L-Kali Lactate (E326) được sản xuất bằng neutralizing L-lactic acid (obtained by fermentation of carbohydrates) with potassium hydroxide or potassium carbonate. It functions as a shelf-life extender by reducing water activity (aw) and through direct antimicrobial activity of the lactate anion, which disrupts energy metabolism in sensitive bacteria. Unlike acidic preservatives such as sorbates or benzoates, potassium lactate is effective across a broader pH range (up to pH 7) making it particularly valuable in near-neutral protein-based foods.
It is a sodium reduction tool. Sản phẩm cung cấp the same preservative benefit as sodium lactate with roughly half the sodium equivalent. Approved as E326 in the EU, permitted under FDA 21 CFR 184.1639 (as lactic acid), and được sử dụng rộng rãi trong processed meat applications globally.