"Lactic Acid (for food additives) 50ml" is a lactic acid, an acidulant for food additives. Lactic acid is an acid with a sour taste that is produced when lactose (milk sugar) is combined with microorganisms. It is used as a food additive, as an acidifier to add sourness, and as a preservative. Since it is the sour component of milk, lactic acid is also naturally present during the processing of yogurt and cheese. It is often added to sweets and beverages to enhance taste and flavor and to prevent deterioration. It is also used to add acidity to pickles, etc. 50ml pack.