RESIDUES OF LAMBDA-CYHALOTHRIN IN /ON ORANGE FRUITS AND ITS EFFECT ON SOME QUALITY PROPERTIES | ||||
| Menoufia Journal of Plant Protection | ||||
| Article 3, Volume 4, Issue 2, April 2019, Page 55-63 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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