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.
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Wholesale Nisin 25KG |
Core Antibacterial Mechanism Nisin acts by disrupting the cell membrane of gram-positive bacteria, a process that occurs in two main steps (as intr... |
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Nisin Price |
Customization of nisin, a natural antimicrobial peptide, may be required for various applications, and several manufacturers are equipped to meet s... |
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Nisin Antibacterial agent |
Antimicrobial Characteristics ·Inhibition Range: Nisin is effective against many Gram-positive bacteria that cause food spoilage, such as Cl... |
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Imported ε-Polylysine hydrochloride,From China |
ε-Polylysine hydrochloride is considered safe for consumption in small quantities. It is a natural substance that is easily broken down by ... |
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Nisin Manufacturer 25KG |
Fundamental Properties of NisinSource: Biosynthesized by Lactococcus lactis during fermentation (e.g., in the production of cheese or fermented mil... |
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