The whiter the hairtail skin, the more nutritious it is? Can eating fish eyes improve eyesight? Many people are unaware of this...

Expert in this article: Wang Silu, National Senior Food Inspector, Internal Auditor of HACCP Food System of the People’s Republic of China

This article was reviewed by Liu Shaowei, Deputy Director and Professor of Food and Drug Regulatory Research Center, East China University of Science and Technology

Three meals a day

Pay attention to the combination of meat and vegetables

And fish

Because the price is moderate

Rich in various nutrients

Becoming the first choice of meat food for many families

Autumn wind blows, hairtail fat

Now is a good time to eat hairtail

According to statistics

Per 100g of hairtail

Caloric value 127 kcal

Contains 17.7g of protein

(Equivalent to eating 2.5 eggs)

Contains polyunsaturated fatty acids

DHA and EPA 353㎎

Hairtail

High protein and low fat

Rich in

Omega-3 unsaturated fatty acids

Regular moderate intake

Positive effects on cardiovascular health

but

When my friends buy hairtail

Have you found

The eyes of hairtail fish can be yellow or white.

Rumor has it that

"Yellow-eyed cutlassfish are better than white-eyed cutlassfish.

High nutritional value”

Some people also say

"The whiter the hairtail skin, the higher its nutritional value"

So

These statements

Is it true?

today

Let’s talk about it in detail.

Are yellow-eyed hairtails more nutritious than white-eyed hairtails?

There are many comments on the Internet studying the color of hairtail's eyes, causing consumers to often hesitate between white-eyed hairtail and yellow-eyed hairtail.

In fact, the color of hairtail's eyes is related to factors such as the origin and species of the hairtail, and there is not much difference in nutritional value.

When buying hairtail, you can determine the freshness by the clarity (transparency) of the fish eyes, but there is no scientific basis to judge nutrition by color, so you don't need to worry too much about it.

In addition, some people say that "eating fish eyes can improve eyesight, so you should eat more of them."

Fish eyes do contain a certain amount of EPA, DHA and other n-3 polyunsaturated fatty acids, but their content is not much and not very prominent, so it is difficult to achieve the effect of improving eyesight. Containing nutrients and reaching the effective dose are two completely different things, so we must look at it scientifically.

The whiter the color of hairtail skin, the higher its nutritional value?

Rumor has it: The whiter the white substance on the hairtail skin, the higher the nutritional value of the hairtail.

This layer of white fish skin is the "silver fat" of hairtail, it is also called "silver scale". Silver scale is not fish scale, it is a layer of epidermis formed by special fat.

Analyzing its nutritional value, it mainly contains fat, as well as some fat-soluble aromatic substances (which enhance the delicious taste of fish). In addition, fish skin also contains a lot of purine, and excessive intake is not good for the body.

To sum up, the whiter the color of the hairtail skin, the more fat and purine it contains, and it has nothing to do with the so-called nutritional value.

Don’t buy this kind of hairtail!

1. There is a noticeable odor

Normal, fresh hairtail has its own inherent fishy smell. If the hairtail you buy has a bad smell (ammonia smell), diesel smell, or other obvious irritating smell, you should not buy this fish.

2. The fish body color changes significantly

When purchasing hairtail, look at the skin color visually. If the fish body has become obviously black or dark, and is significantly different from the "silver-white" color, it is not recommended to purchase it.

3. It feels inelastic

When buying hairtail, you can press the belly of the hairtail with your hand. If it feels very elastic when pressed, the fish is relatively fresh. If the hairtail feels particularly soft and does not bounce back at all when pressed, it proves that the hairtail has been stored for a long time and is not recommended.

4. Poor quality of fish eyes and gills

When buying fish, look at the fish eyes. Fish with bright, clear eyes that are slightly bulging are fresh fish. In addition, fish with bright red gills are of better quality.

5. It is not recommended to buy hairtail that is too big

Relatively speaking, fish that are too big are older and their meat will be relatively rough. It is recommended to choose hairtail of moderate size.

Things to note when buying hairtail

When purchasing hairtail, you must choose formal channels and buy hairtail sold in large, well-known supermarkets. The safety factor of the product is relatively high. Hairtail sold by some small stalls and vendors may pose safety risks.

The pictures in this article with the "Science Popularization China" watermark are all from the copyright gallery. The pictures are not authorized for reprinting.