Lactic acid bacteria refers to the main product of fermentation of sugars to lactic acid without spores, Gram-positive bacteria in general. Lactobacillus is a probiotic exist in the human body. Lactic acid bacteria able to ferment carbohydrates into lactic acid, hence the name. Probiotics to help digestion, help the health of the human intestines, often regarded as a health food, add yogurt. Most commonly used strains in the industry, especially on the food industry. Dairy products, fermented plant foods such as pickles and sauerkraut, silage, and the human gut, especially in the suckling gut. Lactic acid fermentation principle of enzyme catalysis conversion of glucose into lactic acid and release energy available to their own life activities.