Galacin Natamycin 201 is a natural food antifungal product made by fermentation of Streptomyces natalensis, mixed with sodium chloride as the carrier. It is used to protect a wide range of food products against yeasts and molds.

Natamycin works by binding to ergosterol in the fungal cell membrane, disrupting its integrity and preventing fungal growth. Unlike many chemical antifungal agents, natamycin has no effect on bacteria, making it ideal for use in fermented products where beneficial bacterial cultures need to remain active. The sodium chloride carrier makes this formulation particularly well-suited for surface treatment and brine incorporation in cheese, cured meats, and other products where salt is already part of the formulation.