Abstract

MONTTI, María I et al. Incidencia de la carga inicial de pesticidas en fruta sobre los niveles residuales en aceites esenciales cítricos. Cienc. docencia tecnol. [online]. 2013, n.47, pp.187-218. ISSN 1851-1716.

Citrus represent an important crop in Argentina. Pesticides are usually applied for disease control in orchard and packinghouses. The present study aimed to optimize different methods for pesticide residues analysis in citrus fruits and essential oils, and to determine the effect of the initial pesticide charge in fruits upon the essential oils obtained during the industrial process. The calibration was performed on spiked samples because of the occurrence of matrix effect. The suggested methods were found to be selective, precise, highly accurate and sensitive. The amount of residues observed in fresh fruit varied depending on the different lots and pesticides. The persistence in post washed fruit, polished and dewaxed oils were different for each pesticide. The partitioning in the wax phase may be the reason for the slight residue reduction observed in the dewaxed oils. Results showed that the initial pesticide charge in fruits is significant.

Keywords : Food technology; Pesticides; Citrics; Essential oils.

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