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Effect of Processing on Pesticide Residues in Food Crops

Effect of Processing on Pesticide Residues in Food Crops

Effect of Processing on Pesticide Residues in Food

ong>Processingong> effect on pesticide residues in food crops 379EFFECT OF PROCESSING ON PESTICIDE RESIDUESIN FOOD CROPS - A REVIEWAnwaar Ahmed*, Muhammad Atif Randhawa**, Muhammad Javed Yusuf***and Naeem Khalid****ABSTRACTThe use ong>ofong> pesticides is inevitable to control the pests in different crops, fruitsand vegetable plants. It is increasing day by day in Pakistan. The persistent useong>ofong> pesticides leaves behind toxic residues on food crops. These pesticidesupon ingestion exert adverse effects on human health, in addition to disturbingecosystem. The organochlorine, organophosphorus, carbamates andpyrethroid pesticides have been detected in samples ong>ofong> fruits and vegetablescollected from various locations ong>ofong> the world especially in Indo-Pakistan. Mostong>ofong> the samples contained toxic residues exceeding maximum residues limits.Experiments have been carried out to determine the reduction in pesticideresidues due to various processing techniques like washing, peeling, frying,freezing and cooking ong>ofong> fruits and vegetables. Likewise treatment ong>ofong> food cropswith acidic or alkaline solution also minimized the pesticide residues. Thispaper reviews the literature published upto the year 2009 focusing on theinjurious effects ong>ofong> pesticides and their degradation by processing andchemical treatment. In this literature, it is suggested that different processingoperations can be effectively applied on fruits and vegetables to minimize therisk ong>ofong> pesticides on human health.KEYWORDS: Pesticides; residues; food crops; toxicity; Pakistan.INTRODUCTIONIn Pakistan, crop losses are very alarming which are estimated as 30-40percent pre-harvest, 10-30 percent post harvest and 50 percent crop lossesare due to insects, weeds, diseases and rodents (21) In order to safeguardagricultural produce from ravage ong>ofong> pests, use ong>ofong> pesticides is considered as*Assistant Prong>ofong>essor, Department ong>ofong> Food Technology, Pir Mehr Ali Shah AridAgriculture University, Rawalpindi, Pakistan, **Assistant Prong>ofong>essor, National Institute ong>ofong>Food Science & Technology, University ong>ofong> Agriculture, Faisalabad, ***Assistant Botanist,Fodder Research Institute, Sargodha, Pakistan, ****Deputy Secretary (Planning),Department ong>ofong> Agriculture, Govt. ong>ofong> Punjab, Lahore, Pakistan.J. Agric. Res., 2011, 49(3)

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