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Shellfish, shells, crab legs... These wastes, which are often discarded by people, are processed and used. An emerging biological material called “chitin†is being widely used in the fields of medicine, food, textiles, and human health. Make new contributions. The relevant experts therefore called on the country to issue support policies as soon as possible to promote the healthy development of the chitin industry.
Professor Du Yumin, director of the Chitin Specialty Committee of the Chinese Chemical Society and professor at the School of Resources and Environmental Sciences at Wuhan University, said that chitin is a method of decalcifying raw materials such as shrimp, shells, and crab legs with strong acid, and then removing protein and decoloring with strong alkali. The resulting macromolecular biological raw materials can be used to produce textiles with antibacterial, anti-radiation, and antiviral effects, as well as medical dressings. After further enzymatic treatment, chitin is made into derivatives with different physicochemical properties, such as chitosan, chitooligosaccharides, or ammonia sugar, and it also has the functions of improving immunity, anti-tumor, delaying aging, promoting chondrocyte regeneration, and treating bone and joints. Diseases and other biological activities can be used as raw materials for medicines and health foods. At present, chitin and its derivatives have been widely used in foreign health food industry and are favored by consumers.
The total amount of chitin and its derivatives produced in China is more than 300,000 tons per year. Liu Changxi, deputy director of the Chinese Society of Geriatric Care, said anxiously in an interview with reporters recently that during the production of chitin, due to the consumption of large amounts of acid and alkali materials such as hydrochloric acid, sodium hydroxide and concentrated alkali, a serious environment was created. Pollution. He said that the production of 300,000 tons of chitin consumes about 8.4 million tons of acid and alkaline water. Although the water is discharged after acid and alkali neutralization, it will still cause serious pollution to soil, rivers, and air. In China, the enterprises that produce chitin are basically small enterprises located in remote areas. The employees' awareness of environmental protection is very poor, and the environmental protection departments are very difficult to supervise them in place. They urgently need government departments to strengthen supervision and management, and formulate support for the development of the industry. Policy, survival of the fittest, promote the healthy development of China's chitin industry.
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