Effect of Post-harvest and Washing Treatments on Pesticide Residues of Fenpropathrin, λ-cyhalothrin, and Deltamethrin Applied on Tomatoes Grown in an Open Field in Sudan

Abdala A. Elbashir ； Abuzar E. A. E. Albadri ； Hassan El-obid Ahmed

《Focusing on Modern Food Industry》 2卷2期 (2013/05) Pp. 103-109

並列摘要

In this study, controlled application of fenpropathrin, λ- cyhalothrin, and deltamethrin were carried out on tomato fruits grown in open field to study the reduction of their residues in harvest period and times of washing. The applied samples were collected immediately after application and after each 3 days up to 30 days, and then divided into same three groups in which the first was unwashed, the second washed once time by tap water and the last group was washed three times. Additionally, the control samples were collected before the application of tomato. The pesticide residues were analyzed by gas chromatography with electron capture detector (GC-ECD). Apre-harvest was observed safety for fenpropathrin after 27 days; 0.926 mg/kg, λ-cyhalothrin after 18days 0.467 mg/kg, and deltamethrin after 3 days 0.29 mg/kg less than of MRL recommended by Codex Alimentarius (FAO/WHO, 2009). The samples of tomato fruits was washed once time to reduce the residues of fenpropathrin, λ-cyhalothrin, and deltamethrin 37.363±0.44, 16.744±0.25, 26.881±0.31% respectively, and washing three times reduce the three pyrethroid residues 58.260±0.34, 39.659±0.41, 56.202±0.31 respectively.

並列關鍵字

Fenpropathrin ； λ-cyhalothrin ； Deltamethrin ； Tomato ； GC-ECD