Chitin was discovered in 1811 by Henri Braconnot, a French chemist and pharmacist. After cellulose, it is the most important biopolymer in nature. In fact, it forms the exoskeletons of insects, shellfish, and many fungi, such as cellulose, which exhibit the same chain structure, called polymers. Polymers are long molecules, such as pearl necklaces, that are made of other molecules or molecula...
Moderate diet in summer is important...
It is important to replenish water in autumn....
In summer, the weather is hot, people are prone to hot and humid, loss of appetite and other symptoms, you can eat some food to quench your thirst, clearing away heat and detoxification to alleviate these symptoms. So what to eat in the summer, what vegetables and fruits are suitable for summer, let's take a look. ...
These foods are not suitable for eating in autumn....
When summer comes, we should control the diet, although we can eat more food in the summer, but if the choice of diet and eating methods are not healthy, this time is also easy to cause our health to be affected, so the summer When you should learn how to eat, let's take a look at how we should eat. ...
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