黑曲霉发酵提取甘薯渣中水不溶性膳食纤维的工艺研究  

Study on extraction of insoluble dietary fiber from sweet potato residue by aspergillus niger fermentation

作　　者：田亚红[1] 常丽新[1] 贾长虹[1] 孟繁博[1] 

机构地区：[1]河北联合大学生命科学学院,河北唐山063000

出　　处：《粮油食品科技》2014年第4期86-88,共3页Science and Technology of Cereals,Oils and Foods

基　　金：河北省唐山市科技局项目(13130296b)

摘　　要：以甘薯渣为原料,对黑曲霉发酵提取水不溶性膳食纤维(IDF)的工艺进行研究,考察了发酵时间、料液比及接种量对IDF得率的影响。研究结果表明:最佳甘薯渣水不溶性膳食纤维的提取条件为发酵时间120 h、料液比1:40、接种量6%,在此条件下IDF得率为24.39%,所制得的甘薯渣膳食纤维素的持水力和膨胀力分别为4.33 g/g、3.57 mL/g。Abstract ：The sweet potato residue was fermented with aspergillus niger to extract insoluble dietary fiber （IDF）. The effects of fermentation time, solid -liquid ratio and inoculation amount on the extraction yield of IDF were investigated. The result showed that the optimal extraction condition was： fermentation time 120 h, solid - liquid ratio 1：40 and inoculation amount 6%. Under the condition, the yield of IDF was 24.39%. The water holding capacity and swelling capacity of the dietary fiber were 4.33 g/g and 3.57 mL/g respectively.

关 键 词：甘薯渣 黑曲霉 水不溶性膳食纤维 发酵 

分 类 号：TQ920.6[轻工技术与工程—发酵工程]