Title: Use of the enzyme for raising the SDF content in sweet potato
Abstract: Sweet potato residue was consist of three kinds of materials,which were red picea red heart,red picea white heart and white picea red heart.Compared through the experiment,the results of contents of the soluble dietary fiber showed that red picea white heart sweet potato was the best material to extract and convert to soluble dietary fiber.The dried and smashed sweet potato residue was used as the raw materials.Sweet potato residue dietary fiber were extracting by mixing enzyme(α﹣maylase:glueomaylose,l:3).The dietary fiber was converted to soluble dietary fiber by cellulase in the materials.The precipitate was collected and the soluble dietary fiber was obtained by adding four times ethanol.The optimized conditions to degrade dietary fiber,explored through single factors and orthogonal experiment,were 125 μL of cellulase,reaction time of 2.5 h,temperature of 50 ℃,and pH of 4.0.The contents of the soluble dietary fiber in sweet potato residue could be increased from 32.19% to 60.97%,compared with the experiment that were not use the cellulase,which raised by 28.78%.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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