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Article Title

Removal of methamidophos and carbofuran residue in broccoli during freezing processing

Abstract

Broccoli harvested 10 days after being sprayed with 50% methamidophos (0.8 and 1.2 l/ha) and 3% carbofuran (40 and 60 kg/ha) was used to study the extent to which pesticide residues could be removed by freezing processing. Results indicated that a 3-min washing process can remove 44.1 and 32.8% of the high and low doses of sprayed methamidophos, and 33.7 and 34.3% of the high and low doses of sprayed carbofuran, respectively. Blanching in 2% brine at 95°C for 3 min removed 99.3-100% methamidophos and 95.6-96.2% carbofuran and ensured acceptable and satisfactory broccoli quality. During five months of frozen storage, 50% of the methamidophos and almost none of the carbofuran degraded in the thawed samples.

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