1. Use fish waste to produce fish oil and fishmeal: Fish oil is mainly used for the extraction of cod liver oil, it can also be used as a leather preparation instead of mineral oil, or for the manufacture of medicines for the treatment of diabetes, hypertension, etc. Fishmeal is mainly used as a high-protein feed . Generally, the scraps processed per ton of fish can produce 30 kilograms of fish oil and more than 200 kilograms of high-quality fishmeal.
2. Leather tanning: As an important leather raw material, fish skin is gradually being valued by people. Fish leather made of leather shoes, gloves, purses, wallets and other items, very popular with consumers. Export exchange exchange rate is extremely high.
3. Shell processing nacre powder and shell powder: Nacre powder is widely used in medicine, cosmetics manufacturing; shell powder is an indispensable raw material for feed processing.
4. Fish bone processing bone meal: bone meal is mainly used as feed additive. The processing method is as follows: the fish bones are put into a pot and boiled for several hours. After the bones are completely boiled out, they are removed and dried, and they are crushed and sieved.
5. Protease extraction from fish intestine: This enzyme is mainly found in digestive enzymes in fish and acts as a biocatalyst to accelerate chemical reactions. It can be widely used in the production of cleaners, remove stains and dirt, and can also be used in foods. Processing industry and biological research.
6. Process fish silver with scales: Fish silver is an expensive special industrial product extracted from the scales. Its appearance is pure silver white, with a high degree of luster. In addition to its use as a pharmaceutical raw material and biochemical agent, it is especially used in pearl decoration industry. And the paint manufacturing industry has a wide range of uses. Treated fish scales can also be used to process fishmeal. The economic benefits are considerable.
7. Scale processing scale glue: rinse the collected fish scales, remove debris, and put it into a container, soak it in fresh water for 24 hours, then add 10% hydrochloric acid according to the scale weight, and continue soaking for 1 to 2 hours to remove impurities. Rinse with clean water and put it in a pan. Add water to the squama and cook it for 6 hours at a temperature of 80°C to 90°C. Stir properly until the gelatin in the fish scale is completely dissolved. Then use a cloth bag or a pressure machine to filter. The glue is discharged, and the glue is filled into a container and solidified at a room temperature of 6° C. to 9° C. for 12 hours, and the blade is dried with a knife.
8. Chitin shell processing chitin: Chitin is extremely versatile and can be used as a medicine to strengthen immunity. It is not necessary to make surgical sutures. It can also be used as waste water treatment agent, food preservative, cigarette adhesive, Plant growth regulators, etc.
For a long time, chitin hidden in the shell of shrimp head has been considered as garbage and naturally lost. It has not been discovered until recently by scientists and technicians that chitin and its derivative products have been used in agriculture, medicine, food, chemical industry, cosmetics, and biology. Many aspects such as technology and environmental protection have extremely important and extensive uses. Processing and utilization of waste from aquatic products has significant economic, ecological and social benefits.