If you want to select foods with high nutritional value and affordable prices, then eggs are definitely on the list. According to statistics, eating a 50 grams of eggs can satisfy adult women's daily needs of 12% of protein, 11% of vitamin A, 6% of vitamin B1, 13% of vitamin B2, and 5% of zinc No wonder eggs have the reputation of "ideal nutrient bank".
But there are many kinds of eggs on the market, such as red eggs, white eggs, native eggs, black eggs... Is there any difference in their nutrition? Which one should we choose?
Red-skinned eggs, white-skinned eggs
There have been experiments to test the nutritional content of red-skinned eggs and white-skinned eggs. It was found that the protein content of red-skinned eggs was 0.75% lower than that of white-skinned eggs, while the fat content was higher. Around 1.4%. Does this mean that white eggs are more nutritious than red eggs?
Although there are differences in the nutritional content of the two eggs, but the difference is very small . Moreover, the color of eggshell is mainly related to chicken breeds, feed and other factors. For example, when there is no pigment deposition in the laying hen, the eggshell is white. If the blood metabolism in the chicken produces eggshell porphyrin precipitation, the eggshell will be It turns red, and these pigments of have basically no nutritional value to the human body .
So overall, no matter what color egg is, the nutritional value of is basically the same as .
native eggs, foreign eggs, black-brown eggs
native eggs, black-brown eggs are generally more expensive than foreign eggs, so some people think that these two kinds of eggs have higher nutritional value.
has been determined that among the three, soil eggs have relatively more protein, cholesterol, calcium, zinc, copper and other substances, but vitamin A, vitamin B2, and selenium are less. The fat content of black eggs is relatively the highest, and the protein content is relatively high. The two are basically the same, with a difference of less than 1 gram; while the various nutrients of foreign eggs are relatively even.
In addition, the native egg contains some flavor substances, which may taste better. However, seems to have the same nutritional value of the three eggs as a whole. The more expensive the price, the better the nutrition.
and , such as virgin eggs, DHA eggs, and other types of eggs, the difference in nutritional content is not significant .
Compared with varieties, the most important thing when choosing eggs for is actually two words-fresh . The fresher the egg, the smaller the loss of nutrients, the better the taste, the lower the risk of infection by pathogenic bacteria such as salmonella, and the higher the safety of .
3 tricks to help you judge the freshness of eggs
① Take a look: fresh egg shells have bright colors, obvious pores , and a layer of cream powder may be attached to the surface. When looking at the light, the smaller the air chamber of the egg, the fresher it is.
② Shake: Pick up the egg and shake it. There is basically no sound from , which means it is fresh egg . If there is a clear sound of water, it means it is an old egg.
③Peel and peel: For the cooked eggs, you can peel the shell to observe its freshness. After fresh eggs are cooked, the shell and the egg whites are tightly connected. Z4z is not easy to peel , and the air chamber is relatively small. The large end of the egg will not be dented too obviously .
Pick fresh eggs. After you buy them, do you put them in the refrigerator and you will be done? Dou Miaozi wants to tell you that if you want eggs to last longer, you must remember to do these few things before putting them in the refrigerator!
Wipe clean the surface
Some eggs are dirty on the surface, which may have dirt, chicken manure and other foreign objects. It is recommended that wipe the surface with a clean paper towel first to prevent bacteria and other microorganisms from invading the inside of the egg, and at the same time avoid contaminating the periphery of the refrigerator food.
But be careful, do not wash before storing eggs, otherwise the protective layer on the surface of the egg shell will be destroyed, and the shelf life of the eggs will be greatly shortened.
Set a fresh-keeping bag
To avoid cross-infection, it is recommended that use a fresh-keeping bag or fresh-keeping box to seal the eggs , and then put them in the refrigerator.
Keep away from "heavy taste" food
Egg storage position should be as far as possibleTo prevent volatile substances from entering the egg through the stomata, which will affect the taste of the egg and even accelerate the deterioration of the egg.
put the big end upright and stand upright
in order to make the eggs better breathe and avoid becoming sticky shell eggs, be sure to put the big head up, small head down, and upright when storing.
Generally speaking, under the condition of 2℃~5℃, the shelf life of eggs is about 30 days . However, in order to ensure the freshness of eggs, Dou Miaozi recommends that you buy for about a week at a time, and it is best not to stock up on large quantities of eggs . The different methods of
eggs have a great impact on their nutritional value. cooking eggs Due to the low cooking temperature, no oil, good nutrition preservation, etc., is the most recommended egg practice by experts.
Secondly, boiled poached eggs and egg drop soup belong to the B level in the "Egg Practice Nutrition Classification"; tender steamed eggs, sauteed poached eggs rank C level in terms of nutritional value; scrambled eggs, old fried poached eggs, Egg pancakes are classified as D-level because of the large amount of oil; fried egg corners, baked egg yolks , etc. are considered as worst practices for eggs .
However, although many people know that steamed eggs have good nutrition, they still prefer scrambled eggs and poached eggs in terms of taste and texture. With some practical tips, steamed eggs and boiled eggs can also be delicious.
Tips for cooking eggs
When cooking eggs, remember to use cold water pot , heat it over medium heat, and let the eggs and water heat up together. wait for the water to boil and then cook for 6-10 minutes. can be . At this time, the egg white is soft and the yolk is basically solidified, which is the "heart-boiled egg" that many people like. Z2z
Steamed Egg Tips
A little milk can be added to the egg mixture to increase nutrition and make the taste more tender. If you don’t like milk steamed eggs, you can also beat the eggs with broth for seasoning and freshness.
When steaming, it’s best to take a plate upside down and cover the custard to prevent the surface of the custard from forming honeycombs; after the water is boiled, change to medium or low heat and steam for 6-7 minutes; turn off the heat and continue to cover and simmer 5 Minutes about ; seasonings such as soy sauce and green onion are best to wait until steamed.
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