Which yolk is nutritious for eggs? Dark? Light?

There are red and white eggs, which one is more nutritious? Do you know all about it?

Egg yolk is also a part of the nutrients in eggs, and the main minerals, vitamins, phospholipids, etc. in eggs are in egg yolks. The main components of egg yolk are protein, fat, about 48% water and 2% minerals, as well as a variety of vitamins.

The vast majority of the fat in eggs is concentrated in the yolk. The fat in egg yolk is dominated by monounsaturated fatty acids, more than half of which is the main ingredient in olive oil, oleic acid, which is beneficial for preventing heart disease.

Vitamins are also mostly concentrated in egg yolks. Egg yolks contain valuable vitamins A and D, as well as vitamin E and K, which are "fat-soluble vitamins". The water-soluble B vitamins are also mostly found in egg yolks.

The reason why the egg yolk is light yellow is because it contains riboflavin, which is vitamin B2, which can prevent rotten corners of the mouth, glossitis, cleft lips, etc.

Various trace elements are also concentrated in the egg yolk. Egg yolk has a lot of phosphorus and a lot of iron, and all the lecithin in eggs comes from the yolk, and lecithin can provide choline to help synthesize an important neurotransmitter - acetylcholine. Therefore, the first complementary food for babies is often egg yolk.

Egg yolk is good for iron supplementation in children, and it is also good for children's brain development. The lutein and zeaxanthin contained in egg yolk can also help the eyes filter harmful ultraviolet rays, delay eye aging, and prevent eye diseases such as macular degeneration and cataracts.

It's good to be shallow.

The color of the egg yolk depends on the amount of pigment in the egg yolk. When eggs are formed in the body, fat-soluble pigments are deposited around the egg cells along with substances such as fat, providing the color of the egg yolk, and lutein is a representative of this. Lutein is a carotenoid, which cannot be produced by animals themselves, and can only be obtained through the food chain, so the color of the egg yolk is ** chicken food.

Therefore, by adding Sudan dyes to the feed, you can obtain a redder egg yolk.

The value of eggs.

Eggs contain more vitamin B2, which can break down and oxidize carcinogens in the human body. The trace elements in eggs, such as selenium and zinc, also have anti-cancer effects. Based on an analysis of human cancer mortality worldwide, it was found that cancer mortality is inversely proportional to selenium intake.

The protein in eggs has a repair effect on liver tissue damage, and the lecithin in egg yolk promotes the regeneration of liver cells. It can also increase the amount of plasma protein in the human body and enhance the body's metabolic function and immune function.

The above content refers to Encyclopedia - Eggs.

People's Daily Online-The darker the egg yolk, the better? Don't fall into the mistake of eating eggs.

Is there any way to turn egg yolk red?

First of all, egg yolk is rich in vitamins, trace elements, glycogen, egg yolk lecithin, as well as lutein and carotenoids, and it is carotenoids that can color egg yolk, and carotenoids are synthesized through vitamin A, so in daily life, we can add some cod liver oil, electrolytic multi-vitamin, Chinese animal milk Jinwei, etc. to supplement, in order to improve the height and color of egg yolk, you can also add some chili powder, chili meal, pine needle powder, allicin to improve.

1. The formation of egg yolk color largely depends on the food that the chicken eats. If there is more yellow-orange pigment in the chicken feed, the yolk will be darker, and the color of the yolk will be very different between wheat-fed chickens and rice-fed chickens. The color of the egg yolk is darker, and it tends to be orange and yellow, mainly because of the free-range breeding method of the chicken, so that the chicken can get more food containing lutein from the outside world, and the egg yolk is more yellow.

2. Although artificial coloring is not allowed to be added to chicken feed, some farmers will add some carotene-rich foods such as carrots or chrysanthemum petals to chicken feed in order to make the egg yolk darker. Some eggs with reddish yolks may have red bell peppers or paprika added to the chicken feed.

3. The color of the egg yolk does not have much to do with the taste of the egg. The study found that the protein and fat content of light yellow and orange egg yolks were not very different, and conversely, the darker the egg yolk, the higher the vitamin content and lower cholesterol content.

3. In terms of the composition of eggs, there is not much nutritional difference between yellow eggs and white eggs. Scientists analyzed and found that there is not much difference between yellow eggs and white eggs in terms of protein and other trace elements, so the impact may be on taste, but there is not much fundamental difference in nutrition, and there is no substantial difference between the two in terms of composition alone.

In general, in people's cognition, white eggs are farm-raised eggs, so they are more nutritious than feed-fed yellow eggs, but with the expansion of the scale of native chicken breeding, there is not much difference between the two, and in scientific research and analysis, it is found that there is no difference in the nutritional content of white eggs and yellow eggs.

Scientific studies have shown that there is basically no difference in nutrition between yellow eggs and white eggs, but there is a difference in taste.

There is actually no nutritional difference between yellow eggs and white eggs, as both are foods with relatively high protein content.

There is no difference in nutrition, just that the types of chickens that produce eggs are different.

The general egg yolk should be orange and yellow, which is better.

However, different chickens, different feeds, and eggs are different in color, which is normal and has nothing to do with nutrition.

The color of the egg yolk mainly depends on the chicken's food. The pigments of egg yolk are mainly lutein and a small amount of carotene. Among them, lutein is a plant ingredient that cannot be synthesized by the chicken itself and can only be obtained from what it eats every day.

