pH Dependence of Nisin
Nisin exhibits optimal stability under acidic conditions (pH 2.0–6.0). In this range, its phosphate ester bond and peptide chain structure remain intact, retaining over 90% of antimicrobial activity after storage for 6–12 months at room temperature. However, under neutral or alkaline conditions (pH > 7.0), Nisin is prone to hydrolysis of the peptide bond and deamidation of amino acid residues, leading to rapid activity loss. For example, at pH 8.0, its activity decreases by 50% within 24 hours at 25℃, and almost completely inactivates at pH 10.0. This characteristic makes it particularly suitable for acidic foods such as dairy products, fruit juices, and pickles, while requiring pH adjustment (e.g., adding lactic acid) or modification (e.g., microencapsulation) for neutral/alkaline foods like meat products and soy sauce.
Другие товары поставщика
|
|
Nisin 500g |
The antibacterial mechanism of Nisin does not affect human cellsNisin exerts its antibacterial effect by destroying the cell membranes of bacteria,... |
|
|
Nisin Raw Material Supplier |
In addition to its preservative effects, nisin can also improve food quality. It does not alter the color, aroma, flavor, or texture of the food, a... |
|
|
Nisin 25KG |
Nisin maintains strong antibacterial activity under heat treatment conditions, especially in acidic environments (pH < 5)—a key advantage ... |
|
|
Nisin Raw Material Price |
Nisin(Lactic acid streptococcin), as a biological preservative, holds extensive application prospects in meat products. It not only effectively inh... |
|
|
Natamycin |
New products coming soon！Welcome to inquire and book！
Natamycin is a natural antifungal agent and antibiotic that belongs to the polyene macrolide ... |
Все товары поставщика
Похожие товары
