UV-C processing of bovine milk: Dosage requirements for 5-log bacterial reductions and impact on the bioactive proteins

Thermal treatments are typically applied to milk to ensure microbial safety but can cause degradation of some bioactive proteins. Ultraviolet-C (UV-C) irradiation is an alternative treatment that can increase microbial safety and may better preserve some bioactive proteins. However, the effect of UV-C doses validated to provide ≥5-log reduction of bacteria in bovine milk on the preservation of bioactive milk proteins remains unknown. We determined the UV-C dose (fluence) required for ≥5-log inac