Many people say that frozen food is not nutritious, why?

The former is frozen at -18 (many people's refrigerators may not reach this temperature at all). This freezing speed is relatively fast. The rate of freezing has a direct impact on the size and number of ice crystals inside and outside the food cell.

Ice crystals formed by flash freezing are small and numerous, whereas ice crystals formed by slow freezing are large and few. When vegetables and fruits are picked, transported, and stored, their nutrients are constantly lost. Once the frozen fruits and vegetables are picked, they are frozen at -18, the respiration is almost stopped, and the activity of microorganisms is also inhibited.

In fact, it's more conducive to nutrient retention. Quick-frozen food should choose a supermarket with perfect and reliable freezing conditions, and should not choose a business that directly sells quick-frozen food at room temperature, do not deal with it in time when the temperature of the freezer becomes high, or even turn off the power of the freezer at night. Because the temperature slowly drops, moisture forms in the food"Ice crystals"。

As the temperature decreases, this kind"Ice crystals"It will grow larger and larger, easily destroying the cellular structure of food, leading to nutrient loss and poor taste. Meat is stored frozen at a lower temperature to better retain its nutrient content.

In particular, the content of proteins and minerals does not change. It can be said that compared with fresh meat, frozen meat does not lose much nutrition except for its poor taste. Too many ice crystals can break the cell membranes of food.

After the food is thawed, the juice will be lost, affecting the taste, flavor and nutrition of the food. Due to advances in processing technology, the nutrient loss caused by flash freezing is not significant. The nutritional value of some frozen fruits and vegetables will not be much different from the fresh fruits and vegetables purchased, and the quick-frozen preservation technology does not require the addition of preservatives.

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Because the nutritional value of quick-frozen food is very low, and it is not conducive to our health, nor is it conducive to our physical development, and quick-frozen food is very difficult to digest, so we must eat less quick-frozen food.

Because many people think that frozen foods are made by machine processing, and the proportion of meat in these foods is very small, so there is no nutrition.

This is because many nutrients are frozen and their structure is destroyed, and eventually their original effects are lost.

Frozen foods generally need to be pretreated by boiling, steaming or microwave to inactivate the enzymes in the food, thereby reducing the loss of flavor, color and nutrients in the food during storage. If you can eat it with confidence within the expiration date, the nutritional content will not be much different. Frozen vegetables and fruits do not lose much, they are at a certain freezing temperature, the respiration is stagnant, there will be no microbial reproduction, and the nutrients are retained.

Quick-frozen food is a food processed at a rapidly low temperature (below -18). According to China**.com, quick-freezing technology can maintain the color, taste, tissue and nutritional content of the product to the greatest extent, and is currently one of the best food preservation technologies in the world. In the process of freezing and refrigeration, some foods inevitably have nutritional loss.

In these two ways, the impact on proteins, carbohydrates, fats, trace elements, etc. in food is very small and almost negligible. But before freezing the processing or thawing process, a variety of water-soluble nutrients.

In fact, compared with fresh food, quick-frozen food is inferior in nutrition, but the statement that it is not nutritious is a bit exaggerated. Some of you may not understand what frozen food is. In recent years, because of the characteristics of high nutritional value, good hygiene, convenience and speed, frozen food is being accepted by people all over the world, especially in developing countries.

In terms of maintaining nutrition, it is currently the best way, compared with other ways of storing food, in addition to protein, not only fat will not change, but also including trace elements, macroelements, vitamins will be retained. Therefore, as long as you choose frozen food from regular manufacturers, some people say that quick-frozen dumplings and wontons are high in oil and salt, and eating them is not good for the body. That being said, it's true, but it's not just frozen food.

Basically, all mass-produced delicious foods will have this characteristic, as long as they are eaten reasonably, they will not bring too many health risks.

