How to remove pesticide residues from vegetables? How to remove pesticide residues from vegetables

1.Peel 2Wash 3Caustic wash 4Wash with dish soap 56. with boiling waterSunlight.

Soak in water and wash method.

Water washing is the basic method of removing other dirt and removing residual pesticides on vegetables and fruits, mainly used for leafy vegetables, such as spinach, goldenrod, leek flowers, lettuce, cabbage, etc. Generally, the surface dirt is rinsed off with water first, and then soaked in water for no less than 10 minutes.

The pesticides polluted by vegetables and fruits are mainly organophosphorus insecticides, which are insoluble in water, and this method can only remove part of the polluted pesticides.

2> Alkaline water immersion method.

Organophosphate insecticides decompose rapidly in alkaline environments, so this method is an effective measure to remove pesticide contamination. It can be used for all kinds of vegetables and fruits. The method is to rinse the surface dirt first, soak it in alkaline water (generally add 5 to 10 grams of alkaline surface to 500 ml of water) for 5 to 15 minutes, and then rinse with water 3 to 5 times.

This method can only remove part of the pesticide residue, which will also cause secondary pollution.

3> peeling method.

The amount of pesticides on the surface of vegetables and fruits is relatively large, so peeling is a better way to remove residual pesticides. It can be used for apples, pears, kiwis, cucumbers, carrots, winter melons, pumpkins, zucchini, eggplants, turnips, etc.

The limitation of this method is that it can only effectively remove pesticides on the surface of melons and fruits, but there is no way to remove more vegetables. Similarly, the removed skin will cause further environmental pollution when it enters the environment.

4> heating method.

Carbamate insecticides decompose faster as the temperature increases. Therefore, some vegetables and fruits that are difficult to treat by other methods can be removed by heating. It is often used in celery, spinach, bok choy, cabbage, green pepper, cauliflower, beans, etc.

Wash the surface dirt with clean water, put it in boiling water for 2 to 5 minutes and remove it, then wash it with clean water.

One or two times. On the one hand, this method can only remove part of the pesticide residues, which will also cause secondary pollution; On the other hand, in the process of heating, a large amount of vitamins and other nutrients in vegetables and fruits will also be lost.

Exposure method. The multispectral effect in sunlight was used to decompose and destroy some pesticide residues in vegetables. It has been determined that fresh vegetables and fruits are exposed to the sun for 5 minutes, and the loss of organochlorine and organic mercury pesticide residues reaches 60%.

Generally, pesticide residues on vegetables can be removed by including but not limited to the following methods: 1. Soak and rinse with water. 2. Soak and clean with baking soda.

3. Blanch. Fourth, soak and clean the rice washing water. 5. Soak and clean in light salt water.

6. Peel off the skin of fruits and vegetables. Specific recommendations are selected or adjusted according to the type of vegetable and individual circumstances.

According to incomplete statistics, when people remove pesticide residues in vegetables, the more commonly used method is to soak in water and rinse, which can generally be washed off together with other dirt on vegetables while cleaning off pesticides.

Blanching the limbs with hot water to remove vegetables is more commonly used for some vegetables that need to retain the taste and original taste, such as broccoli, lettuce, coriander, celery, peppers, etc.

At present, most of the pesticides on the market are organic ingredients, and hot water, alkaline water, etc. can effectively decompose these pesticides to make them ineffective.