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It is well known that broccoli is green in color, but if it is not eaten for a long time or not stored properly, it will turn yellow, so can you eat broccoli after yellowing? What causes broccoli to turn yellow? Let's take a look.
Broccoli. 1 What causes broccoli to turn yellow.
The reason why broccoli turns yellow is very simple, that is, long-term non-consumption will lead to the loss of water in broccoli, and because long-term storage will make broccoli unable to contact sunlight, some chlorophyll can not be produced, so it will appear yellow.
2 Can you still eat broccoli when it turns yellow.
You can eat it. In fact, only the nutrients in the body are lost after the broccoli turns yellow, and the other parts are not broken, although the appearance of the yellowing may make many people feel that the quality is not good, in fact, there is no difference in taste, but the nutrition is not as good as the broccoli that has not turned yellow.
3 How to keep broccoli without yellowing.
1. Blanch and preserve.
After boiling water in a pot, add an appropriate amount of salt, then add the cleaned broccoli to the boiling water, blanch the water, remove it, soak it in cold water, and drain it, and then add the drained broccoli to the fresh-keeping bag in turn and put it in the refrigerator for preservation, which can well maintain the broccoli without discoloration, but it should be eaten as soon as possible.
2. Store in the refrigerator.
Refrigerator preservation is a method used for most ingredients, broccoli is no exception, if you want broccoli not to spoil, you can add fresh broccoli to the crisper bag and then put it in the refrigerator to keep it at least three days without changing color.
3. Paper wrapping and preservation.
Wrap the broccoli in a relatively clean newspaper or paper, and then spray water evenly on the broccoli, which can be stored for about three days after being evenly damp, and should also be eaten as soon as possible to prevent spoilage.
4. Store in a cool and dry manner.
This method of preservation is very time-sensitive, and can only keep the broccoli from turning yellow for a day. First, remove the dead leaves of the broccoli and place it in a ventilated and shady place, preferably in the corner of the balcony, where the dry climate will keep the broccoli from turning yellow when eaten the next day.
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Many people like to buy a lot of vegetables and put them in the refrigerator to keep them fresh, and they can take a little food out when cooking, so as to avoid the trouble of buying vegetables on the street every day, which saves time and trouble. However, some dishes are often left in the refrigerator for a long time, and when they are taken out, they will turn yellow and dry, and they feel a pity when they are thrown away. Among them, broccoli is an example, broccoli is very easy to turn yellow, so can the broccoli continue to be eaten after yellowing?
1. Why does broccoli turn yellow? Because of the long period of storage, the broccoli cannot get sunlight, so it will not produce the green color of the leaves. However, the broccoli will gradually disappear from the nutrients, so don't eat it.
Broccoli turns yellow because it can't turn green without being exposed to light and producing chlorophyll, so it's yellow. Also because it is not fresh, the rape that I just bought is bright in color, and it turns yellow after a few days, that is to say, it is old, and the vitamins and minerals that maintain the color are lost. Therefore, the broccoli turns yellow, and it should not be eaten at the end.
2. In addition, it is said that the yellowing of broccoli will produce a large number of nitrite carcinogens that are harmful to the human body, so it is best not to eat it. In addition, it is best to buy fresh broccoli, buy it and try to eat it all, if it is left for too long and turns yellow, it is a pity that you can only throw it away, the broccoli that has turned yellow has lost its nutrients, there is no need to eat it.
3. Yellowed broccoli actually does not change much in taste, many people choose broccoli because of its high nutrition, to make a simple analogy, the difference between fresh broccoli and yellowed broccoli is like a human **, but one is infancy, one is old age. It is recommended that if you find that the broccoli at home has turned yellow, quickly take it out and soak it in water for a period of time, so that it may be able to restore a little green, and put it in boiling water for a while before eating, which can prevent the food from being stacked for too long and decomposing some toxic substances.
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Hello, you can eat broccoli if it's a little yellow. The broccoli itself is green, and when the color turns yellow, it will make the consumer feel that the quality is not good. In fact, the yellowing of broccoli is caused by the loss of magnesium ions contained in chlorophyll due to dehydration of the surface during storage.
