Akdeniz University, Faculty of Agriculture, Department of Agricultural Biotechnology, 07058 Antalya, Turkey.
Giresun University, Şebinkarahisar Feyzi Kıraç School of Applied Sciences, Food Technology Department, 28400 Giresun, Turkey.
Food Chem. 2021 Aug 30;354:129360. doi: 10.1016/j.foodchem.2021.129360. Epub 2021 Feb 26.
In this study, effects of low-intensity electrical currents (200, 800 and 1400 mA), ultrasound frequencies (24 and 40 kHz) and their combinations were applied at the duration period of 2, 4, 6, 8, and 10 min for the degradation of captan, thiamethoxam and metalaxyl residues in lettuce samples. Residues of the pesticides were determined by gas chromatography with tandem mass spectrometry and electron capture detector. The results indicated that the combination of low-intensity electrical current and ultrasound was found to be effective for the reduction of the pesticides. The most effective combination was obtained to be current of 1400 mA and ultrasound frequency of 24 kHz at 10 min. Under this circumstance, 92.57, 81.99 and 93.09% of captan, thiamethoxam and metalaxyl residues were decreased, respectively. The findings suggest that the combination of low-intensity electrical current and ultrasound applications has an important potential for the degradation of pesticide residues.
在本研究中，应用了低强度电流（200、800 和 1400 mA）、超声波频率（24 和 40 kHz）及其组合，持续时间为 2、4、6、8 和 10 分钟，以降解生菜样品中的克菌丹、噻虫嗪和甲霜灵残留。通过气相色谱-串联质谱和电子俘获检测器测定了农药残留量。结果表明，低强度电流和超声波的组合对降低农药残留是有效的。最有效的组合是在 10 分钟时使用 1400 mA 的电流和 24 kHz 的超声波频率。在此情况下，克菌丹、噻虫嗪和甲霜灵的残留量分别降低了 92.57%、81.99%和 93.09%。研究结果表明，低强度电流和超声波联合应用对农药残留的降解具有重要的潜力。