There is a certain amount of nutrition, but compared with homemade fresh staple foods, quick-frozen staple foods may have a certain discount in nutrition. Especially for some staple foods with fillings (such as vegetables, minced meat), some of the nutrients in the filling will be lost during processing; During transportation and storage, vitamins and other nutrients are also slowly decomposed. In addition, some quick-frozen staple foods will add more fat in order to maintain a good taste.

If you can, it's best to make your own fresh and healthy staple food at home. It is best to buy quick-frozen food as you eat, and if the amount of each consumption is not large, it is recommended to choose a small package.

Quick-frozen food is not without nutrients, but it loses more nutrients, and the taste will be slightly worse than fresh ingredients, but it can still ensure the nutritional needs of our human body.

The quick-freezing process is so fast that the food has not had time to react, and the freezing operation has been completed, so there is almost no great loss of nutrients. In some cases, the nutrient preservation rate of frozen fruits and vegetables may be higher than that of fresh fruits.

Frozen foods have some nutrients. Quick-frozen food is generally meat, and protein is not easy to lose at low temperatures.

I think it's not nutritious, and many quick-frozen foods are made food and then frozen and then packaged, but this feeling will produce a lot of bacteria, and the taste of the food will be greatly reduced.

It must be less nutritious than some fresh food, but frozen food is also nutritious, and secondly, this kind of quick-frozen food is really very convenient to make, suitable for our fast-paced era, I usually eat these frozen foods.

Personally, I think that the nutritional value of quick-frozen food is indeed relatively simple, but it cannot be denied that it is indeed nutritious. There are only a few types of nutrients.

Nutritious, but less nutritious, these foods are also made of vegetables and meat, and they also have a certain amount of nutrition, but most of the nutrients are lost.

I don't think that quick-frozen food is not nutritious, but the taste may not be as delicious as fresh food, but the nutritional combination in many frozen foods is also very comprehensive.

It's really not nutritious. No, because the nutrition of quick-frozen food has been destroyed before it is made, and the replay time is relatively long.

It is not nutritious, and the nutritional value of these foods is relatively low, and regular eating of quick-frozen foods will also cause harm to the body.

Personally, I don't think so, because some quick-frozen foods will choose quick-frozen in order to extend the shelf life, but they are also highly nutritious.

Any food will have no nutrition after being quick-frozen, such as quick-frozen dumplings, chaos, glutinous rice balls, Lantern Festival, and some vegetables cannot be quick-frozen.

Frozen seafood food, because seafood food is to be eaten fresh, is affected by low temperature, which is likely to lead to the loss of nutrients.

For example, there are chicken, pork, fish, and then seafood, then beef, mutton, duck, and some vegetables frozen by Sushifeng, as well as dumplings, buns, steamed buns, etc., and the nutrients will be lost.

Most fruits cannot be quick-frozen, and there is no nutrition after quick-freezing, and in addition, carbonated drinks cannot be quick-frozen and cannot be quick-frozen, which contains CO2

After the food is quick-frozen, it will not lead to the complete disappearance of nutrients, it will only be relatively reduced in taste, and the nutrients will be partially lost compared to fresh ingredients, and there is no essential difference in others.

The first is that most vegetable foods will lose their nutrients after being frozen for a long time, and secondly, some dairy products.

Heck, for example, once the fish and shrimp are affected by it, everything in it is lost, and it is not very good, and there is no nutrition.

Introduction: With the pace of people's life is getting faster and faster, so people's diet is becoming more and more abundant, and now there are many quick-frozen foods sold in supermarkets, which can be used for people to choose at this time. Let's find out.

<>First of all, each of us knows that quick-frozen products may be very low in nutrition, and many people have the impression that quick-frozen products are planned as unsafe, unhealthy and nutritious things, so in the eyes of many people, this product is not edible, and there may be some spoiled meat, so many people will not choose this food, and for healthy people, it is impossible to eat quick-frozen products. In fact, some pasta or some dumplings, they are not nutritious after freezing, and frozen food it also has its own shelf life, when we buy some quick-frozen food, we must look at the shelf life, pay attention to its date, so that it is safer to eat.