Resemble. However, yellow broccoli does not change much from green broccoli in terms of taste and nutrition, and does not affect consumption. After ingesting yellow broccoli, it can still supplement dietary fiber and various vitamins, which helps to maintain the normal growth of the body.
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Broccoli can still be eaten even if it is yellow.
Broccoli as a vegetable that everyone often eats, we are all familiar with broccoli, sometimes many of us will love to eat broccoli, and generally speaking, the broccoli we see is green, it looks very tender. The broccoli that turns yellow is not actually spoiled, but because of a drying phenomenon caused by the dehydration of the surface of the broccoli during the process of placement. This does not affect the nutrients in the broccoli flower, nor does it affect the taste.
It may be that in the process of storage, the moisture on the surface of broccoli gradually evaporates, and the skin is dehydrated and causes dryness. But wash the broccoli when eating, because the broccoli is prone to lettuce insects, so soak the cauliflower in salt water for a few minutes when eating.
How to store fresh broccoli:
1. Ventilation storage method. Store broccoli directly in a cool, ventilated place for two or three days.
2. Refrigerator refrigeration method. Put it in a plastic bag and store it in the refrigerator for a week.
3. Blanching and storage method. Blanch the broccoli quickly with boiling water, drain the broccoli thoroughly, put it into a sealed bag in turn without overlapping, drain the air, and then wrap it in a fresh-keeping bag, put it in the refrigerator or freeze, so that the broccoli can be stored for more than a month, and it is easy to take when eating.
4. Alcohol preservation method is a difference. Broccoli can be wrapped in kitchen paper and stored upright in the refrigerator for about a week. You can also spray a small amount of alcohol on the paper.
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Broccoli can still be eaten after it turns yellow.
The yellowing is due to the drying phenomenon caused by the dehydration of the surface of the broccoli during the placement process. You can choose to soak the broccoli in water for more than half an hour, and the yellow part will gradually turn green again. Broccoli is a very nutritious food, rich in vitamin C, vitamin A, and carbohydrates.
Just boil the broccoli in hot water and you will find that the yellow color of the broccoli dissipates a bit and turns green. Therefore, proper handling of broccoli can maximize the retention of some of the nutrients of broccoli.
Broccoli, like other cabbage vegetables, is a cold vegetable. The suitable temperature for seed germination is 20-25, the lowest is 4-8, and the highest is 35; The plant growth temperature is 15-22, the lowest is 5, the highest is 25. Too high or too low a temperature can cause poor plant growth.
How broccoli is preserved
1. Blanching preservation: add an appropriate amount of salt after boiling water in the pot, then add the cleaned broccoli to boiling water, blanch the water, take it out, soak it in cold water and drain it, and then add the drained broccoli to the fresh-keeping bag and put it in the refrigerator for preservation, which can well maintain the broccoli without discoloration, but it should be eaten as soon as possible.
2. Refrigerator preservation: Refrigerator preservation is a method used by most ingredients, broccoli is no exception, if you want broccoli not to deteriorate, you can add fresh broccoli to the fresh-keeping bag and then put it in the refrigerator for refrigeration, which or keep it like a bucket can ensure that the broccoli does not change color for at least three days.
3. Paper wrapping preservation: wrap the broccoli in relatively clean newspaper or paper, and then spray water evenly on the broccoli, which can be stored for about three days after being evenly damp, and should be eaten as soon as possible to prevent deterioration.
4. Cool and dry preservation: The timeliness of this preservation method is very short, and it can only maintain the broccoli for one day without yellowing. First of all, remove the dead leaves of the broccoli and place it in a ventilated and shady place, preferably in the corner of the balcony, because the dry climate will keep the broccoli from turning yellow when it is eaten and milled the next day.
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Broccoli is yellow, and if it is not rotten, it can be eaten.
In fact, the yellowing of cauliflower has no effect on the consumption of cauliflower, as long as you boil the cauliflower in hot water, you will find that the yellow color of the cauliflower dissipates a little and turns green. Therefore, proper treatment of cauliflower can retain part of the nutrients of cauliflower to the greatest extent, so that the nutrition of cauliflower can be retained to the greatest extent.
