Are non viable lactic acid bacteria beneficial to humans

Non viable lactic acid bacteria have certain benefits to the human body, mainly by providing metabolic products. The benefits of non viable lactic acid bacteria include promoting digestion, regulating intestinal microbiota, enhancing immunity, improving lactose intolerance, and assisting nutrient absorption.

1. Promoting digestion

Although non viable lactic acid bacteria lose their activity during processing, their metabolites such as lactic acid and short chain fatty acids are still retained. These substances can lower the pH value of the intestine, stimulate the secretion of digestive enzymes, and help break down protein and fat in food. Some people experience reduced bloating and improved regularity of bowel movements after consuming it.

2. Regulating Microecology

Non active bacterial components can be used as prebiotics by beneficial bacteria in the gut, promoting the proliferation of bifidobacteria and other bacteria. The polysaccharides in its cell wall can competitively inhibit the attachment of pathogenic bacteria and maintain the balance of intestinal microbiota. Long term intake can help alleviate antibiotic associated diarrhea to some extent.

3. Enhancing immunity

Peptidoglycan components of non living bacteria can activate intestinal immune cells and increase the level of secreted IgA. The DNA fragments of some strains have immunomodulatory effects, which can moderately stimulate macrophage activity, but the enhancement effect on systemic immunity is weaker than that of live bacterial preparations.

4. Improving lactose intolerance

The β - galactosidase retained by non viable lactic acid bacteria can help break down lactose in dairy products and alleviate bloating and diarrhea symptoms in lactose intolerant individuals. Suitable for the production of dairy products for pre digestion treatment, but the effect is slightly inferior to that of live bacterial fermentation products.

5. Auxiliary nutrient absorption

The organic acids produced by SEP metabolism can promote the dissolution of minerals such as calcium and iron, and improve bioavailability. The B vitamins and vitamin K produced by fermentation of some strains can be absorbed by the human body, but the content is greatly affected by processing technology.

It is recommended to choose qualified products that have undergone sterilization process control to avoid excessive damage to the active ingredients caused by high temperature treatment. Eating vegetables and fruits rich in dietary fiber has a better effect, and those with gastrointestinal sensitivity should start with small amounts. Non viable lactic acid bacteria cannot replace live bacterial preparations in the treatment of severe intestinal dysbiosis, and should be consulted with a physician for use in special health conditions. Daily intake can be moderate through foods such as yogurt and fermented soy products, and individual tolerance should be observed.