Document Details

Document Type : Article In Journal 
Document Title :
Residues of pirimiphos-methyl and fenitrothion in grapes, their effect on some quality properties and their dissipation during the removal and processing methods
متبقيات البيرموفوس والفنتروثيون فى العنب وتأثير ذلك على بعض خصائص الجودة واختفائهم خلال طرق الازالة والتصنيع
 
Document Language : English 
Abstract : Residues of pirimiphos_methyl and fenitrothion in grapes, their effect on some quality properties and their dissipation during the removal and processing Abstract: The persistence patterns of the two organophosphorus insecticides; pirimiphos_methyl and fenitrothion in leaves and fruits of grapes in relation to their effects on some internal quality properties were studied. In addition, the elimination of the two insecticide residues contaminating grapes through the use of washing or home processing methods was also investigated. The results showed that waiting period of 21 days after application on grapes is enough to reduce the pirimiphos_methyl or fenitrothion residues to below the maximum residue limits (MRL). However, pirimiphos_methyl appeared longer persistent with t ½ of 5.4 and 4.4 days than fenitrothion with t ½ 3.2 and 2.8 days for fruits and leaves, respectively. Results also showed that washing treated fruits with any of the tested washing of solutions removed considerable amounts of such residues. Blanching of grape leaves, removed 77.19% and ≈100% of the initial residues of pirimiphos_methyl and fenitrothion, respectively. Grape processing into raisins or juice caused almost complete residue reduction (≈100% removal for each insecticide). As for the internal quality parameters of grape fruits, the tested insecticides had significantly increased % soluble sugars. pirimiphos_methyl significantly increased % acidity, decreased pH of the grape juice and did not produce any significant effect on the % fatty acids. On the other hand, fenitrothion significantly decreased % acidity and also did not cause any effect on the tested fatty acids excpt linoleic acid in grape fruits which was increased 
ISSN : 1110-7308 
Journal Name : Journal of pest control and environmental sciences 
Volume : 9 
Issue Number : 3 
Publishing Year : 1422 AH
2001 AD 
Article Type : Article 
Added Date : Sunday, August 21, 2011 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
محمد حمد شيبوبShiboob, Mohamed HamadResearcherDoctoratemshiboob2010@hotmail.com

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