Supply Natural Preservative Nisin

Nisin is a natural preservative produced by Lactococcus lactis, a type of lactic acid bacteria. It is a polypeptide antimicrobial substance widely used in the food industry to extend the shelf life of products.

Nisin has a strong inhibitory effect on various Gram-positive bacteria, including Listeria, Staphylococcus aureus, and certain lactobacilli.Although its direct inhibitory effect on Gram-negative bacteria is weaker, it can still exhibit antimicrobial activity when combined with chelating agents such as EDTA.

Nisin works by binding to bacterial cell membranes, disrupting their integrity, and causing leakage of cell contents, leading to bacterial death. This mechanism gives it a strong bactericidal effect.

Application Areas

1.  Food Industry

·Dairy Products: Nisin is widely used in cheese, yogurt, and other dairy products to extend their shelf life.

·Meat Products: In processed meat products, nisin can inhibit pathogens like Listeria and Staphylococcus aureus, ensuring food safety.

·Beverages: In certain beverages, such as juices and beer, nisin can prevent microbial contamination.

·Canned Foods: Nisin can extend the shelf life of canned foods by reducing spoilage caused by microorganisms.

2.  Pharmaceuticals and Health Products

·Oral Care: Nisin can be used in oral care products, such as mouthwash and toothpaste, to help control oral bacteria.

·Medical Devices: Nisin can be added to the surface coatings of certain medical devices to prevent microbial contamination and infection.

Advantages

1.  High Safety

·Nisin is considered a safe food preservative and has been approved by multiple food safety regulatory agencies, including the US Food and Drug Administration (FDA) and the European Food Safety Authority (EFSA).

2.  No Antibiotic Resistance

·Unlike antibiotics, the use of nisin does not lead to bacterial resistance, making it safe for long-term use in food.

3.  Good Thermal Stability

·Nisin has excellent thermal stability and can maintain its activity during food processing.

Usage Methods

1.  Dosage

·The amount of nisin added varies according to different food types and specific applications, generally ranging from 10 to 50 ppm.  The exact dosage should be determined based on relevant food regulations and actual application needs.

2.  Combination Use

·Nisin can be used in combination with other preservatives or natural antimicrobial agents, such as spice extracts, to enhance antimicrobial effects and extend the shelf life of food.

As a natural preservative, nisin has a wide range of applications in the food industry.  With its efficiency, safety, and lack of antibiotic resistance, it has become an important choice for extending food shelf life and ensuring food safety.  In the future, as food safety requirements continue to increase, the application prospects of nisin will become even broader.