Is it scientific to chop vegetables and then wash them?

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Generally, first rinse off the surface dirt with water, and then soak it in water for no less than 10 minutes. For the vegetables, first cut them open, soak them in water for 1-2 hours, and then rinse them with water to eliminate residues. pesticide. It is better to add a small amount of detergent or fruit and vegetable cleaner when soaking. However, because some pesticides have a very strong penetration ability, they are even on the roots, especially leeks. Therefore, washing with soaking water may wash away the pesticides remaining on the surface of the vegetables, but it cannot do anything to the pesticides that have penetrated into the interior of the vegetables. Organophosphorus pesticides decompose rapidly in an alkaline environment, so this method is an effective measure to remove pesticide pollution. Can be used for all kinds of vegetables and fruits. The method is to first rinse the surface dirt, soak it in alkaline water (usually 5 to 10 grams of alkaline surface is added to 500 ml of water) for 5 to 15 minutes, and then rinse it with clean water 3 to 5 times. LEPO Vegetable Chopper
LEPO Vegetable Chopper, Onion Chopper, Mandolin Slicer, 23 in 1 Fruit Food Chopper Vegetable Spiral Chopper Egg Slicer Egg Separator Salad Vegetable Chopper with 1.7L Container, Lid and One Gloves

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