甘薯膳食纤维物化及功能特性的研究  

Study on the physico-chemical and functional properties of dietary fiber extracted from sweet potato starch residues

作　　者：郭亚姿[1] 木泰华[1] 

机构地区：[1]中国农业科学院农产品加工所,北京100193

出　　处：《食品科技》2010年第9期65-69,共5页Food Science and Technology

基　　金：现代甘薯农业产业技术体系建设专项资金;河北省杂粮加工增值;综合利用技术研究与开发课题(08230907Z-2-2)

摘　　要：采用物理筛分及酶解的方法分别从安徽、北京密云淀粉加工厂及实验室制备的甘薯渣中提取膳食纤维,并对其化学成分、物化及功能特性进行了研究。结果表明:3种不同来源薯渣提取的膳食纤维中,安徽的甘薯渣中总膳食纤维(TDF)和可溶性膳食纤维(SDF)含量最高,分别为85.32%、13.92%,明显地高于其他两种的含量。3种甘薯膳食纤维均显示有较高的持水性、吸水膨胀性和持油性。此外,安徽膳食纤维有较高的脂肪吸收、α-淀粉酶活性及胰脂肪酶活性抑制能力。因此,从大型甘薯淀粉加工废渣提取的膳食纤维具有较好的商业利用前景。In this study,the dietary fiber were extracted and purified from sweet potato starch residues of Anhui,Beijing Miyun and our laboratory by sieving and enzymolysis method,and its composition and physico-chemical properties were investigated.The results showed that the dietary fiber extracted from Anhui＇s residue had a highest total dietary fiber（TDF） and soluble dietary fiber（SDF） content compared to other two different residues,it was 85.32% and 13.92% respectively.All of the purified dietary fiber possessed a high water-holding capacity,oily-holding capacity and swelling capacity value.In addition,the dietary fiber of Anhui exhibited excellent fat absorption capacity,α-Amylase Inhibitory activity and pancreatic lipase inhibitory activity.It was,therefore,suggested that the dietary fiber which is extracted from residues of large-scale sweet potato starch factories should has the good prospects of commercial application.

关 键 词：甘薯 膳食纤维 物化特性 功能特性 

分 类 号：TS201.1[轻工技术与工程—食品科学]