Natamycin is a naturally occurring antifungal agent that is widely used in the food industry for its effectiveness against yeast and mold. It is also known by various synonyms that include pimaricin, natacyn, and natamycine among others. All of these terms refer to the same compound that is derived from the fermentation of Streptomyces natalensis. Natamycin is primarily used as a preservative in dairy products, baked goods, and meat products to extend their shelf life and prevent spoilage. Its effectiveness against fungal infections has also led to its use in the medical field, where it is marketed under the trade name Pimafucin.