素食人群与非素食人群肠道菌群分布对比分析

Comparative analysis of intestinal flora distribution between vegetarian and non-vegetarian

目的通过比较素食人群与非素食人群肠道菌群分布,探讨饮食习惯与人体肠道菌群分布之间的关系。方法将50例素食者纳入研究组,50例非素食者纳入对照组,收集所有研究对象粪便标本,测定粪便标本pH值,使用经典的细菌分离培养和鉴定方法,比较两组研究对象粪便标本的细菌总数及肠杆菌、肠球菌、拟杆菌、乳酸杆菌和双歧杆菌的数量。结果研究组粪便标本pH值低于对照组粪便标本pH值,差异有统计学意义(P<0.05)。两组细菌总数差异无统计学意义(P>0.05),研究组的双歧杆菌与乳酸杆菌数量明显少于对照组,差异有统计学意义(P<0.05)。结论从肠道益生菌数量的角度来看,非素食饮食更有利于健康,素食人群可通过服用微生态活菌制剂或适量增加蛋奶制品的摄入来增加肠道益生菌的数量,以增强人体的抗病能力。

Objective By comparing the distribution of intestinal flora between vegetarians and non-vegetarians,the relationship between diet habits and the distribution of intestinal flora in human body was discussed.Methods Collected fecal specimens from 50 vegetarians(study group)and 50 non-vegetarians(control group).Determinated pH in fecal specimens,then isolated,cultured and identified bacteria by classical methods.Compared the total number of bacteria,and the amount of Enterobacter,Enterococcus,Bacteroides,Lactobacillus and Bifidobacterium between the two groups.Results Fecal pH in study group was lower than that in control group(P<0.05).There was no difference on the total number of bacteria in the two groups(P>0.05),the number of Bifidobacterium and Lactobacillus in study group were significantly lower than those in control group(P<0.05).Conclusion According to the number of intestinal probiotics,non-vegetarian diet seems to be better for health.Vegetarians could increase the number of intestinal probiotics by taking microecologically viable preparations or increasing the intake of egg and milk products to enhance the body′s resistance to disease.