Nisin: A Natural Antimicrobial Preservative for Safer, Longer-Lasting Foods

In today’s food industry, the demand for clean-label, natural preservatives continues to grow—driven by consumer preferences and stricter safety standards. Among the most trusted natural preservatives available, Nisin stands out for its ability to combat bacterial spoilage, extend shelf life, and maintain food quality without compromising safety or taste. At Jiangsu Zipin, we offer high-quality Nisin sourced directly from China’s leading fermentation facilities, delivering consistent performance in food preservation across a wide range of applications.

What Is Nisin?

Nisin is a natural antimicrobial peptide produced by the fermentation of a milk-based medium using Lactococcus lactis subsp. lactis. After fermentation, the active compound is concentrated, dried, and standardized with sodium chloride, resulting in a product with a known and stable antimicrobial potency.

Its broad-spectrum activity against Gram-positive bacteria, especially spore-forming species like Bacillus and Clostridium, makes it highly effective in processed food systems.

Key Specifications of Nisin from Jiangsu Zipin

· Appearance: Slight brown to white powder  

· Potency: ≥900 IU/mg  

· Loss on Drying: ≤3.0%  

· Sodium Chloride Content: ≥50%  

· Lead (Pb): ≤1.0 mg/kg  

· Microbiological Standards:  

 · Total counts: <10 CFU/g  

 · Coli group: <3.0 MPN/g  

 · E. coli: <3.0 MPN/g  

 · Salmonella: Not detectable  

These quality metrics ensure that every batch meets global food safety regulations and customer expectations.

How Nisin Works in Food Preservation

Nisin acts by inhibiting the growth of Gram-positive bacteria, particularly by disrupting the bacterial cell membrane and preventing spore germination. It is especially effective in:

· Heat-processed foods  

· Low pH food products (e.g., cheeses, dressings, canned goods)  

· Ready-to-eat meals and vacuum-packed meats

However, it is not effective against Gram-negative bacteria, yeasts, or molds—making it most valuable in systems where Gram-positive spoilage is a primary concern.

Why Choose Jiangsu Zipin as Your Nisin Supplier?

With years of experience in microbial fermentation and food-grade preservation solutions, Jiangsu Zipin is your reliable partner for high-purity Nisin. We ensure:

· Consistent potency for predictable performance  

· Strict quality control to meet international food safety standards  

· Competitive sourcing from China’s trusted fermentation supply chain

Our technical support team also offers formulation advice to help customers integrate Nisin effectively into their products while maintaining taste, texture, and label claims.

As food producers continue to look for safer, cleaner, and more effective preservation methods, Nisin remains a go-to solution for bacterial control in processed and acidic food systems. With proven results and natural origins, it bridges the gap between product safety and consumer trust.