bird's nest is made of swallows' nests, but this kind of swallow is not the swallow that builds nests under our eaves. The one under the eaves is called family swallow , and the swallow that makes bird's nests is called swiftlets.
Bird's nest is obviously the saliva of swallows, but why is it so expensive?
The reason is that it is a nest made of mucus secreted from the throat of the swiftlet. It is made through a series of complex processes and exquisite processing. Moreover, the saliva of swiftlet also contains very rich nutritional value, which is the nutrient required by the human body.
Moreover, this kind of bird's nest is sparse and it is very difficult to pick, so it is very expensive.
But many netizens said: 's behavior of breaking up the swallow's nest into bird's nest for human use is extremely cruel. Whether it is an animal or a human, saliva is very precious and has a very high nutritional content. However, saliva may contain bacteria and is very unhygienic to use, which is a problem that many people are worried about.
Some people say that bird's nest actually does not have much nutritional value, and it contains very low trace elements, which is not even as good as an egg.
There is a medical teacher who even said that bird's nest is actually an IQ tax. The reason is:
1. Bird's nest is not domestic , but is produced in Southeast Asia. It was introduced since . In the Ming Dynasty, was not as expensive as mineral water in Vietnam. Tourists who go to travel are buying in large quantities. They are also wondering why we Chinese people are so rare in bird's nest.
2. The composition of bird's nest is actually the swallow's saliva , which is mixed with its down and condensed on the cliff.
3. The nutritional value of bird's nest is mainly protein and sialic acid . The essential amino acid in protein contains the protein essential amino acid is not as high as that of eggs. In fact, our body can synthesize sialic acid by itself, and you can't absorb much.
Everyone’s statements have their own advantages. What do you think about eating bird’s nest?
