Development and Validation of a QuEChERS-Based LC–MSMS Method for Natamycin in Imported Agricultural Commodities in Korea

Natamycin is widely used in other countries for the postharvest treatment of agricultural commodities to prevent fungal growth. However, since no MRL has been set in Korea, natamycin residues are regulated under the Positive List System (PLS) with a uniform limit of 0.01 mg/kg, requiring the development of highly sensitive and reliable analyt- ical methods. In this study, a QuEChERS-based analytical method was developed and validated for the quantification of natamycin in five agricultural...