Seeing that they were willing to listen to themselves, Li Yi picked up the washed dog liver, let the camera take a close-up, and then asked: "Eat more liver and eyes, have you all heard this statement?" ”

"Yes."

Huang Xiaoming on the side answered for the audience: "When I was a child, my mother often fried pork liver for me to eat, saying that it was iron supplementation and eyesight, but she was too old to fry and I didn't like to eat it." ”

In the live broadcast room, the audience also responded with barrages.

"I kind of like liver, but I have to fry it tenderly."

"The master in the big fat restaurant at the entrance of my community fried the liver tip, which is very tender, and I have to eat a meal every three or five to satisfy my hunger."

"After tigers and lions hunt animals, they all dig out their livers to eat first, and carnivores are the best at eating meat."

"There is a very hot Qiaotou Sannen here in my house, there are liver slices in it, fried until it is just broken, it is smooth and tender, and it is enjoyable to eat, that is, people with a bad stomach may hit javelins when they go back at night."

"When the old capital gets up in the morning, it is steamed buns with fried liver, which is called an authentic way!"

"The last time Reba and the others came, Brother Yi made oil-wrapped liver, and I went to a barbecue restaurant near my house to eat once, and I specially let him roast it tenderly, it was really delicious."

"When I was a child, I had a sensitive sense of taste and felt a little bitter in my liver, but when I grew up, I loved it, and I don't know why."

"I was also forced by my parents to eat liver since I was a child, and now the vision of both eyes is 5.0, and I don't know if it has anything to do with eating pork liver."

Looking at the barrage floating by, Li Yi smiled and said: "Eating liver and eyesight, this is true, in the Tang Dynasty more than a thousand years ago, Sun Simiao had already recorded the method of treating night blindness with animal liver in "A Thousand Golden Prescriptions".

The natives of Brazil also spread the method of treating dry eye disease with cod liver oil.

This is because the livers of animals contain a lot of vitamin A.

Vitamin A, also known as retinol, has the functions of promoting growth and reproduction, maintaining the normal secretion of bones, epithelial tissue, vision and mucosal epithelium.

If vitamin A is deficient, there will be slow growth, decreased vision, decreased dark adaptation, and night blindness.

If it is lacking for a long time, it may even cause dryness of ocular epithelial cells, hyperkeratosis, decreased tear gland secretion, and become dry eye disease, followed by corneal softening, perforation, and even blindness in the most serious cases.

Therefore, in our daily diet, we should consume more foods with high vitamin A content to supplement vitamin A.

The food with the highest vitamin A content is the liver of animals. ”

Hearing Li Yi's explanation, the audience in the live broadcast room suddenly realized.

"So it's true, huh? I thought it was because adults didn't like to eat liver when I was a child, so I made up a lie to deceive us! ”

"When I was in high school before, my mother bought me cod liver oil to eat, and I thought it was an IQ tax, but it really worked?"

Seeing these barrages, Li Yi smiled before he said: "The IQ tax is not enough, but the content of vitamin A in fish liver is not more than the poultry and livestock we usually eat."

Take foie gras, for example! The vitamin A content in foie gras is relatively high, containing about 60 mg per 100 grams.

The content of sheep liver, beef liver, pork liver, and chicken liver is also between 30 mg and 50 mg per 100 grams.

Pork liver is the highest, with about 56 mg, and beef liver and sheep liver are not low.

Fish liver also has a lot of vitamin A, but basically it is about 20 mg per 100 grams.

For example, in shark liver, every 100 grams of shark liver contains 21 mg of vitamin A.

If the manufacturer concentrates the vitamin A inside, the content is still considerable. ”

Hearing Li Yi's explanation, the barrage in the live broadcast room suddenly boiled.

"Damn! It's been a long time and the pork liver content is not high! ”

"Isn't this an IQ tax? Brother Yi, you still save face for them! ”

"Then I'll just eat pork liver! How much is a pound of pork liver? How expensive is cod liver oil? ”

"Haha! If the packaging is a little more expensive, how can it be sold at such a high price? ”

"What shark liver oil, sturgeon liver oil, it's just to sound high."

"Practitioners passing by, in fact, many manufacturers of cod liver oil use chemical synthetic materials, which are not shark liver at all, hidden."

"This is a barrage, you hide a hammer?"

There are many discussions in the barrage, but there are still doubts from dog lovers.

"Since pork liver content is the highest, can't you eat pork liver? Why Eat Dog Liver? ”

Looking at the barrage of questioning floating by, Li Yi smiled: "This question is to the point, in terms of vitamin A content, dog liver is an exception.

The vitamin A content in the dog's liver is not at the same level as the liver I mentioned above.

The highest content of vitamin A in pig liver is more than 50, but do you know how much it is in dog liver?

More than 60,000 on average! Up to 70,000!

And it's per gram! per gram!

30,000 units of vitamin A tablets only need half a gram of dog liver, and even without much processing, it is enough to dry and compress them directly into tablets and pills.

For 100 dog liver tablets in a bottle, only 50 grams of dog liver are needed.

After large-scale breeding, the cost is only one dollar.

Even if you add various sales and packaging expenses, the cost will not exceed one piece of five.

Selling for 3 yuan a bottle, the manufacturers have made a lot of money.

However, the same chemical synthetic drug has to be sold for 7 yuan, which is more than doubled.

In addition, after more than 10,000 units of chemically synthesized vitamin A acetate, there will be myalgia side effects.

The vitamin A in the liver of animals can be stored directly in the liver after eating.

If it is a dog liver, if you eat 30,000 units, there will be no side effects. ”

Hearing Li Yi's explanation, there was an uproar in the live broadcast room.

"Huh? And this kind of thing? ”

"The dog's liver is so fierce?"

"! So that's it! No wonder some dog lovers are so desperate to ban eating dogs! There must be a manufacturer that sells cod liver oil in the back! ”

"It's all about doctrine on the lips, but it's all business behind the scenes!"

Looking at the barrage floating by, Huang Xiaoming was thoughtful, and then asked: "I heard that dog liver can't be eaten?" If you eat too much, you will be poisoned. ”

"Yes, vitamin A poisoning."

Li Yi nodded and explained: "Excessive intake of vitamin A can also cause acute poisoning.

Adults who ingest 500,000 units at a time can cause poisoning.

That's why there is a saying that dog liver is poisonous and can't be eaten, because it's easy to overdose.

However, chemically synthesized vitamin A acetate can also be poisoned, and after it enters the human body, it needs to be synthesized with palmitic acid in order to be metabolized.

Palmitic acid is a saturated fat that is rarely ingested by the body.

Palmitic acid cannot be found in the body, and vitamin A acetate will accumulate in the body, and it is easy to overdose on poisoning.

Therefore, compared with the two, dog liver is still safer, as long as the intake is not excessive, there will be no side effects. ”

"Awesome."

Huang Xiaoming nodded as if he didn't understand.

At this time, Hao Libao, who had been listening to the side, also exclaimed: "I know that dog liver is a traditional Chinese medicine, but I didn't expect that there are so many doorways here, and I have long insight." ”

Behind him, the busy apprentices looked up from time to time and looked at Li Yi with surprised eyes.

Isn't this kid a chef? How do you teach chemistry?

1

Relatives at home are coming, and they have to accompany me for a while, and when I come back, I will do another chapter

(End of chapter)