Table 1.
Effect of different wash treatments on removing of chlorpyrifos from date fruits
| Wash treatment | Contact time (min) | |||||||
|---|---|---|---|---|---|---|---|---|
| 5 | 15 | 30 | 60 | |||||
| Chlorpyrifos levels (μg/kg) | Remove (%) | Chlorpyrifos levels (μg/kg) | Remove (%) | Chlorpyrifos levels (μg/kg) | Remove (%) | Chlorpyrifos levels (μg/kg) | Remove (%) | |
| Chlorpyrifos (T1) | 32.9 ± 2.20aH | – | 32.8 ± 4.55aF | – | 32.7 ± 3.11aF | – | 32.2 ± 4.87aG | – |
| Chlorpyrifos+ Running water (T2) | 20.7 ± 1.50bG | 37.08 | 18.9 ± 2.18aE | 42.54 | 15.8 ± 1.53aE | 51.77 | 15.5 ± 2.23aF | 51.93 |
| Chlorpyrifos+ 1 % Acetic acid (T3) | 6.2 ± 0.63cB | 81.12 | 3.6 ± 0.21bB | 88.91 | 2.6 ± 0.25bB | 91.93 | 0.51 ± 0.10aAB | 98.42 |
| Chlorpyrifos+ 2 % Acetic acid (T4) | 4.2 ± 0.21cA | 87.23 | 2.2 ± 0.27bA | 93.36 | 0.27 ± 0.11aA | 99.17 | 0.16 ± 0.05aA | 99.5 |
| Chlorpyrifos+ 1 % Citric acid (T5) | 9.1 ± 0.76cC | 72.46 | 6.9 ± 0.22bC | 78.85 | 3.1 ± 0.27aB | 90.43 | 2.5 ± 0.34aC | 92.33 |
| Chlorpyrifos+ 2 % Citric acid (T6) | 7.3 ± 0.99cB | 77.81 | 5.2 ± 0.85bB | 84.12 | 2.5 ± 0.44aB | 92.39 | 1.34 ± 0.35aBC | 95.84 |
| Chlorpyrifos+ 1 % H2O2 (T7) | 17.3 ± 2.53bF | 47.33 | 8.6 ± 1.05aD | 73.79 | 7.8 ± 0.68aD | 76.30 | 7.2 ± 1.23aE | 77.80 |
| Chlorpyrifos+ 2 % H2O2 (T8) | 13.2 ± 3.11bE | 59.82 | 6.7 ± 1.50aC | 79.55 | 6.0 ± 0.87aC | 81.56 | 5.1 ± 1.01aD | 84.13 |
| Chlorpyrifos+ 1 % KMnO4 (9) | 12 ± 1.21cE | 63.56 | 9.7 ± 1.06bD | 70.34 | 8.4 ± 1.22aD | 74.40 | 8.0 ± 1.02aE | 75.16 |
| Chlorpyrifos+ 2 % KMnO4 (T10) | 10.2 ± 0.67cD | 68.97 | 8.8 ± 0.67bD | 73.12 | 5.3 ± 0.90aC | 83.67 | 5.2 ± 3.54aD | 83.79 |
Each value is the mean ± S.D of three replicates with 6 determinations
Means having different letter in a row (or column) are significantly different (P < 0.05)