摘要
利用超微粉碎技术改善豆渣的功能性质并利用其开发高附加值食品。结果表明:随着过筛目数的增加,豆渣粉的持水力、保水力和膨胀力先增加后减小;其水溶性、阳离子吸附能力、可溶性膳食纤维含量、1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基清除率及还原力持续增加;其中可溶性膳食纤维含量从60目时的6.90%增加到了300目时的11.55%,亨特白度由68.580升高到了84.165。综上所述,选取300目豆渣粉为原料,添加乙酰磺胺酸钾(acesulfame-K,AK糖)、魔芋粉、香兰素开发代餐粉,经过正交试验优化设计,得出豆渣代餐粉(以5 g为基质)最优配方为:300目豆渣粉添加量3.5 g、魔芋粉添加量1.0 g、AK糖添加量0.05 g,香兰素添加量0.01 g。同时研究豆渣代餐粉对小鼠肠道菌群的影响,结果表明豆渣代餐粉对小鼠肠道菌群调理作用明显,在增加乳酸杆菌和双歧杆菌数量的同时,还在一定程度上抑制了大肠杆菌的增殖。
Micronized okara has improved functional properties and can be used to develop high value-added products. In the present study we found that water-holding capacity, water-retention capacity and water-swelling capacity of okara powder increased initially followed by a decrease with decreasing particle size, and water solubility, action adsorption capacity, soluble dietary fiber （SDF） content, DPPH radical scavenging capacity and reducing power gradually increased. The content of SDF was increased from 6.90% to 11.55% and the value of Hunter whiteness from 68.580 to 84.165 by reducing the particle size from 60 to 300 mesh. Consequently, 300-mesh okara powder was chosen as the raw material to develop meal replacement powder with the addition of acesulfame K and konjac flour and the formulation of meal replacement powder was optimized by orthogonal array design. The results indicated that the optimal formulation contained 3.5 g of okara, 1.0 g of konjac flour, 0.05 g of acesulfame K and 0.01 g of vanillin. The meal replacement powder had an obvious regulation effect on the intestinal microflora of mice which was evidenced by increased numbers of Lactobacillus and Bifidobacterium and inhibited proliferation ofEscherichia coli at the same time.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2015年第15期199-205,共7页
Food Science
基金
重庆市科技攻关计划项目(cstc2012gg-yyjs00002)
关键词
豆渣粉
膳食纤维
超微粉碎
代餐粉
肠道菌群
okara powder
dietary fiber
ultra-fine pulverization
meal replacement powder
intestinal microflora
