Molecular Formula:

C₁₄₃H₂₂₈O₃₇N₄₂S₇

Molecular Weight:

3348

Product code:

?China??/span> 17.019

?INS ??/span> 234

?CAS ??/span> 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

??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 121??/span> for 30mins at pH2; 47% of the activity remained after the treatment in 110??/span> for 30mins in nonfat milk in pH6.5; But the activity lost rapidly in 30 minutes at 63??/span> 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.