Nisin
Fundamental Properties of Nisin
Source: Biosynthesized by Lactococcus lactis during fermentation (e.g., in the production of cheese or fermented milk). It is generally recognized as safe (GRAS) by regulatory bodies like the U.S. FDA and the European Food Safety Authority (EFSA), with no known toxicity to humans at approved usage levels.
Antibacterial Spectrum: It exhibits strong activity primarily against gram-positive bacteria, including many foodborne pathogens and spoilage bacteria. Key targets include:
Pathogens: Staphylococcus aureus (causes staphylococcal food poisoning), Listeria monocytogenes (a major cause of severe foodborne illness, especially dangerous for pregnant women and the elderly), Clostridium botulinum (produces deadly botulinum toxin), and Bacillus cereus (causes gastrointestinal illness).
Spoilage bacteria: Various Bacillus and Clostridium species that cause food spoilage (e.g., bacterial slime in dairy products or off-flavors in canned foods).
It has little to no effect on gram-negative bacteria, fungi, or viruses—this specificity helps preserve the natural microbiota of some fermented foods (e.g., maintaining beneficial bacteria in yogurt).
Stability: It is heat-stable (especially under acidic conditions, pH < 5), making it suitable for heat-processed foods (e.g., pasteurized dairy, canned vegetables). However, its activity decreases in neutral or alkaline environments (pH > 7) or when exposed to certain proteolytic enzymes (e.g., trypsin in the human gut, which breaks it down, reducing potential side effects).
Другие товары поставщика
|
|
Nisin Raw Material |
Nisin’s antimicrobial activity is highly specific and effective against Gram-positive bacteria, with a mechanism that avoids the development ... |
|
|
Nisin in Beverages |
Application in Beverages: Controlling Heat-Resistant Spores and Microbial GrowthBeverages (e.g., fruit juices, beer, functional drinks) face risks ... |
|
|
Natamycin 7681-93-8 |
The action mechanism of natamycin is mainly through the specific binding with ergosterol on the fungal cell membrane, destroying the structure and ... |
|
|
Nisin Powder Supplier |
Nisin plays a vital role in the food industry as a natural, safe, and effective preservative, particularly in extending shelf life and enhancing sa... |
|
|
Gentamycin Sulfate Soluble Powder 500g |
Product Name: Shengxue ChangtaiGeneric Name: Gentamycin Sulfate Soluble PowderActive Ingredient: Gentamycin SulfateDescription: Shengxue Changtai i... |
Все товары поставщика
Похожие товары
