Effects of soybean residue compound powder on protein diges-tion dynamic in aging mice
The number of elderly person is annually increasing in China.The digestive function declines in elderly people,which in turn affects their health status.The aim of this study is to investigate the effects of soybean residue compound powder with high dietary fiber on gut protein digestion using aging mice as donate animal model,and further more provide theoretical base and practical recommendations for the soybean residue compound powder application in elderly people.This experiment adopted method of extrusion and expansion to prepare soybean residue compound,in which the ratio of soybean residue to starch is 30:70 and the average soluble dietary fiber content reached 15.47％.15-month mice were selected and randomly assigned to 3 treatments i.e.standard diet group(AIN),fish protein group(FP)and fish protein plus soybean residue(FPS,0.3 g/kg).Results indicate that the whole digestive tract digestibility of protein in FPS group was significantly higher than the other 2 groups(P＜0.05),and FP dietary protein digestibility is lower than control group(P＜0.05).The proteases trypsin and pepsin involved in protein digestion in FP group and FPS group are higher than control group respectively(P＜0.05).The gene mRNA expressions of APN,PEPT1 and GDH involved in protein digestion in liver of mice fed soybean residue compound powder were higher than the other 2 groups(P＜0.05).The above mentioned results show that soybean residue compound powder favored protein digestion in aging mice and improved the relative gene expression of protein digestion.
soybean residue compound powderdigestion dynamic of proteinaging micegene expressiondietary fiber
NETL
NSTL
万方数据
