牛奶生物发酵对大鼠肠道铁吸收率的影响  

Effects of biological zymolytic milk on the intestinal tract absorptivity of iron in rats

作　　者：毛丹丹[1] 蒋宝泉[1] 杨剑[1] 唐蓉[1] 曹艳芬[1] 

机构地区：[1]第三军医大学大坪医院营养科,重庆400042

出　　处：《肠外与肠内营养》2006年第2期68-70,共3页Parenteral & Enteral Nutrition

基　　金：重庆市科委资助项目(批准号:7869)

摘　　要：目的:通过牛奶生物发酵对肠道铁吸收率影响的实验研究,为高生物利用率补铁食品开发提供实验依据;方法:W istar雄性大鼠30只,随机分为实验组和对照组。大鼠以去铁基础饲料喂养3 d后,对照组经灌胃法给予含80μg55Fe的Na55Fe EDTA强化牛奶;实验组经灌胃法给予含80μg55Fe的Na55Fe EDTA生物发酵酸奶,用LS6500型液体闪烁计数仪检测粪便及血液、肝、脾等组织中55Fe含量;结果:实验组动物肠道55Fe的吸收率为(15.2±3.4)%;对照组为(11.0±3.2)%,两组差异非常显著(P<0.01);血液55Fe含量实验组为(0.92±0.37)mg/L,对照组为(0.76±0.29)mg/L,差异也非常显著(P<0.01);实验组肝和脾中55Fe含量虽高于对照组,但差异并不显著。结论:牛奶生物发酵能明显提高肠道铁的吸收率。Objective ： To observe the effects of biological zymolytic milk on the intestinal tract absorptivity of iron in rats. Methods ： Thirty male Wistar rats were randomly divided into control group and experiment group. The rats were fed basic diety without Fe for 3 days. Then rats in control group received Na^55Fe EDTA fortified milk by intragastric administration, while rats in experiment group received Na25 Fe EDTA zymolytic milk. The content of ^55Fe in feces, blood,liver and spleen was measured. Results ：The intestinal tract absorptivity of 53 Fe in experiment group was significantly higher than that in control group （P 〈0.01）, and the content of ^55Fe in blood was significantly different between the two groups. The contents of 22 Fe in liver and spleen in experiment group were higher than those in control group. Con- clusion ：The biological zymolytic milk can increase the intestinal tract absorption of ^55Fe.

关 键 词：生物发酵 铁 吸收率 

分 类 号：R151[医药卫生—营养与食品卫生学]