Chitin, with the CAS number 1398 - 61 - 4, is a natural polysaccharide that is widely distributed in nature. It is the main component of the exoskeletons of crustaceans such as crabs and shrimps, as well as the cell walls of fungi. Our Factory Supply Chitin is sourced from high - quality raw materials and is produced under strict quality control standards, ensuring its high purity and stability.
Physical properties: Chitin is a white or slightly yellowish powder. It is insoluble in water, dilute acids, and most organic solvents, but can be dissolved in concentrated inorganic acids such as hydrochloric acid. Chemically, it is a linear polymer composed of N - acetyl - D - glucosamine units linked by β - (1→4) glycosidic bonds. The degree of deacetylation can vary, which affects its physical and chemical properties.
1. **Biomedical field**: Chitin has excellent biocompatibility, biodegradability, and low immunogenicity. It can be used in wound dressings to promote wound healing, as it can absorb exudates, prevent bacterial infection, and stimulate cell proliferation. In tissue engineering, chitin scaffolds can provide a three - dimensional structure for cell growth and differentiation, which is useful for the repair and regeneration of various tissues such as bone, cartilage, and skin.
2. **Agriculture**: Chitin can be used as a natural pesticide and fertilizer. It can stimulate the plant's immune system, making the plants more resistant to diseases and pests. At the same time, it can improve soil structure and fertility, promoting plant growth and development.
3. **Food industry**: Chitin can be used as a food additive. It can be used as a thickener, stabilizer, and emulsifier in food products. It also has the function of reducing cholesterol absorption in the human body, so it can be used in the production of health - care foods.
1. **In biomedical applications**: When used in wound dressings, chitin powder can be mixed with other polymers to form a film or sponge. The prepared dressing should be cut to the appropriate size and applied to the wound surface. For tissue engineering scaffolds, chitin needs to be processed into a three - dimensional porous structure through techniques such as freeze - drying or electrospinning.
2. **In agriculture**: Chitin can be formulated into a water - soluble solution and sprayed on plants or added to the soil. The concentration of the solution should be determined according to the specific crop and application scenario.
3. **In the food industry**: When used as a food additive, chitin should be added in accordance with the relevant national standards. It can be directly added to food products during the production process and mixed evenly.
1. **Biomedical case**: A hospital used chitin - based wound dressings on patients with burns. The results showed that compared with traditional dressings, the chitin dressings could significantly reduce the wound healing time. The wound exudates were absorbed effectively, and the incidence of infection was also reduced. The patients reported less pain during the treatment process, indicating that chitin has great potential in wound treatment.
2. **Agricultural case**: A farm applied chitin - containing fertilizers to tomato plants. The tomato plants showed better growth vigor, with stronger stems and more lush leaves. The yield of tomatoes increased by about 20% compared with the control group. At the same time, the incidence of diseases such as blight was significantly reduced, which showed that chitin can improve the disease - resistance and yield of crops.
3. **Food industry case**: A food company added chitin to a yogurt product as a thickener and stabilizer. The yogurt had a more stable texture and a longer shelf - life. In addition, consumer feedback showed that they were more willing to buy this yogurt because of its health - care function of reducing cholesterol.
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