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El-Sheikh, A., Malhat, F., Rashwan, M., Shaker, N., Heikal, S. (2019). RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES. Menoufia Journal of Plant Protection, 4(2), 55-63. doi: 10.21608/mjapam.2019.117163
A. E. El-Sheikh; F. Malhat; M. H. Rashwan; N. Shaker; Sara M. Heikal. "RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES". Menoufia Journal of Plant Protection, 4, 2, 2019, 55-63. doi: 10.21608/mjapam.2019.117163
El-Sheikh, A., Malhat, F., Rashwan, M., Shaker, N., Heikal, S. (2019). 'RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES', Menoufia Journal of Plant Protection, 4(2), pp. 55-63. doi: 10.21608/mjapam.2019.117163
El-Sheikh, A., Malhat, F., Rashwan, M., Shaker, N., Heikal, S. RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES. Menoufia Journal of Plant Protection, 2019; 4(2): 55-63. doi: 10.21608/mjapam.2019.117163

RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES

Article 3, Volume 4, Issue 2, April 2019, Page 55-63  XML PDF (311.27 K)
Document Type: Original Article
DOI: 10.21608/mjapam.2019.117163
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Authors
A. E. El-Sheikh1; F. Malhat2; M. H. Rashwan3; N. Shaker4; Sara M. Heikal1
1Pesticide Department, Faculty of Agriculture, Menoufia University, Egypt.
2Pesticide Residues and Environmental Pollution Department, Agricultural Research Center Dokki, Giza, Egypt
3Pesticide Department, Faculty of Agriculture, Menoufia University, Egypt
4Pesticide Chemistry Department, Faculty of Agriculture (El-Shatby), Alexandria University, Egypt.
Abstract
Pesticides are known to interfere with the biochemical processes of plants, lowering their food quality. Therefor, this study was designed to evaluate persistence of Lambda-cyhalothrin in / on fresh orange fruits and investigate its effect on fruit quality. The insecticide residues were determined using GC- ECD system. Also, the biochemical parameters were determined using spectrophotometric techniques. The results showed that a waiting period of 7days after application on orange is enough to reduce the Lambda-cyhalothrin residues to below the maximum residue limits (MRL). Lambda-cyhalothrin rapidly disappeared with half-life (t ½) of 1.6 days on orange fruits. Furthermore, the ascorbic acid content and dry matter percentage were significantly reduced however, total protein content, acidity (%), moisture(%) and total soluble solids (T.S.S,%) were significantly increased in  Lambda-cyhalothrin treated compared to untreated orange fruits.
Keywords
Orange; Lambda-cyhalothrin; quality properties; dissipation; Half-life
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