"Lactic acid bacteria and bifidobacteria are the microorganisms popular for this probiotic function. These microbes inhibit the growth of proteolytic bacteria, which harms the gut by releasing toxins. The lactic acid bacteria keep the intestinal environment acidic through fermenting sugar molecules called lactose. This acidity is not suitable for the growth of proteolytic bacteria. On the other hand, bifidobacteria are observed to suppress the growth of the said bad bacteria by colonizing in the lining of the intestine."
How To Define Prebiotics And Probiotics? | Colon Health and Colorectal Cancer