【摘要】 从代表内蒙古牧区不同地域特点和独特生态环境的9个盟市18个牧业旗519户牧民家庭,使用目的采样和层次分类随机采样相结合的方法,共采集鲜乳及乳制品样品752份,分离到947株乳酸菌,并通过形态、染色、培养特性及生化反应等实验对其进行了鉴定,有765株实验菌株分别归于7个属50个种和亚种,其中归于乳杆菌属的有28个种和亚种;归于双歧杆菌属的有2个种;归于肠球菌属的有9个种;归于链球菌属的有1个种;归于乳球菌属的有3个种和亚种;归于明串珠菌属的有6个种和亚种;归于片球菌属的有1个种。研究表明,内蒙古牧区乳及乳制品中乳酸菌的种类多、分布广;有些菌株对温度和pH值等环境条件的适应性强;有些菌株还有较强发酵利用松三糖、蜜二糖、棉子糖等糖的能力。更多还原

【Abstract】 In this paper,752 samples of fresh milk and dairy products were collected from 519 households in different pastoral areas of Inner Mongolia,and the lactobacillus in the samples was isolated,with its biological properties studied.A total of 765 strains were identified,belonging to 28 species and subspecies of Lactobacellus,2 species of Bifidobacterium,9 species of Enterococcus,3 species and subspecies of Lactococcus,1 species of Streptococcus,6 species and subspecies of Leuconostoc,and 1 species of Pediococcus,which indicated that in the milk and dairy products of Inner Mongolia,there widely spread many kinds of lactobacillus.Some strains had high adaptability to environmental temperature and pH,and even,some of them had stronger capability of using melezitose,melibiose and raffinose,etc as carbon source.更多还原