Varela-Moreiras G, Antoine J M, Ruiz-Roso B, Varela G
Department of Nutrition, Faculty of Pharmacy, Complutense University, Madrid, Spain.
J Am Coll Nutr. 1992 Apr;11(2):168-71.
In the present study we evaluated lactose malabsorption (LM) after ingestion of three dairy products in 53 healthy institutionalized elderly people. A preliminary screening with milk (250 ml, 11 g lactose) was carried out to select the LM subjects using the H2 breath test. The effect of consuming an equivalent amount of lactose contained in yogurt and fermented-then-pasteurized milk (FPM) was then assessed in LM subjects. Results indicated that 36% of the elderly population studied was considered as LM and that breath H2 excretion was significantly higher after ingestion of milk than after ingestion of yogurt. This beneficial effect was partially eliminated when FPM was tested. Moreover, breath H2 excretion was significantly higher (p less than 0.05) 3 hours after ingestion of FPM compared to the normal yogurt. These results demonstrate a high prevalence of LM in the elderly and confirm the positive effect of yogurt on lactose absorption, whereas pasteurized yogurt did not cause the same effect.
在本研究中，我们评估了53名健康的机构养老老年人摄入三种乳制品后的乳糖吸收不良（LM）情况。首先用牛奶（250毫升，含11克乳糖）进行初步筛查，通过氢呼气试验来挑选出乳糖吸收不良的受试者。然后在乳糖吸收不良的受试者中评估食用等量酸奶和发酵后巴氏杀菌乳（FPM）中所含乳糖的效果。结果表明，所研究的老年人群中有36%被认为存在乳糖吸收不良，并且摄入牛奶后呼出的氢气量显著高于摄入酸奶后。在测试发酵后巴氏杀菌乳时，这种有益效果部分消失。此外，与普通酸奶相比，摄入发酵后巴氏杀菌乳3小时后呼出的氢气量显著更高（p<0.05）。这些结果表明老年人中乳糖吸收不良的发生率很高，并证实了酸奶对乳糖吸收有积极作用，而巴氏杀菌酸奶则没有同样的效果。
