The Influence Of The Processing Of Honey In Several Harmful Drugs And Study Of The Removal Process

The effect of different steps in honey production on methyl-parathion, parathion, sulfamethazine (SM2) and sulfaquinoxaline (SQX) levels are investigated. The removal effect of the harmful drugs on the macroporous adsorption resin and cation exchange resin are also studied. The content of this article consisted of five chapters, and the author’s work are in the following four aspects.1. Methyl-parathion and parathion residues in honey are quantified by gas chromatography with flame photometric detection (GC-FPD) after each stage including preheating, filtration, vacuum concentration and pasteurization. The total loss of methyl-parathion and parathion in honey are about52.3%and19.5%, respectively. Among these four stages, vacuum concentration just had the significant effects on methyl-parathion levels but not parathion, and the mean losses were30.2%and9.2%, respectively.2. Thermodynamic properties of adsorption of methyl-parathion and parathion in honey by LSA-21macroporous adsorption resin were investigated using static adsorption method. Equilibrium data were obtained from the adsorption of methyl-parathion and parathion in honey at298.15K,308.15K and318.15K, respectively and correlated with Freundlich type of isotherm equation. Freundlich adsorption isotherms and isosteric enthalpy of adsorption indicate that the processes of adsorption of methyl-parathion and parathion by LSA-21resin are an exothermic process.△G<0indicates the spontaneous nature of the adsorption process.3. sulfamethazine (SM2) and sulfaquinoxaline (SQX) residues in honey are quantified by high performance liquid chromatography with diode array detection (HPLC-DAD) after each stage including preheating, filtration, vacuum concentration and pasteurization. The total losses of SM2and SQX in honey are about55.1%and46.6%, respectively. Among these four stages, filtration had the significant effects on SM2and SQX levels, and the mean losses were36.7%and31.2%, respectively.4. Using a static equilibrium method, the adsorptive thermodynamics of SM2and SQX in honey by732cation exchange resin were investigated at298.15K,308.15K and318.15K, respectively. The results indicated that the adsorption isotherms of SM2and SQX were well described by the Freundlich type. Freundlich adsorption isotherms and isosteric enthalpy of adsorption indicate that the processes of adsorption of SM2and SQX by732cation exchange resin are an exothermic process. AG<0indicates the spontaneous nature of the adsorption process.