Can saltwater soak vegetables remove pesticide residues

It must be possible to remove some of it, but it is impossible to completely remove it.

Many people are worried about pesticide residues in fruits and vegetables bought in the market, so they soak them before eating.

People always like to add a little salt when rinsing vegetables and fruits, thinking that salt can kill bacteria, and naturally can also remove pesticides left on the skin. Does this actually work?

Salt is the king of all flavors and is one of the most commonly used condiments by people. If you don't add salt to your cooking or coleslaw, you're in for a treat. In addition to seasoning, salt also has an insecticidal effect, killing mollusks (insects) with mucus such as slugs, snails, and leeches.

However, Tadpole Jun wants to tell you that there is no scientific basis for the claim that "salt water can effectively remove pesticides". Because the chemical composition of salt is relatively stable and does not easily react with other chemical components, even if a certain amount of salt is added to the water to soak fruits and vegetables, the actual effect is mainly water.

Therefore, the truth is that repeated rinsing with water can effectively remove pesticide residues from vegetables. There are many experiments on the Internet about salt water, washing salt water, baking soda water, flour water and rice washing water, etc., and the more people look at it, the more dizzy they become. However, the fact is that these methods have their own characteristics in removing pesticide residues, and the experimental environment is affected by various factors such as temperature, humidity and instruments, so it cannot be generalized.

There are many experiments on the Internet about various ways to remove pesticide residues.

The experimental equipment and environment are also different.

In fact, if you want to clean pesticide residues on the surface of fruits and vegetables, the easiest way is as follows:

1. Alkaline water

Most pesticides are acidic, and soaking them in alkaline water can neutralize the reaction, and the effect of removing pesticide residues in vegetables is better. Therefore, one of the easiest ways to clean pesticide residues in fruits and vegetables is to use edible alkali. The specific method is to add a pinch of alkaline noodles to the clean water, soak the vegetables for about 5 10 minutes after it is dissolved, and then rinse it with water to process or eat it directly.

2. Rice washing water

At present, most of the vegetable farmers and fruit farmers use organophosphorus pesticides and chloroformate pesticides, which are commonly used pesticides when they encounter alkaline solutions, and generally lose most of their toxicity quickly, while the rice water is weakly alkaline and can play a detoxifying role. If the uncut vegetables, melons and fruits are soaked in rice washing water for a few minutes, and then rinsed with water, most of the pesticide residues on the surface of vegetables and melons and fruits can be removed or rejected.

Rice washing water can not only decontaminate and disinfect, but also save water.

3. Clear water

In fact, there are strict national standards for pesticide residues on the surface of fruits and vegetables, so the fruits and vegetables that are normally sold can be eaten as long as they are carefully cleaned with water, and there is no need to be too nervous.

Tadpole-kun thinks that the most important thing is to eat fruits happily!

(We would like to thank the Beijing Food Society for their help with this article.) If you have any questions or rumors about food health that need to be answered, please be sure to tell Tadpole, and Tadpole will invite authoritative experts to solve your doubts scientifically as soon as possible. ）

How to reduce pesticide residues in vegetables, vegetables contaminated by pesticides or pesticide residues exceeding the national standards shall not be marketed and shall not be eaten. How to reduce pesticide residues in vegetables? Although in the past two years due to food safety has received widespread attention, such as the prohibition of the use of highly toxic pesticides, pollution-free vegetable area is expanding, but there is a gap in the understanding of some areas, the development is unbalanced, coupled with the complexity and uncommon detection of pesticide residues, some pesticides exceed the standard vegetables are also mixed into the market, and the general consumers do not know, so some simple methods are proposed to reduce the pesticide residue pollution of vegetables on the market after harvesting is effective.

Pesticide residues in vegetables.

Methods for reducing pesticide residues in vegetables:

a) Immersion method.

Rinse the purchased vegetables with water 2-3 times and soak them in clean water for 1-2 hours to remove pesticides from the remaining surface. You can also add a small amount of dish soap to water and soak it for 10 minutes, which can transfer most of the pesticides on the surface to the dish soap solution. After soaking, rinse with water 2-3 times.

2) Alkaline water immersion.

Many organophosphorus pesticides decompose easily in alkaline environments. The method is to put a small spoon of baking soda in the water, then put the vegetables and fruits into the soak for 15 minutes, remove them and wash them with water.

c) Peeling method.

Some organophosphorus, organomercury and pyrethroid pesticides have low solubility in water, but are easily soluble in organic solvents or waxy solvents, while melons and fruits vegetables have wax and are easy to absorb pesticides, so they should be peeled and eaten again.

4) Heating method.

With the increase of temperature, methyl aminoester pesticides can accelerate decomposition, and pesticides can be removed by heating method, by cleaning the surface of vegetables first and then blanching them in boiling water for 2-5 minutes, and removing more than 90% of the residual pesticides.

5) Acid immersion method.

Most pesticides and insecticides such as methamidophos, dimethoate, etc., will lose their toxicity when exposed to acid, you can wash the vegetables first and then put a small amount of sour vinegar in the water, soak the vegetables for 10 minutes, remove and rinse, can reduce pesticide residues.

