among these，the three most influential factors were selected for response surface optimization experiments.The results showed that the optimal process conditions for extracting soluble dietary fiber from kapok flower were as follows： enzymatic hydrolysis time of 75 min，solid-to-liquid ratio of 1∶40 （g∕mL），enzyme dosage of 0.38%，and enzymatic hydrolysis temperature of 86 ℃.Under the process，the extraction yield of soluble dietary fiber from kapok flower reached 15.788%.