The initial method of washing vegetables can reduce pesticide residues
Washing dishes seems to be the most common time in the cooking process. It is also the contact we have every day. It seems to be ordinary. In fact, we face different kinds of vegetables and possible pesticide residues. How can we clean vegetables with proper methods?And supplement to reduce the pesticide residues in it?
It has been reported that washing vegetables with salt water and baking soda can remove pesticide residues. Therefore, experts told reporters that repeated washing with water can also remove pesticide residues in vegetables, but do not soak for longer.The better, at the same time, the types of vegetables suitable for cleaning such as baking soda and rice water are also different.
銆€銆€Light salt water soluble formaldehyde and pesticide residues Dong Jinshi, secretary general of the International Food Packaging Association, can choose to use light salt water to wash vegetables.
Regarding the concentration of light salt water, it is similar to the concentration of light salt water that we usually use for mouthwash.
Regarding the length of time for washing vegetables, Dong Jinshi said that it can be soaked in light salt water for 3-5 minutes, then rinsed with water.
The reason why the method of washing vegetables with light salt water is worth recommending, Dong Jinshi explained, first of all, mixed with water, the light salt water itself has a bactericidal effect.
銆€銆€In addition, the light salt water penetrates into the solubility of formaldehyde and can dissolve formaldehyde residues that may be present in vegetables.
Dong Jinshi also said that it is actually only vegetables. New clothes that have just been bought can also be soaked in light salt water to remove formaldehyde residues that may be contained.
Finally, some vegetables may contain pesticide residues, which can be soaked in light salt water to dissolve these substances and reduce the possible pesticide residues in vegetables.
銆€銆€After washing the rice water for a certain period of time, it is better to wash the vegetables. It is also advisable to wash the vegetables with baking soda or rice water. This is because the baking soda and the rice water are alkaline, which can avoid harmful substances in vegetables.Purpose”, but for the choice of Taomi Shui, Dong Jinshi suggested that the water that has just been scoured rice is basically not very obvious. The effect of washing vegetables after fermentation will be better, so if it is for washing vegetables, try not to use Amoy immediately.Rice water can be placed, because the rice water will be fermented during the placement process, the viscosity will become larger and larger, and the alkalinity will increase.
In addition, Taomi water itself has a certain viscosity, can absorb some pesticides and chemicals attached to the surface of food, remove vegetables, is also more effective for the cleaning of some fruits, including grapes, mulberry, strawberries and other fruits that are not easy to clean, useTaomi water is also safer.
銆€銆€Flour water decomposition of pesticides is inferior to Taomi water. The use of flour water can remove the pesticide residues of vegetables. Dong Jinshi said that it is also advisable to use flour to wash vegetables, but it is necessary to remind that, with rice water, the alkalinity of flour waterA little lower, the ability to decompose pesticide residues will be slightly lower, especially for the decomposition of phosphorus-containing pesticides, and rice water can usually decompose some phosphorus-containing pesticides and reduce their toxicity.
銆€銆€Fruit and vegetable cleaning agents are better than rice water but have poor safety. Fruit and vegetable cleaning agents are also the choice for many people to clean vegetables.
The reporter learned that among the fruit and vegetable cleaning agents currently on the market, a large number of products indicate that their natural salt, surfactants, and some substances are pure natural. After high-temperature processing and refining, they can remove pesticide residues on the surface of fruits, vegetables and other ingredients.Bacteria, polishes and colorants.
Can fruit and vegetable cleaning agents remove pesticide residues from vegetables while ensuring safety?
Therefore, Dong Jinshi told reporters that it is advisable to wash vegetables with fruit and vegetable cleaning agents. If the quality of the cleaning agent can be guaranteed, the washing effect will generally be better than that of rice water.
However, it should be noted that some fruit and vegetable cleaning agents contain chemical components, and sometimes the safety is relatively poor compared with the above several methods.
銆€銆€Hot water can also go to pesticide residues. National secondary public nutritionist Li Guangping suggested that for some vegetables that can be used with hot water, you should choose to use hot water, which is a good method for pesticide residues.
銆€銆€Usually, it is more difficult to clean and plant vegetables that may use pesticides. Instead of the above methods, it can effectively remove mud from vegetables, pesticide residues, etc., such as cauliflower, etc., and for some skins that are smoother and easier to clean, such asPotatoes, tomatoes, etc., there is no need to take these methods.
銆€銆€Experts suggest that repeated washing or peeling of water is also safe to remove pesticide residues in vegetables. Li Guangping suggested that experiments show that repeated washing of water can effectively remove pesticide residues in vegetables.
In addition, the use of salt water, baking soda, flour water and rice water can more effectively remove the problem of pesticide residues in vegetables. Li Guangping said that through experiments, it was repeatedly washed with water, these methods are actually removing vegetables.In terms of pesticide residues, each has its own characteristics and cannot be generalized.
銆€銆€Li Guangping explained that taking cucumber as an example, it is more effective to wash cucumber in the spring with baking soda to remove pesticide residues. However, it should be noted that this method is not applicable to all vegetable types because of the pesticides that may be contained in different vegetables.The residue is not the same. Taking cowpea as an example, the effect of washing with baking soda is actually not obvious in cucumber, so it is difficult to generalize the method of demonstration more effectively, and one problem that cannot be tolerated is that in summer, due to the high temperature, the flourWater and rice water itself are also prone to microbial growth. In general, the repeated washing and peeling of water is a good choice.
銆€銆€Mistakes in washing vegetables 脳 The longer the soaking in clear water, the better the soaking time is too long or the nitrite content is increased. 鈥淚n fact, when washing vegetables, if you use cold water for soaking, the pesticide residues in vegetables generally contain formaldehyde or other chemicals, and mayDissolved in water.
If you use hot water for soaking, the temperature is too high, it may destroy the vitamins contained in vegetables, causing nutrient loss,” Dong Jinshi told reporters.
銆€銆€Soaking in water is a good method to remove pesticide residues in vegetables. Generally speaking, it is more suitable to soak for about 10 minutes, but the longer the soaking time, the better the effect of removing pesticide residues, especially in summer, due to high temperature.Some microbes may breed on the surface of vegetables, Li Guangping said.
銆€銆€In addition, some media reported that the vegetable soaking time is too long, and the nitrite content will also increase. Li Guangping told reporters that nitrite does increase the possibility, but this is not certain.
In fact, vegetables will be damaged before soaking, such as root removal, broken leaves, etc., causing the vegetables to be exposed to the air and contact with the air, which does lead to an increase in the nitrite content of the vegetables, but the vegetables are soaked in water.At the time, due to being in a relatively closed environment, it is not certain that the nitrite content will increase as the immersion time is prolonged.
銆€銆€脳Before cutting and washing, it is easier to make the section oxidized. Whether the loss of nutrients can remove pesticide residues more effectively after cutting and washing, Dong Jinshi said, instead, we do not recommend cutting the vegetables and then cleaning them, because after cutting,The cross section of the vegetable is in contact with the air and may be oxidized.
In addition, during the cleaning process, some pesticide residues may also adhere to the vegetable section, so it is more scientific to wash and cut.
銆€銆€Li Guangping also said that the practice of cutting and washing first is actually unscientific. It is recommended that the public should wash it first.
Because it will form a knife edge and other damage on the surface of the vegetable after cutting, the soaking will also lead to the loss of nutrients.