Overview
High activity lysozyme is a hydrolytic enzyme that cleaves the peptidoglycan layer of bacterial cell walls, leading to cell lysis. It is derived from natural sources like egg whites or produced recombinantly. Due to its high specific activity, it is favored in industrial applications where efficiency is critical. This enzyme is particularly valued for its safety and biodegradability, making it a preferred alternative to synthetic antimicrobials in food and healthcare. Its versatility extends to research laboratories, where it is used for protein extraction and bacterial membrane studies.
Physical and Chemical Properties
Lysozyme is a compact globular protein with a molecular weight of approximately 14.3 kDa. It exhibits optimal activity at pH 4.0–6.0 and temperatures of 25–50°C, though high activity variants may retain function under broader conditions. The enzyme is stable in acidic environments but denatures rapidly above 70°C. Its solubility in water facilitates easy incorporation into liquid formulations, while lyophilized powders offer extended shelf life. Analytical methods like HPLC and SDS-PAGE are used to confirm purity, which is critical for pharmaceutical-grade applications.
Main Applications
In pharmaceuticals, lysozyme is used in oral care products (e.g., antimicrobial mouthwashes) and wound dressings. Its ability to target Gram-positive bacteria without disrupting human cells makes it ideal for topical formulations. The food industry employs it as a natural preservative in cheese, wine, and meat products to inhibit spoilage bacteria. In biotechnology, it serves as a gentle lysis agent for bacterial cells during protein purification. Emerging applications include biofilms prevention and veterinary medicine.
Safety and Storage
Lysozyme is generally recognized as safe (GRAS) by regulatory agencies but requires proper handling to maintain stability. Prolonged exposure to moisture or high temperatures can degrade enzymatic activity. Suppliers typically provide material safety data sheets (MSDS) with storage and handling guidelines. For long-term storage, lyophilized powder should be kept at 2–8°C with desiccants. Reconstituted solutions are stable for weeks when refrigerated but should avoid repeated freeze-thaw cycles. Personal protective equipment (PPE) like gloves and masks is recommended during weighing to prevent inhalation or contact irritation.
B2B Procurement Guide
When sourcing high activity lysozyme, prioritize suppliers with documented quality control processes, such as certificates of analysis (CoA) for each batch. Key specifications include enzymatic activity (≥20,000 U/mg), low endotoxin levels (<10 EU/mg), and absence of microbial contamination. Bulk purchases (kilograms) may offer cost advantages, but verify storage capacity to prevent waste. Consider regional suppliers to reduce logistics risks for temperature-sensitive shipments. For niche applications (e.g., GMP-grade), audit the manufacturer’s compliance with relevant standards.
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