Overview
Lactic acid acidity regulator is a versatile food additive derived from the fermentation of carbohydrates by lactic acid bacteria. It is widely used to adjust pH levels, enhance flavor, and act as a preservative in various food and beverage products. Its natural origin and mild acidity make it a preferred choice in the food industry. As a GRAS (Generally Recognized As Safe) substance, lactic acid is approved for use in numerous countries. It is also utilized in pharmaceuticals and cosmetics for its antimicrobial and moisturizing properties. The compound is available in both synthetic and naturally fermented forms, with the latter being more common in food applications.
Physical and Chemical Properties
Lactic acid is a colorless to pale yellow syrupy liquid with a mild acidic taste. It has a molecular weight of 90.08 g/mol and a density of 1.209 g/cm³. The compound is highly soluble in water, ethanol, and glycerol, making it easy to incorporate into various formulations. Its melting point is 16.8°C, and it boils at 122°C under reduced pressure. Lactic acid exists in two optical isomers, L-lactic acid and D-lactic acid, with the L-form being more biologically active. The compound's mild acidity and antimicrobial properties are key to its effectiveness as an acidity regulator and preservative.
Main Applications
Lactic acid acidity regulator is predominantly used in the food and beverage industry to adjust pH levels, enhance flavor, and extend shelf life. It is commonly found in dairy products, baked goods, meats, and soft drinks. Its antimicrobial properties help inhibit the growth of spoilage organisms and pathogens. In the pharmaceutical industry, lactic acid is used in topical formulations for its moisturizing and exfoliating effects. It is also a key ingredient in cosmetics, particularly in skincare products designed to improve texture and hydration. Additionally, lactic acid is employed in biodegradable plastics and cleaning agents due to its eco-friendly properties.
Safety and Storage
Lactic acid is generally recognized as safe (GRAS) for use in food and cosmetics. However, concentrated forms may cause skin or eye irritation, so proper handling and protective equipment are recommended. The compound should be stored in a cool, dry place away from direct sunlight to maintain stability. Food-grade lactic acid must meet strict purity standards to ensure safety. Regulatory bodies such as the FDA and EFSA have established guidelines for its use in various applications. Always check the concentration and purity specifications when procuring lactic acid for industrial use.
B2B Procurement Guide
When sourcing lactic acid acidity regulator, prioritize suppliers with food-grade certification and a proven track record of reliability. Verify the product's purity, concentration, and compliance with relevant regulations such as FDA or EU standards. Bulk purchases typically offer cost savings, but ensure proper storage facilities are available. Consider the form of lactic acid required—liquid or powder—based on your application. Request samples to test compatibility with your formulations. Additionally, evaluate the supplier's logistics capabilities to ensure timely delivery and minimal disruption to your operations. Price ranges vary depending on quantity and purity, with approximate costs of $1.50-$3.00 per kg.
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