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...
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In the summer season, broad beans are generally mature. Folklore believes that eating broad beans can strengthen the kidneys, and it will not be difficult to transplant rice and glutinous rice. In many places in the south of the Yangtze River, the cooked broad beans are chained into necklaces, and the children are taken out to eat. The broad beans are used to stir the pickles, and the night flower...
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