Aqueous ozone solutions for pesticide removal from potatoes

作者：Heleno Fernanda F; de Queiroz Maria Eliana L R^*; Faroni Leda R A; Neves Antonio A; de Oliveira Andre F; Costa Luiz P L; Pimenta Gustavo G

来源：Food Science and Technology International, 2016, 22(8): 752-758.

DOI：10.1177/1082013216651179

• Potatoes
• Solanum tuberosum
• chlorothalonil
• ozonated water
• degradation
• quality

The presence of pesticide residues in potatoes is of concern because of the potential impact to human health due to the high consumption of this vegetable. In this study, aqueous solutions with and without ozone saturation as postharvest wash treatment at pH 4.0, 7.0, and 9.0 were tested to remove chlorothalonil from potatoes. The method used for pesticide analysis has been validated, presenting recovery values of 94-103%, with variations in the repeatability coefficients of 10.6%, and a quantification limit of 0.05mg kg(-1). Regardless of pH, treatment with aqueous ozone solutions removed 70-76% of the pesticide present in the potato. In the no-ozone treatments, the percentage average removal of chlorothalonil residues in potatoes was only 36%. Over 24 days of storage, the quality of potatoes washed with aqueous ozone solutions was not significantly different from those washed with pure water.

• 出版日期2016-12