Kefir Microorganisms Break Down Milk Proteins

Kefir is a fermented dairy drink that is becoming increasingly popular in the United States and has been shown to have beneficial health effects. The drink is made by incubating heat-treated milk with “kefir grains,” which contain sugars, proteins, lactic acid bacteria, and yeast. The kefir microorganisms are known to ferment milk lactose, but it is still unclear how they affect milk proteins and whether they break these proteins down into peptides.