food because it maintains the acidic conditions of the fermented
products, and is antagonistic to food spoilage and food poisoning
bacteria. Most species of LAB promotes the decarboxylation of
L-malate to lactate and forms CO2 if an energy source such as
glucose is present. A proton is taken up in the reaction, which
prevents the decrease of pH in the growth medium caused by lactic
acid production from glucose fermentation