Product Description

Technical Data of the Product
Product Name:	WeiRi-Brand Nisin
Molecular Formula:	C143H228O37N42S7
Molecular Weight:	3348
Product code:	China: 17.019
	INS : 234
	CAS : 1414-45-5
Specification of Product
Program	Specification
Appearance	Off-white powder
Content (IU/mg)	≥ 1000
Moisture(%)	≤ 3
Heavy Metals (Pb) (mg/kg)	≤ 0.001
Heavy Metals (Pb) (mg/kg)	≤ 10
As(%)	≤ 0.0001
NaCl (%)	≥ 50
Count of Colony (cuf/g)	≤ 10
E. coli. (MPN/100g)	≤ 30
Salmonellae spp.	Absent in 25g
Stability	Nisin is most stable under acid conditions. It can keep the activity after the treatment at 121â„ƒ for 30mins at pH2; 47% of the activity remained after the treatment in 110â„ƒ for 30mins in nonfat milk in pH6.5; But the activity lost rapidly in 30 minutes at 63â„ƒ in pH 11.
Solubility	Nisin can be dissolved in aqueous solution, but is insoluble in non-polar solvents. The solubility decreases with the increase of pH, and it increases with the rise of temperature.

nisin(preservative)

Specifications