Heating method to remove topical pesticides - How to remove residual pesticides from vegetables?

The main types of pesticides that contaminate vegetables are organophosphorus pesticides. Organophosphorus pesticides are poorly soluble in water, and this method can only remove locally contaminated pesticides. But washing is the basic method to remove other dirt and pesticide residues on vegetables and fruits. Mainly used for leafy vegetables, such as spinach, daylily, leek flowers, lettuce, Chinese cabbage, etc.

Heating method to remove topical pesticides - How to remove residual pesticides from vegetables?

How to remove pesticide residues from vegetables?

heating method

As the temperature increases, the synthesis of carbamate pesticides accelerates. Therefore, some vegetables and fruits that are difficult to treat by other methods can be heated to remove some pesticides. Commonly used in celery, spinach, bok choy, cabbage, green peppers, cauliflower, beans, etc. The method is to first wash the surface dirt with clean water, put it in boiling water for 2-5 minutes, fish it out, and then rinse it with clean water 1-2 times.

Alkaline water soaking method

Organophosphorus pesticides are synthesized quickly in alkaline environments, so this method is an effective method to remove pesticide contamination and 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 5-10 grams of alkaline solution is added to 500 ml of water) for 5-15 minutes, and then rinse with clean water 3-5 times.

Storage method

Pesticides are slowly synthesized into harmless substances in the environment over time. Therefore, storing fruits and vegetables that are easy to store for a certain period of time can reduce the amount of pesticide residues. This method is suitable for apples, kiwis, winter melons and other non-perishable varieties. Ordinary storage is more than 15 days. Be careful not to eat freshly picked, unpeeled fruits immediately.

Soaking and washing method

The main types of pesticides that contaminate vegetables are organophosphorus pesticides. Organophosphorus pesticides are poorly soluble in water, and this method can only remove locally contaminated pesticides. But washing is the basic method to remove other dirt and pesticide residues on vegetables and fruits. Mainly used for leafy vegetables, such as spinach, daylily, leek flowers, lettuce, Chinese cabbage, etc.

First rinse the surface dirt with water, then soak it in clean water for no less than 10 minutes. Fruit and vegetable cleaning agents can promote the dissolution of pesticides, so a small amount of fruit and vegetable cleaning agents can be added during soaking. After soaking, rinse with clean water 2-3 times.