Ways to prevent broccoli from turning yellow1. Use newspaper to wrap, because after the broccoli is put in the refrigerator, it itself has a respiration effect, which makes the broccoli more and more humid, if you add newspaper to preserve, it can absorb a part of the water, so that it is not easy to cause deterioration, and the color will not be yellow.
2. Use plastic wrap to wrap, this practice is mainly to reduce the breathing intensity of broccoli, and completely wrap the broccoli with plastic wrap, so that there is a lack of oxygen inside, which will cause a decrease in breathing, and will also extend its shelf life, which can be stored for about a week.
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Yes, the yellowing of broccoli may be caused by the gradual evaporation of water during storage, and if it does not deteriorate, it can generally be eaten without destroying the nutrients in it.
The broccoli recipe is as follows:
Ingredients: 1 broccoli, 1/2 carrot, 1/2 garlic.
Excipients: appropriate amount of salt, appropriate amount of chicken essence.
Steps: 1. Wash and chop the broccoli, carrots and garlic.
2. Add oil to the pan and stir-fry the minced garlic until fragrant.
3. Pour in broccoli and carrots and stir-fry until browned.
4. Add salt and chicken essence to taste.
5. Serve on a plate.
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Broccoli, also known as broccoli, has a high nutritional value, regular consumption of broccoli can play an anti-cancer role, and broccoli yellow can still be eaten, in fact, broccoli yellow is edible, but its nutritional value and efficacy will be greatly reduced, so when we buy broccoli, do not store it for a long time, because it is advisable to eat it as soon as possible.
In ordinary life, everyone has the habit of hoarding, and broccoli will be stored for a long time will cause its moisture loss, so that it will gradually turn yellow, reduce the nutritional value, so can the yellowed broccoli be edible, broccoli is edible, but it is not as fresh as it tastes, and the nutritional value is not fresh.
1. Blanch and preserve.
When buying broccoli, clean the broccoli and put it in boiling water, put an appropriate amount of salt to blanch, and finally take it out and soak it in cold water and then drain it, and then seal it in plastic wrap and store it in the refrigerator, which can make the broccoli not change color, but this method can only last for 4 days.
2. Moisturizing and preserving
You can wrap the broccoli in plastic wrap, and then spray a layer of water on top of the Yuzi plastic wrap to moisturize it, and then put it in the refrigerator, which can also make it not yellow, but this method can only last for a week, so it is advisable to eat broccoli as soon as possible when buying it.
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Categories: Life >> Food Cooking.
Problem description: After buying broccoli and leaving it for a long time, it turns yellow. Can I still eat it?
Analysis: Food Introduction] Broccoli is also called broccoli. They evolved from kale and originated on the Mediterranean coast of Europe and are ranked fourth in Time magazine's top 10 health foods.
Nutritional efficacy】 Broccoli contains antioxidant and anti-cancer trace elements, and long-term consumption can reduce the incidence of cancers such as breast cancer, rectal cancer and stomach cancer. According to the American Cancer Society, among many vegetables and fruits, broccoli and Chinese cabbage have the best anti-cancer effect. Broccoli is one of the foods that contain the most flavonoids.
In addition to preventing infection, flavonoids are also the best blood vessel cleaners, preventing cholesterol oxidation and platelets from clotting, thus reducing the risk of heart disease and stroke. Some people's ** will become blue and purple once they are hit by a small bump and injury, and this is because of the lack of vitamin K in the body. The best way to supplement is to eat more broccoli.
Eating more cauliflower will also strengthen the blood vessel wall and make it less likely to rupture. The rich vitamin C content makes cauliflower enhance the liver's ability to detoxify, and can improve the body's immunity, which can prevent the occurrence of colds and scurvy.
Suitable for the public, there is no special taboo. 70 g per meal.
Special tip] Chew more times when eating, so that it is more conducive to the absorption of nutrients. Don't overcook it.
Healthy traffic light] Although broccoli is rich in nutrients, it often has residual pesticides and is easy to lettuce insects, so before eating, you can soak the co-flowers in salt water for a few minutes, and the cabbage insects will run out, which can also help remove residual pesticides.
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