新疆紫花苜蓿水不溶性膳食纤维的制备及脱色研究  

Study on the preperative of high reactive dietary fibre with alfalfa dregs and discoloration

作　　者：杨林[1] 郑力[1] 王宇平[1] 李友广[1] 

机构地区：[1]新疆大学生命科学与技术学院,乌鲁木齐830046

出　　处：《食品科技》2008年第7期92-95,共4页Food Science and Technology

基　　金：新疆生物资源基因工程重点实验室项目(XJDX0201-2005-08)

摘　　要：以提取苜蓿蛋白后的新疆紫花苜蓿渣为原料,提取水不溶性膳食纤维的实验研究,研究的关键在于对膳食纤维进行脱色与去除草腥味。由正交实验结果表明:提取水不溶性膳食纤维的最优提取条件为:碱浸温度为30℃,碱浸时间40min,酸浸温度为90℃,酸浸时间为3h,得率为73.91%。采用混合溶剂处理使水不溶性膳食纤维呈白色且无草腥味,其膨胀力高达8.15mL/g,持水力为830%。The dietary fibre was preperative with alkali hydrolysis and acid hydrolysis from alfalfa dregs. The result of orthogonal experiment indicated that the optimum conditions of extracting insoluble fibre were： immersion in alkali liquor 30 ℃, 40 min, immersion in acid pickle were 90 ℃, 3 hours. The extraction rates of insoluble fibre is 73.91%（on the dry basis） respectively. The products smell well and the colors is white. For insoluble fiber, its expansive capacity was 8.15 mL/g and water holdincl capacity was 830%.

关 键 词：苜蓿草渣 膳食纤维 制备 脱色 

分 类 号：TS201[轻工技术与工程—食品科学]