  natamycin (inn), also known as pimaricin and sometimes sold as natacyn, is a naturally occurring antifungal agent produced during fermentation by the bacterium streptomyces natalensis, commonly found in soil. natamycin has a very low solubility in water; however, natamycin is effective at very low levels. there is an mic (minimum inhibitory concentration) of less than 10&nbsp;ppm for most molds. natamycin is classified as a macrolide polyene antifungal and, as a drug, is used to treat
Antifungals Preservatives