If the hen eats more corn and cereals, the egg yolk will contain more lutein and the color will be more yellow. If the hen eats more grass, the grass is rich in carotene, and the yolk is mostly orange-red.

The color of the egg yolk is closely related to the feed of the chickens. If the feed contains more green leaves or yellow corn, the carotenoids contained in it will be absorbed into the egg yolk.

As early as twenty or thirty years ago, some people took advantage of this law to add carotenoids to chicken feed, making the egg yolk bright and beautiful, and loved by consumers. This practice is not harmful to health and is even beneficial.

Nowadays, it is infuriating that people use toxic chemical dyes to enhance the color of egg yolks. However, consumers do not need to choke on food, and dark yellow egg yolks that are not contaminated by chemical dyes are still good foods for health.

Egg yolk contains DHA, choline, lecithin and a variety of trace elements necessary for the development of the baby's brain and nervous system, and is an important nutritious food for infants in addition to breast milk.

Generally golden yellow to orange.

The color of the egg yolk is generally related to the feed that the chicken eats. In general, the color of the egg yolk is generally golden to orange, and sometimes it has a reddish tinge. However, if the egg yolk is too red, you should also pay attention to whether too much gallic red has been added to the feed.

Decorative red is a carotenoid. In general, there are rules for its addition. The allowable dosage is no more than 30 grams per ton of feed. If you add too much, the egg yolk will turn red within a few days.

The darker the color of the egg yolk, it does not mean that it is more nutritious. Because he has been studied by scientists, the nutritional value of the two colors of egg yolk is the same. There has always been a misconception about such things, thinking that the nutritional value of dark-colored egg yolks is higher than that of light-colored egg yolks, but in fact this is not the case.

It has been found that the reason why the dark egg yolk is different from the ordinary egg yolk is that the chicken eats a lot of dark substances when eating, which leads to the accumulation of pigments, which then makes the egg yolk very dark. And the light color of the yolk of the chicken's eggs proves that the food he eats is normal food, which is the normal feed given to them through breeding.

First, the problem of the difference in the color of the egg yolk Some people think that the light color of the egg yolk is because the chickens are bred by people as a whole, and the chicken feed given to them is the nutrition given to them by the farm, and there is no gap. And those dark egg yolks are because the chickens are free-range, and then they may eat other foods in the course of life, and eating other foods will make their egg yolks darker because they contain some lutein. Of course, there are also farms, in order to make the color of the eggs darker, specially used several special ingredients, two, the difference in the color of the egg yolk There must be some gaps between the two different colors of egg yolks, but the gap is not as obvious as people say, and there will be no particularly big gap in nutrition. Dark-colored egg yolks will be higher in vitamins and less cholesterol. Some people buy a lot of deep yolk eggs in pursuit of these factors.

Some supermarkets even separate these two kinds of eggs, and eggs with dark yolks have to be bought instead.

But if people want the nutrition of eggs, they can buy either of the two, but don't fall into ** in order to pursue nutrition too much.

The dark color of egg yolk is due to the rich content of lutein in food, and lutein helps protect eyesight, so it can be said that the nutrition is slightly higher. However, lutein is widely found in spinach, zucchini, corn, olives, grapes, kiwifruit, and citrus.

This statement is false. The pigment deposited in the egg yolk is mainly in the feed, the pigment in the yellow corn is one of the main pigments in the egg yolk, the higher the egg production of chickens, the greater the amount of pigment required, therefore, with the increase of egg laying period and egg production, the color of the egg yolk gradually becomes lighter.

Normally, the pigments in egg yolk are carotenoids, which are mainly luteins containing hydroxyl groups and a small amount of carotene. But theoretically, the color of the egg yolk can be artificially changed, and any fat-soluble pigment can change the color of the egg yolk. Danish scholars using different colors of carrots, American scholars using pure pigments and other studies have proved that the color of egg yolk can be artificially adjusted.

To put it simply, feeding yellow corn, alfalfa, marigolds, kale, greens, carrots, tomatoes, red peppers and other feeds can deepen the color of egg yolks. Of course, there are also vendors who add illegal coloring to darken the color of the egg yolk.

The color of egg yolk is related to the pigment it contains, and the pigment of egg yolk is mainly lutein and a small amount of carotene. Among them, lutein is a plant ingredient that cannot be synthesized by chickens themselves and can only be obtained from the diet (food).

Free-range chickens usually live in the wild, and can eat greens, weeds, insects and artificially fed corn containing various pigments, and the food is rich in lutein, so its egg yolk is darker.

The food of caged laying hens is mainly feed, and the lutein in feed raw materials such as corn and corn gluten meal is prone to oxidation, and with the extension of storage time, its lutein content will gradually decrease. There are also some feed ingredients that are inherently low in lutein, such as wheat, barley, rice and their by-products. If these feeds account for a high proportion of the hen's diet, the yolk will become lighter in color, almost whitish.

In addition, the breed and age of the chicken will also affect the color of the egg yolk. In general, the yolk color of eggs laid by commercial laying hens with high egg production performance is lighter than that of local breeds with low egg laying performance.

Generally speaking, the egg yolk is deep, generally stupid eggs, but now some unscrupulous traders feed Sudan dyes to chickens, and the egg yolk is dark in color, so when choosing, you should pay attention to the fact that the egg yolk color of stupid eggs is dark and yellow, and the egg yolk color of the eggs that have been fed Sudan red and under it should be dark and red.

The darker egg yolk is better than the lighter one.