And we will find that some fresh meat is quick-frozen, the nutrition will be lost little by little, and when it has passed the expiration date, it will become an inedible meat, although there is no taste, but its essence is already inedible. In life, we all know that silkworm chrysalis is a high-protein food, when it is frozen, there is no nutrition, and crabs are also such seafood, they have no nutrition after freezing, and many shrimp will lose nutrition after freezing, so people must eat fresh when eating these foods, and the nutrition is relatively rich. Therefore, many people like to make dumplings, especially with the improvement of people's quality of life, every household has a refrigerator, and will wrap a lot of dumplings in the refrigerator, at this time if you want to eat it, take it out, in fact, the nutritional value of this food is very low, we have to eat some healthy food in life.

Silkworm pupae is a high-protein food, when it is frozen, there is no nutrition, and crabs are also such seafood, they have no nutrition after freezing, and many shrimp will lose nutrition after freezing.

For example, dumplings, vegetables, fruits, but also fish, shrimp, prepared meals, etc., are not particularly nutritious after freezing, so they should be eaten as soon as possible.

Some foods with mushrooms or foods that are high in calories, such as carrots, ravioli, noodles, dumplings, vegetables, corn, bean sprouts, etc.

Seafood, meat, frozen vegetables, and some staple foods cannot be frozen, and nutrients are lost after freezing.

The nutritional value of frozen foods is more or less, and not all frozen foods are low in nutrients. Because the nutritional value of frozen food also depends on how long the frozen food is frozen. However, most of the frozen foods are mostly frozen foods with low nutritional value.

Originally, most frozen foods are mostly frozen foods that have been frozen for many years, and the only frozen foods with nutritional value are frozen foods that have not been frozen. Because the nutritional value that has been lost overlaps with each other, the nutritional value that is left of them is not lost. However, the remaining nutritional value of these is only about 1 3 of all nutritional values.

Moreover, the remaining 1 3 nutritional value of the food, for all the nutrition of the food, it is the best nutritional state to buy directly from the place of origin, but the problem is that supermarkets usually pick the vegetables and fruits before they are ripe. This is also the reason why food merchants can avoid damage to vegetables and fruits in transit, but the farther these foods are from the place of origin, the more nutritional value is lost.

Quick-frozen food pursues the fastest food that can be used to fill the stomach, and the nutritional content is not as good as the food cooked at home, that's for sure.

Quick-frozen food has low nutritional value, high bacterial content, and contains harmful substances, which will cause stomach problems if you eat too much

1 Is it OK to eat frozen food regularly.

Eating quick-frozen food regularly has no harmful effect on the human body, as long as the quick-frozen food is regular and the quality is qualified, you can eat it with confidence. Many international health organizations, including the U.S. Food and Drug Administration, believe that quick-frozen foods can also be used as part of a healthy diet.

2 Are frozen foods nutritious.

Frozen foods are nutritious. Frozen meat is also nutritious because the protein and minerals do not change at low temperatures. Frozen fruits and vegetables are frozen after they are picked, and under low temperature conditions, the respiration of vegetables and fruits is almost stagnant, and microorganisms cannot multiply, which should theoretically be more conducive to nutrient retention.

3 Which is better, frozen food or fresh food.

There is not much difference between quick-frozen food and fresh food in terms of nutrition, and the preservation rate of vitamins and carotenoids in some frozen vegetables and fruits is higher. However, frozen meat will lose water due to long-term storage, and the taste is naturally not so tender. Therefore, whether to eat quick-frozen food or fresh food, you can choose according to your needs and preferences.

4 Tips.

Many food processing enterprises will put more oil and salt in order to taste good when processing food, so don't eat too much of quick-frozen dumplings, meatballs, snacks and other foods at a meal, otherwise it may cause excessive oil and salt intake.