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Food-grade lactic acid is produced via natural fermentation. It is commonly available as 60% white powder, or colorless to pale yellow transparent liquid at concentrations of 80%, 85%, 88% and 90%.
In food processing, it functions primarily as an acidity regulator. It adjusts the pH value of food, delivers sour taste, inhibits microorganisms and enhances the overall flavor profile of finished food products.
Challenge: Most poultry, meat and seafood products are susceptible to spoilage because they are high in moisture and become tender.
Solution: Apply a 5–10% food grade lactic acid solution by spraying, soaking, or marinating. It may be combined with small amounts of sodium lactate or potassium lactate to lower product pH, inhibit harmful bacteria, retain moisture, and improve tenderness.
✓ Chilled meat shelf life may be extended by 3–5 days under suitable conditions, while better color is maintained, nitrite use may be reduced, and microbial growth can be better controlled.
Challenge: Unsuitable acidity regulator may make juice taste sharp and harsh. Some fruit, milk, fermented dairy products, create off flavors in acid.
Solution: Add 80% liquid L‑lactic acid or combine it with other acidity regulators, flavors, minerals, and other ingredients as appropriate.
✓ A smoother, more natural acidity and a more balanced flavor profile, with less harsh sourness. Dairy emulsions may also remain more stable and resist separation.
Challenge: Strong acetic acid aromas can make acidity difficult to balance, while sauces may be too pungent or spoilage that shortens shelf life.
Solution: Replace part of the acetic acid with lactic acid while maintaining the target total acidity. Adjust the pH of seasonings and sauces to help create conditions that inhibit microbial spoilage and stabilize flavor.
✓ A gentler sour taste that retains the characteristic vinegar note, with a smoother mouthfeel and more stable flavor throughout shelf life.
Challenge: Pickled vegetable products develop an overly strong vinegar aroma, or support unwanted yeast spoilage.
Solution: Add lactic acid to adjust acidity, help inhibit microorganisms, and preserve color.
✓ Crisp texture, brighter color, and a milder vinegar note.
Dough fermentation conditions and bread can become moldy, or stale.
Solution: Add food grade lactic acid powder to support a more stable fermentation environment. When appropriate, combine it with food grade calcium propionate to slow mold growth and help extend shelf life.
✓ Improved dough fermentation conditions and softer bread with better flavor.
Liquid acid may be unsuitable for some confectionery processes, and hard candy can develop sugar crystallization or graining.
Solution: Use encapsulated lactic acid powder or 60% lactic acid powder to help reduce sugar graining.
✓ A balanced sweet and sour taste, a fuller flavor profile, and improved storage stability.
Safety Note: Highly concentrated lactic acid is strongly hygroscopic and acidic and can severely irritate the skin and eyes. Use appropriate personal protective equipment when handling it.
| Polifar supplies a comprehensive portfolio of food grade acids and acidity regulators designed for precise pH control, flavor enhancement, and formulation stability. Our acid ingredients are widely used in beverages, bakery, dairy, confectionery, and processed food industries, helping manufacturers achieve consistent product quality and improved sensory performance. | ||
| Primary Acidulants | Buffering & pH Control Agents | Functional & Processing Acids |
|---|---|---|
| Provide clean acidity and improve flavor profile in food formulations. * Citric Acid (E330) Strong, clean and refreshing acidity, widely used in beverages, confectionery, and processed foods. * Malic Acid (E296) Smooth, long-lasting sour taste, ideal for fruit-flavored products and beverages. * Tartaric Acid (E334) Sharp and stable acidity, commonly used in beverages, baking, and wine-related applications. | Maintain stable pH and improve formulation consistency. * Sodium Citrate (E331) Effective buffering agent for beverages, dairy products, and emulsified systems, ensuring stable pH and improved taste balance. * Phosphoric Acid (E338) Strong inorganic acid used for precise pH adjustment, especially in soft drinks and industrial food processing. | Support processing performance, texture control, and stability. * Fumaric Acid (E297) High acidity with low dosage requirement and excellent thermal stability, widely used in bakery and dry mix systems. * Lactic Acid (E270) Mild acidity with fermentation-friendly properties, commonly used in dairy, meat products, and fermented foods. |
| Key Functional Benefit | 1. Precise pH control for stable formulations 2. Enhances flavor balance and sour taste profile 3. Improves product shelf life and stability 4. Excellent compatibility in liquid and dry systems 5. Suitable for a wide range of food processing applications | |
