Overview
Potassium lactate is the potassium salt of lactic acid, produced through the neutralization of lactic acid with potassium hydroxide. As a multifunctional compound, it serves primarily in food preservation and pH regulation due to its antimicrobial properties and buffering capacity. The substance appears in both liquid and powder forms, with the liquid version being more common in industrial applications. Its GRAS status by regulatory bodies makes it particularly valuable for food processing applications where safety and efficacy are paramount.
Physical and Chemical Properties
Potassium lactate is characterized by its high solubility in water, which facilitates its incorporation into various formulations. The compound's hygroscopic nature requires careful packaging and storage to maintain product quality. Chemically, it functions as a weak base with pH buffering capabilities in the range of 6.0-7.5. This property, combined with its antimicrobial effects against spoilage organisms, makes it particularly effective in meat preservation systems where it extends shelf life while maintaining product texture.
Main Applications
In the food industry, potassium lactate finds extensive use as a preservative in meat products, baked goods, and dairy items. It inhibits bacterial growth while enhancing flavor profiles without imparting a salty taste. The pharmaceutical industry utilizes potassium lactate as an excipient in tablet formulations and as an electrolyte replenisher. Additionally, personal care products incorporate it for its moisturizing properties and pH-adjusting capabilities in cosmetic formulations.
Safety and Storage
While generally safe for consumption, concentrated potassium lactate solutions may cause mild skin or eye irritation. Appropriate personal protective equipment should be used when handling industrial quantities. Storage requires protection from moisture and extreme temperatures. Liquid forms should be kept in sealed containers at room temperature, while powder forms benefit from desiccant packets in moisture-proof packaging to prevent caking.
B2B Procurement Guide
When sourcing potassium lactate, buyers should prioritize suppliers with certifications for food or pharmaceutical grade production. Key specifications to verify include purity levels (typically 60-80% for solutions), heavy metal content, and microbial limits. Bulk purchases often offer significant cost advantages, but require evaluation of storage capabilities. Just-in-time delivery may be preferable for liquid forms to minimize storage duration. Technical support for application-specific formulations can be a valuable differentiator among suppliers.
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