摘要
以红薯粉条厂废弃薯渣为原料,制取薯渣膳食纤维。用塑料袋进行真空包装后在高压装置中以400、500、600MPa分别处理20min,对高压处理前后的薯渣膳食纤维的部分理化性质进行测定。发现:超高压处理对薯渣膳食纤维化学结构基本没有影响,但会改变纤维构成比例,使水溶性纤维含量降低,不溶性纤维含量增加。超高压处理后的膳食纤维的葡萄糖吸附能力和胆酸盐结合能力均高于对照,尤其以500MPa压力处理的膳食纤维效果最佳。因此认为,超高压薯渣膳食纤维能将葡萄糖浓度控制在较低的水平,对餐后血糖的快速升高有抑制作用。
Dietary fiber was prepared from sweet potato residue after starch extraction and was vacuum-packed with plastic bags for the 20 min ultra high pressure （UHP） treatment at 400, 500, and 600 MPa. The physical and chemical properties of UHP-treated and non-UHP-treated dietary fiber were measured. Little effect of UHP treatment was observed on the chemical structure of sweet potato dietary fiber, while the proportion of fiber type was changed： the content of water soluble fiber was reduced while that of insoluble fiber was changed reversely. Higher glucose absorption and sodium cholate binding capacities were found in UHP-treated fiber in comparison with non-UHP-treated fiber, especially in 500 MPa-treated fiber. Therefore, the conclusion was made that the glucose concentration in blood of animals or humans can be controlled at a relatively low level by the intake of UHP-treated sweet potato fiber which is able to inhibit the rapid rise in postprandial blood glucose level.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2009年第17期109-112,共4页
Food Science
基金
教育部留学回国人员基金项目(2007-1108)
关键词
膳食纤维
超高压
红薯渣
葡萄糖
胆酸盐
dietary fiber
ultra high pressure
sweet potato residue： glueose~ sodium cholate
