RESIDUAL BEHAVIOUR OF SPIROMESIFEN, QUINOLPHOS, MONOCROTOPHOS, CARBENDIZAM AND ACEPHATE IN OKRA (ABELMOSHUS ESCULENTUS) AND THEIR DECONTAMINATION USING HOUSE HOLD PROCESSES
Field experiments were conducted at Agricultural University, Rajendra Nagar, Hyderabad, Telanagana to study the dissipation kinetics of Carbendizam, Monocrotophos, Spiromesifen, Acephate and Quinalphos in okra fruit. All the pesticide residues with one test dose at two spray i.e., first spray at flowering stage and second spray after an interval of ten days was carried out. The samples drawn at specific periods were analyzed by liquid chromatography and mass spectrophotometry (LC-MS/MS). The initial deposit of Carbendizam, Monocrotophos, Spiromesifen, Acephate and Quinalphos in okra was found to be 2.239, 2.586, 2.401, 1.39, 0.78 mg/kg respectively. More than 98 % of Caebendizam, Spirofesifin, Acephate and Quinolphos dissipated after 15 days and monocrotophos was dissipated after 10 days. These results are helpful in setting up maximum residual limit (MRLs) of these pesticides in okra in India. A decontamination study was conducted to evaluate quality of okra pods by reducing the residues of Carbendizam, Monocrotophos, Spiromesifen, Acephate and Quinalphos by using different processes such as 2% salt solution, Acetic acid, Biowash, Butter milk, Cooking, Drying, Formula1(T7), Frying, Lemon water, Sodium bicarbonate, Tamarind water and Tap Water. From the results, it could be recommended that cooking suits best for almost all of the pesticide residues. Sodium bicarbonate and 2% salt solution are the best methods for decontamination after cooking. The decontamination values of Frying and formula 1 seems to be almost same. After these two methods biowash thought to be the method of choice.
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