Oil of salted duck eggs
Where did it come from?
The reason why salted duck eggs can "flow oil" is inseparable from their composition.
salt out
Duck eggs are rich in protein and fat, and most of the fat in the whole duck eggs is in the yolk except for a small amount in the protein.
Moreover, there is some oil in the yolk, so the fat content in the yolk is very high. During the salting process of fresh eggs, salt invades the eggs, which can reduce the solubility of protein in water and precipitate protein. This process is called "salting out".
Protein, as an emulsifier, will slowly denature and solidify after salting out, so that those originally dispersed into tiny oil droplets will gather together with each other and become big oil droplets, that is, egg butter.
Therefore, after the salted duck eggs are cooked, the whole yolk becomes oily, and because the yolk contains red and yellow vitellin and carotene, the egg butter is red and yellow.
So much oil
It must be a fat bomb!
In a complete duck egg, the oil from the yolk is not added during curing. A duck egg weighs about 70 grams and contains about 9 grams of fat, including about 3 grams of saturated fat.
As a holiday snack, eat one a day occasionally, and the fat content is acceptable.
However, many snacks with salted egg yolk stuffing will add a lot of extra oil when frying the stuffing. When buying, you should pay attention to the nutrient composition table and choose the one with less fat!
The following people
Pay attention to eating salted duck eggs!
① Pregnant women can't eat.
Pregnant women themselves are prone to edema, and eating salted duck eggs will make the intake of salt in pregnant women far exceed the standard, and the role of estrogen during pregnancy will promote the excessive retention of water and salt in the body.
At this time, if you eat more salted duck eggs, it will easily cause high edema and affect the healthy development of the fetus.
② Cardiovascular patients
Salted duck egg is a kind of food with high oil, high salt and high cholesterol. The cholesterol content in salted duck egg yolk is much higher than that in eggs.
Therefore, patients with cardiovascular diseases, hypertension, hyperlipidemia, diabetes and other basic diseases should eat less or try not to eat salted duck eggs.
So as not to raise blood pressure, cholesterol and affect blood sugar stability.
③ People with spleen deficiency
If you are usually afraid of cold, frequent abdominal distension, indigestion, irregular stool and long urine, it may be a symptom of spleen deficiency. These people are not suitable for eating salted duck eggs.
Salted duck eggs have a high salt content, so even healthy people had better not eat more every time. Half to one is the most.
And drink more water when eating salted duck eggs, and at the same time eat less food with high salt content.