What is the relationship between probiotics and lactic acid bacteria?
Release date: 2016-08-24
In recent years, lactic acid bacteria beverages and yogurt brands have been diversified, and various brands of probiotics and lactic acid bacteria are dazzling. What is the relationship between probiotics and lactic acid bacteria? What is the difference between active lactic acid bacteria and non-active lactic acid bacteria? Are these probiotics really good for your health? Next, Xiaobian solve your confusion .
In 2002, FAO / WHO regulated the overview of probiotics. Probiotics are a type of living microorganisms. When a sufficient amount of live bacteria reach the host's intestine and colonize to change the host's intestinal colony balance, and then play a role in the host. Health effects. Human probiotics are mainly derived from lactic acid bacteria, including Lactobacillus, Bifidobacterium, Streptococcus, etc., and also include a kind of probiotics yeast, Bladder yeast (Billion live) is currently the only non-marketed non-bacteria Pathogenic fungal microecological preparations. Probiotics have been promoted by people as a new favorite for health because of their effects such as promoting gastrointestinal health, treating various gastrointestinal diseases, and improving immunity.
["Who" can "finalize" probiotics]
The selection criteria for whether a microorganism can be used as a probiotic should include the following: (1) safety, the bacteria cannot be pathogenic and have a toxic effect on the human body; (2) originated from the intestinal tract of a healthy human body. Microorganisms are generally considered not to be harmful to the human body, and can better adapt to the micro-ecological environment in the intestinal tract of the body; (3) have better tolerance to gastric acid and bile; (4) have detectability, such as Effects of colonies adsorbed on intestinal epithelial cells, viability, effects on human large intestine function, production of bacteriostatic substances, etc. Table 1 lists the types of probiotics that can be used in food issued by the General Office of the Ministry of Health of China.
[Domestic standards stipulate the content of lactic acid bacteria]
8 CFU/g (mL)。 Lactic acid bacteria are a group of probiotics that are closely related to our intestinal health. They are widely present in foods, and only a sufficient amount of live lactic acid bacteria can produce probiotic effects. The state has established standards for the content of lactic acid bacteria in foods, such as QB / T4575- The 2013 "Lactic Acid Bacteria for Food Processing" stipulates the classification, physical and chemical indicators, and microbial indicators of lactic acid bacteria for food processing. Among them, the number of viable lactic acid bacteria in the lactic acid bacteria starter ≥ 1 × 108 CFU / g (mL). 6 CFU/g (mL)。 Both GB19302-2010 "National Standard for Food Safety Fermented Milk" and GB16321-2003 "Lactic Acid Bacteria Drink Hygienic Standard" stipulate that the number of viable lactic acid bacteria is ≥1 × 106 CFU / g (mL).
[Detection method of lactic acid bacteria]
At present, the detection of lactic acid bacteria in China mainly includes qualitative detection and quantitative detection. The national food safety standard GB4789.35-2010 "Food Microbiological Examination of Lactic Acid Bacteria" specifies the quantitative detection methods for the total number of lactic acid bacteria, the count of bifidobacteria, the count of Streptococcus thermophilus, and the count of lactobacillus. The standard also specifies the thermophilic chain. Qualitative testing methods for cocci and lactobacilli. GB4789.34-2012 "Identification of Bifidobacterium in Food Microbiological Examination" stipulates the qualitative detection method of Bifidobacterium.
 Guo Benheng, Liu Zhenmin. Probiotics [M]. Beijing: Chemical Industry Press, 2015