乳酸菌饮料活菌数符合度鉴定及温度对乳酸菌的影响

Identification of Conformity Degree of Lactobacillus Viable Count in Beverage and The Effects of Temperature on It

活性乳酸菌饮料是一种含有活乳酸菌的发酵乳饮料,在饮料市场中受到消费者的喜爱。本实验以4种市售活性乳酸菌饮料为研究对象,检验其乳酸菌活菌数符合度和不同保藏温度对活菌数的影响。结果表明,4种品牌的乳酸菌饮料的活菌数均达到其宣传数,不存在虚假宣传的现象。在保藏温度为20℃时,4种品牌乳饮料的活菌数含量均为0,无显著性差异;而在保藏温度为4℃时,4种品牌饮料中B乳酸菌活菌数最多,且远大于D品牌,与其他品牌之间差异无统计学意义。建议消费者购买活性乳酸菌饮料时,挑选在保质期内的低温保藏产品,并在未饮用前放置于低温冷藏。

Active lactic acid bacteria beverage is a kind of fermented milk beverage containing live lactic acid bacteria,which is popular among consumers in beverage market.In this experiment,four kinds of commercially available beverages with active lactic acid bacteria were used as research objects to test the compatibility degree of viable bacterial count of lactic acid bacteria and the influence of different storage temperatures on viable bacterial count.The results showed that the viable bacteria count of the four brands of lactobacillus drinks reached the advertised number,and there was no false propaganda phenomenon.When the storage temperature was 20℃,the content of viable bacteria of four kinds of milk drinks was 0,and there was no significant difference.When the storage temperature was 4℃,the number of viable lactic acid bacteria in B of the four brands was the largest,and far greater than that of D,with no statistical significance between the four brands and other brands.Consumers are advised to buy active lactic acid bacteria drinks,select products stored at low temperature within the shelf life,and put them in cold storage before drinking.