Abstract: In order to study the effect of processing methods on tebuconazole residues in fresh daylily, the effect of different processing methods (washing, blanching, soaking, washing-blanching-soaking) on the removal of tebuconazole residues in fresh daylily was investigated by immersion test of tebuconazole residue and simulated processing in the laboratory using ultra-performance liquid chromatography-tandem mass spectrometry (UPLCMS/MS) detection. The results showed that the concentration of tebuconazole was positively correlated with the removal rate when treated with washing, blanching and soaking alone, and the higher the tebuconazole residue,
the higher the removal rate and the more obvious the removal effect. There was a positive correlation between
the treatment time and the removal rate of tebuconazole residue, which was the removal rate increased with the
increasing of time. Among the three treatment methods, blanching had the highest removal rate and the best
removal effect on tebuconazole in daylily, and the removal rate was up to 83.05% with 7 min of blanching. During
the period of 0-3 min of washing time, 0-3 min of blanching time and 0-30 min of soaking time, the removal rate
had a high change range and the fastest removal rate. After that, the change range of removal rate became slow
and tended to be stable. It was suggested that the processing flow of fresh daylily was as follows: washing for 3
min, then blanching for 3 min and then soaking for 30 min. |