6) Pesticide residue detector.

CSY-N12 portable pesticide residue detector is an instrument specially designed according to the national standard method --- rapid test card method (paper method). It is mainly used for the rapid detection of organophosphorus and carbamate pesticides in fruits, vegetables, tea, grain, water and soil, especially for on-site law enforcement use of food safety testing institutions at all levels.

Some of them can be removed, but not all of them can be removed.

Bracketing vegetables in salt water does not remove pesticide residues. Although table salt has a certain sterilization and disinfection effect, for specific pesticide residues, salt water soaking can only play a certain dissolving role, and the dissolution effect is very limited, and it cannot reach the point of effective removal. And, for leafy greens, salt water can damage the cell membranes of the leaves.

Not only is it a loss of nutrients, but it is more likely that pesticide residues will enter the dish.

Methods for removing pesticide residues.

Usually wash vegetables and fruits at home, it is best to soak them in warm water (do not soak them for a long time, so as not to seep harmful substances into the vegetables and fruits), the temperature does not need to be too high, 40 degrees is appropriate, that is, the hand will not feel hot when you reach in, because the water is too hot will destroy the nutrients in the vegetables and fruits.

The taste of the food will not be good. After soaking in warm water, try to rinse several times with running water to remove most of the pesticide residues on fruits and vegetables.

Hello, salt water can not go to pesticides.

Ways to remove pesticides:

1. Water soaking washing method.

Generally, rinse off the surface dirt with clean water, remove the visible stained parts, and then cover the fruits and vegetables with water about 5 cm, and soak them in running water for no less than 30 minutes. If necessary, cleaning agents such as fruit and vegetable lotions can be added to increase the dissolution of pesticides.

Soak 2-3 times in this way, basically remove most of the residual pesticide components.

2. Alkaline water immersion cleaning method.

Most organophosphorus insecticides can decompose rapidly in an alkaline environment, so soaking in alkaline water is one of the effective ways to remove pesticide pollution from vegetables and fruits. Generally, 5-10 grams of edible alkali are added to 500 ml of water to prepare alkaline water, and the fruits and vegetables after preliminary rinsing are placed in alkaline water, according to the amount of vegetables with enough alkaline water, soaked for 5-15 minutes and then rinsed with water, and the effect is better for about 3 times of repeated washing.

3. Heating cooking method.

Because carbamate insecticides will accelerate the decomposition of the temperature as the temperature increases, some residual pesticides can be removed by heating some fruits and vegetables that are difficult to treat by other methods. Generally, the washed fruits and vegetables are placed in boiling water for 2-5 minutes, then removed immediately, and then washed with water 1-2 times and then placed in a pot to cook into dishes.

4. Cleaning and peeling method.

For fruits and vegetables with skin, such as apples, pears, kiwifruit, cucumbers, carrots, winter melons, pumpkins, eggplants, turnips, tomatoes, etc., the appearance of residual pesticides can be peeled off with a sharp instrument, and the fleshy part can be eaten, which is both delicious and safe.

5. Preservation and custody law.

Some pesticides slowly decompose over time into substances that are not harmful to humans during storage. Therefore, when conditions permit, some fruits suitable for storage and storage should be purchased and stored for a period of time (about 10-15 days). Wash and peel before eating for better results.

According to expert research, soaking in salt water does not help in any way to remove pesticides, and baking soda can only target acidic pesticides. If you want to completely remove pesticide residues, in fact, a fruit and vegetable cleaning machine can solve the problem.

Summary. 4. Salt water cleaning method.

For formaldehyde and pesticide residues, you can choose to use lightly salted water to wash vegetables. As for the concentration of saline water, it is similar to the concentration of saline water that we usually use for gargling.

Regarding the length of time to wash the vegetables, you can soak them in lightly salted water for 3-5 minutes and then rinse them with clean water. The reason why the method of washing vegetables in light salt water is worth recommending, because compared with clean water, light salt water itself has a bactericidal effect. At the same time, the solubility of light salt water to formaldehyde is large, which can dissolve the formaldehyde residues that may exist in vegetables.

Can saltwater soak vegetables remove pesticide residues

Hello, I have seen your question and am sorting out the answer, please wait a while

4. Salt water cleaning method For formaldehyde and pesticide residues, you can choose to use light salt water to wash vegetables. As for the concentration of saline water, it is similar to the concentration of saline water that we usually use for gargling. Regarding the length of time to wash the vegetables, you can soak them in lightly salted water for 3-5 minutes, and then rent or rinse them with clean water.

The reason why the method of washing the consuming vegetables in light salt water is worth recommending, because compared with clean water, light salt water itself has a bactericidal effect. At the same time, the solubility of light salt water to formaldehyde is larger, which can dissolve the formaldehyde residues that may exist in vegetables.

Hello, you can.

If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your like, your efforts are very important to me, and your support is also the driving force for my progress. If you feel that I am satisfied with the answer of Fu Lu, you can click on my avatar for one-on-one consultation. Finally, I wish you good health and a good mood!