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What is lactic acid
**Introduction to Lactic Acid** Lactic acid is a versatile organic compound widely used in food, cosmetics, pharmaceuticals, and industrial applications. Naturally produced during fermentation, it acts as a preservative, pH regulator, and flavor enhancer in food products like dairy, beverages, and baked goods. In skincare, it serves as a gentle exfoliant, promoting cell renewal and hydration. Industrially, it is a key ingredient in biodegradable plastics and eco-friendly materials. With its antimicrobial properties and mild acidity, lactic acid is valued for its safety and effectiveness. As demand for sustainable and natural ingredients grows, lactic acid continues to play a crucial role in multiple industries.
Preparation Process: Lactic acid can be prepared through microbial fermentation or chemical synthesis. **Microbial fermentation:** Carbohydrates like glucose or lactose are fermented by bacteria (e.g., *Lactobacillus*) under anaerobic conditions at 30–40°C for 2–5 days. The broth is then acidified, filtered, and purified via distillation or crystallization. **Chemical synthesis:** Acetaldehyde reacts with hydrogen cyanide to form lactonitrile, which is hydrolyzed with sulfuric acid to yield lactic acid. Alternatively, propylene oxide is oxidized to lactic acid using a catalyst. Both methods require neutralization, purification, and concentration to obtain high-purity lactic acid. Fermentation is more sustainable, while chemical synthesis offers higher yields.
Usage Scenarios: Lactic acid is widely used in food preservation as an antimicrobial agent and pH regulator. In cosmetics, it acts as an exfoliant and moisturizer in skincare products. The pharmaceutical industry employs it in drug formulations and as a surgical antiseptic. It serves as a biodegradable solvent in chemical synthesis and a descaling agent in industrial cleaning. In textiles, it aids in dyeing and finishing processes. The compound is also utilized in animal feed as an acidulant to improve digestion. Additionally, lactic acid is a key component in producing polylactic acid (PLA), a biodegradable plastic used in packaging and medical implants.
lactic acid Basic Info
lactic acid Price
1. **United States**: $1.50 - $3.00 per kg
2. **China**: $1.00 - $2.50 per kg
3. **Russia**: $1.50 - $3.00 per kg
4. **Germany**: $2.00 - $4.00 per kg
5. **India**: $1.20 - $2.80 per kg
6. **Japan**: $2.50 - $4.50 per kg
7. **Brazil**: $1.80 - $3.50 per kg
8. **South Korea**: $2.00 - $3.80 per kg
9. **Philippines**: $1.50 - $3.00 per kg
10. **United Kingdom**: $2.00 - $4.00 per kg
11. **France**: $2.00 - $4.00 per kg
12. **Mexico**: $1.50 - $3.50 per kg
13. **Canada**: $1.80 - $3.50 per kg
14. **South Africa**: $1.50 - $3.00 per kg
15. **Egypt**: $1.50 - $3.00 per kg
16. **Turkey**: $1.50 - $3.00 per kg
17. **Thailand**: $1.20 - $2.80 per kg
18. **Indonesia**: $1.20 - $2.80 per kg
If no specific data is available for a country, it is marked as "No results." Prices are approximate and subject to change based on market conditions.
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