Sonolytic degradation kinetics and mechanisms of antibiotics in water and cow milk.

ABSTRACT: Antibiotics (ABX) residues frequently occurred in water and cow milk. This work aims to understand the kinetics and mechanisms of sonolytic degradation of four ABX, i.e. ceftiofur hydrochloride (CEF), sulfamonomethoxine sodium (SMM), marbofloxacin (MAR), and oxytetracycline (OTC) in water and milk. In both water and milk, the sonolytic degradation of ABX follows pseudo-first order (PFO) kinetics well (R²: 0.951-0.999), with significantly faster ABX degradation in water (PFO kinetics constants (k₁): 1.5 × 10^-3-1.2 × 10^-1 min^-1) than in milk (k₁: 3.5 × 10^-4-5.6 × 10^-2 min^-1). The k₁ values for SMM degradation in water increased by 118% with ultrasonic frequency (40-120 kHz), 174% wit

SUBMITTER: Liu P 

PROVIDER: S-EPMC10433014 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature