L-lactic acid is an organic acid refined by biological fermentation using corn starch as a raw material. It is a colorless, clear, viscous liquid with an acidic reaction in aqueous solution. It can be mixed with water, ethanol or ether, and it is insoluble in chloroform. Because of its left-handed characteristics, it has good biological compatibility, can be compatible with mammals, can directly participate in human metabolism, without any side effects, and is widely used in food, medicine and other fields;
1. Food industry: It is mainly used in food processing industry such as confectionery, beverages (such as beer, wine and lactic acid beverages). As an acidulant and taste regulator, it is called an absolutely safe food additive. It can also be used for the processing and preservation of refreshing drinks and vegetables;
2. Pharmaceutical industry: L-lactic acid is an important pharmaceutical intermediate, which can be used to produce erythromycin Ringer’s solution, L-calcium lactate, L-lactic acid, L-lactic acid, L-ferrous lactate and other drugs can also be used as germicidal disinfectants in the operating room, ward, laboratory, etc.
3. Cosmetics: can be used as a moisturizer, humectant, skin refresher, pH adjuster, acne remover, tartar remover;
4. Pesticide industry: L-lactic acid has high biological activity, is non-toxic and harmless to crops and soil, and can be used to produce new environmentally friendly pesticides. It has been vigorously promoted in developed countries such as Japan and the United States.
5. Tobacco industry: proper addition of L-lactic acid can improve the quality of tobacco and maintain the humidity of the tobacco; leather manufacturing industry: can make leather soft and delicate, thereby improving the quality of the leather; textile industry: can be used to treat fibers, can make it Easy to color, increase gloss and soft touch.