DESCRIPTION

Nisin A Preparation occurs as a white, free-flowing powder. It is a mixture of closely related polypeptides produced by strains of the Lactococcuslactis subsp. lactis in an appropriate growth medium. Nisin A in the fermentation broth can be recovered by various methods, such as injecting sterile, compressed air (froth concentration), acidification, salting out, and spray-drying. The product comprises Nisin A and sodium chloride that is adjusted to an activity level of not less than 900 IU/mg by the addition of sodium chloride.