乳酸菌的种类和分布乳酸菌是指碳水化合物(即糖类等)经过发酵,获得能源所生成大量的乳酸菌群的总称。它的繁殖如同人类一样,需要很多的营养物质,因此,乳酸菌主要存在于动植物及食品当中与人类的生活息息相关。乳酸菌从形态上粗分为杆菌和球菌,在分类学上被分为12属以上的属(species)类中,到目前为止,已被证实有250种(species)以上。 Type and Distribution of Lactic Acid Bacteria Lactic acid bacteria are the generic term for the large amount of lactic acid bacteria produced by the fermentation of carbohydrates (ie, sugars). Its reproduction, like humans, requires a lot of nutrients. Therefore, lactic acid bacteria are mainly found in animals, plants and foods and are closely related to human life. Lactic acid bacteria are categorized into bacilli and cocci in morphology, and they are taxonomically classified into 12 or more species. Up to now, more than 250 species have been confirmed.