Department of Food Science, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan, ROC.
School of Food Science and Environmental health, Technological University Dublin, Dublin, Ireland.
Food Res Int. 2021 Mar;141:110138. doi: 10.1016/j.foodres.2021.110138. Epub 2021 Jan 18.
Pesticide and agrochemical residues in food and water are among hazardous chemicals that are associated with adverse health effects. Consequently, technologies for pesticide abatement in food and water remain in focus. Cold plasma is an emerging decontamination technology, that is being increasingly explored for the abatement of agrochemical and pesticide residue in food and water. In some cases, rapid and complete degradation of pesticide residues has come to light. Such promising results encourage exploring scale-up and commercialization. To achieve this, unraveling mechanisms involved in plasma decontamination and the nature of degradation products is needed. The present review identifies the mechanisms involved in plasma- assisted removal of pesticide residues from food and water, draws parallels with mechanism of ozone and ultraviolet technologies, investigates the chemistry of the intermediates and degradates, and identifies some future research needs. The review recognizes that mechanisms involved in plasma processes have overlapping similarities to those identified for ozone and ultraviolet light, involving oxidation by hydroxyl radical and photo-oxidation. The toxicity of intermediates and degradates in plasma processing have not received much attention. The safety aspects of end products form plasma led degradation of pesticides should be considered for practical exploitation. Identification of intermediates and degradation products, recognition of most potent plasma species, understanding the influence of co-existing entities, the energy efficiency of plasma reactors, and the process economics deserve research focus.
食品和水中的农药和农用化学品残留是与不良健康影响相关的危险化学品之一。因此，用于减少食品和水中农药的技术仍然是关注的焦点。冷等离子体是一种新兴的净化技术，越来越多地被用于减少食品和水中的农用化学品和农药残留。在某些情况下，已经发现农药残留可以快速且完全降解。这些有前景的结果鼓励探索扩大规模和商业化。为了实现这一目标，需要揭示等离子体净化过程中涉及的机制以及降解产物的性质。本综述确定了等离子体辅助去除食品和水中农药残留的机制，与臭氧和紫外线技术的机制进行了比较，研究了中间体和降解物的化学性质，并确定了一些未来的研究需求。本综述认识到，等离子体过程中涉及的机制与臭氧和紫外线光中确定的机制有重叠的相似之处，涉及羟基自由基和光氧化的氧化作用。等离子体处理过程中中间体和降解物的毒性尚未受到太多关注。应考虑从实用角度利用等离子体引发的农药降解来评估最终产物的安全性。识别中间体和降解产物，识别最有效的等离子体物质，了解共存物质的影响，等离子体反应器的能量效率以及工艺经济性都值得研究关注。
