1, clear water soaking and washing method: rinse off the dirt on the surface of vegetables with clear water first, and then soak in clear water, but the soaking time is preferably not less than 10 minute. In this way, after washing and soaking twice, most of the residual pesticide components can be basically removed.

2. Adding soaking and washing AIDS: alkali (Suda), fruit and vegetable cleaning agent and rice washing water (preferably the first two times) can be added for soaking and washing. Soaking vegetables and fruits in this water for 5 to 15 minutes can remove organophosphorus pesticides on the surfaces of fruits and vegetables. Please pay attention to rinse thoroughly after soaking.

3. Storage method: Oxygen in the air can decompose some pesticides, so some fruits and vegetables that are easy to preserve can be reduced by extending storage time. For example, melons, pumpkins and other non-perishable vegetables can be stored for more than 3 days before eating.

4. Heating method: The decomposition of some pesticides will accelerate with the increase of temperature, so it can also help to remove pesticide residues. Such as green pepper, beans, celery, peas and so on. , you can wash it with clean water first, then put it in boiling water for 2 to 4 minutes, and then wash it with clean water 1 2 times.

5, peeling method: this is the most effective method, but only suitable for those vegetables with skin. Such as cucumbers, carrots, pumpkins, apples and so on. You can peel it off directly with a peeler.

How to remove pesticide residues from vegetables

1, peeling method

Although organophosphorus, organomercury and pyrethroid pesticides have low solubility in water, they are easily soluble in organic solvents or waxy liquids, while there are a lot of waxes on the surface of vegetables, which are easy to adsorb pesticides. Therefore, cucumbers, loofahs, pumpkins and other vegetables that can be peeled should be peeled before eating.

2, running water washing and soaking washing method

Generally, vegetables should be washed with clean water for 3 ~ 4 times after being bought, and then soaked in clean water for 1-2 hours before washing. Washing with running water is the basic method to remove dirt and pesticide residues from vegetables and fruits, especially leafy vegetables such as spinach, green vegetables, lettuce and Chinese cabbage. For cabbage vegetables, 1-2 leaves on the surface can be removed first, then cut and washed with clear water for 2-3 times, then soaked in clear water for 1-2 hours and then washed to remove residual pesticides. (Running water washing and soaking washing should not be reversed, otherwise the pesticides left on the surface of leaves will penetrate into plant cells and tissues during soaking. )

3, alkaline water immersion method

Organophosphorus pesticides decompose rapidly in alkaline environment, so this method is an effective measure to remove pesticide pollution and can be used in various vegetables and fruits. The method is to put a pinch of baking soda in water, stir it evenly, then add vegetables, soak it for 15 minutes, then pour out the alkaline water and rinse it with clear water.

4. Heating method

With the increase of temperature, the decomposition of carbamate pesticides is accelerated, so for some vegetables and fruits that are difficult to be treated by other methods, some pesticides can be removed by heating, such as cabbage (water spinach), green vegetables, celery, cauliflower, beans and so on. The method is to clean the dirt on the surface with clear water first, and then put it in boiling water for 2 ~ 3 minutes to take it out. After testing, it can remove more than 80% of residual pesticides.

In addition, you can also soak vegetables in rice washing water 10 minutes or so, and then rinse them with clean water.