Lactic acid - Definition

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Lactic acid enables the production of skin cells, red blood cells, and muscle. It can be found in dairy products, wine, fruits, and vegetables. It is naturally produced by the body during physical exercise and disappears an hour afterwards. This acid is responsible for muscle cramps when too much is accumulated. Besides being used to acidify or as a taste enhancer in the food industry, lactic acid is sometimes used to destroy certain bacteria, or to locally treat mouth ulcers.