THE DISTRIBUTION OF 9 PESTICIDES BETWEEN THE JUICE AND PULP OF CARROTS AND TOMATOES AFTER HOME PROCESSING

The distribution of nine pesticides between the juice and pulp of carr ots and tomatoes during home culinary practices was investigated. Toma to and carrot pulp contained a higher percentage of all pesticide resi dues, except for mancozeb in tomatoes. Although there was a difference in the relative distribution of the pesticides between the commoditie s with greater amounts present in the pulp of tomatoes, the pesticides followed a similar trend in both. A relationship between the pulp/jui ce distribution and water solubility of the pesticide was apparent. Pe sticides with the highest water solubility were present to a greater e xtent in the juice. An exception was noted in the case of diazinon and parathion, which were present in higher amounts in the pulp than thei r water solubility would suggest. The percent residue in the pulp rang ed from 56.4 to 75.2% for carrots, and 49.7 to 95.4% for tomatoes. Res idues in the juice prepared from washed commodities ranged from not de tected to 0.83 mu g/g. Washing of the produce removed more residue fro m carrots than from tomatoes, but it did not affect the relative distr ibution of the residues. The behaviour and fate of the chemical varied with the pesticide as well as the crop.