水解乳清蛋白对生长期大鼠氮代谢影响的研究  

Influence of lactalbumin hydrolysate intaking on nitrogen metabolism of rats in growth period

作　　者：陈婷[1] 孙海岚[1] 刘洁[1] 马荣辉[2] 杨剑[1] 蒋宝泉[1] 高永良[2] 

机构地区：[1]第三军医大学大坪医院营养科 [2]重庆医科大学附属第一医院,重庆400042

出　　处：《肠外与肠内营养》2011年第6期358-360,共3页Parenteral & Enteral Nutrition

基　　金：重庆市卫生局医学科研项目计划(2008-2-17)

摘　　要：目的:观察水解乳清蛋白对生长期大鼠氮代谢的影响。方法:40只大鼠随机分为实验组和对照组。实验组饲料氮源为水解乳清蛋白(乳清蛋白肽),对照组饲料氮源为浓缩乳清蛋白(未水解乳清蛋白)。主要观察指标为蛋白质功效比值(PER)、蛋白质表观消化率(AD)和动物体重变化情况。结果:实验组大鼠PER和AD值均显著高于对照组,实验组大鼠的体重增长也明显高于对照组。结论:水解乳清蛋白在机体吸收和消化等方面优于浓缩乳清蛋白。Objective： To compare the influences of lactalbumin and its hydrolysate on nitrogen metabolism of SD rat in growing period.Methods： Forty SD rats were randomly divided into two group,i.e.,experimental group（n=20） and control group（n=20）.Rats in experimental group were fed with lactalbumin hydrolysate as nitrogen source,and in control group,whey protein as the nitrogen source.Changes of body weights were observed and protein efficiency ratio（PER） and apparent digestibility（AD） were calculated.Results： The body weights of experimental group were significantly higher than control group.The PER and AD of experimental group were also significantly higher than control group.Conclusion： The nutritive value of lactalbumin hydrolysate is superior to whey protein concentrate.

关 键 词：水解乳清蛋白 乳清蛋白 蛋白质功效比值 蛋白质表观消化率 氮代谢 

分 类 号：R151[医药卫生—营养与食品卫生学]