Potassium hydroxide applications in cheese production; Casein and Whey production; and Milk processing
Potassium hydroxide (KOH), E525, functions primarily as an Alkalinity regulator, Stabilizer, and Processing aid throughout the entire dairy processing sector.
Potassium Hydroxide in Cheese Production
- Norbixin Colour Solubilization: Cheese manufacturers add KOH to enhance the solubility of norbixin (annatto extract) within the cheese matrix, ensuring an even, natural orange coloration.
- Acidity Regulation: It functions as a precise pH buffer during standard manufacturing to counter over-acidification and manage optimum calcium drainage.
- Processed Cheese Stabilization: It acts as a texturizer and structural stabilizer in processed cheese, spreads, and cheese analogues.
Potassium Hydroxide for Casein and Whey Processing
- Potassium Caseinate Neutralization: Processing lines mix aqueous KOH with raw, insoluble acid casein to neutralize it, yielding highly soluble potassium caseinate used in health supplements and foods.
- Whey Stream Fractionation: KOH adjusts the pH of liquid whey, allowing membrane filtration systems to efficiently isolate and extract whey protein concentrates (WPC) and isolates (WPI).
- Protein Aggregation Control: It alters the pH environment to manage heat-induced whey protein-casein interactions, preventing unwanted gelling or protein precipitation during thermal drying.
Potassium Hydroxide Applications in Milk Processing
- Fat Emulsification: KOH works as an emulsifying agent that assists in smoothly blending natural milk fats with water-based components, maintaining consistency.
- Infant Formula pH Balance: It optimizes and balances the pH of milk-based infant formulas to safe physiological targets while supplying essential dietary potassium.
- Condensed and Powder Stabilization: It acts as an stabilizer in plain condensed, evaporated, or milk powder products to prevent protein coagulation during high-heat pasteurization.
