Fish gelatin is an animal glue widely used in people's daily life and industrial production. The main raw materials are fish scales and fish gills.
First, the production of fish scale glue
1, dip material: fish scales should choose larger fish. In order to facilitate processing, it must be selected according to the type, and then subjected to four steps of soaking alkali, pickling, liming and neutralizing. Alkali soaking: soaking in a 5% caustic soda solution for 5 minutes removes grease from the scales and expands the scales. Rinse with water until alkali-free. Then soaked in dilute hydrochloric acid solution 4 times, called pickling acid, time 20-24 hours, of which the first time is short, the fourth is long. After soaking with acid, it is washed repeatedly with water and then soaked in lime water of 0.2%-0.4%. It is called liming for 10-14 days. It is finally washed and neutralized with dilute hydrochloric acid.
2, silicone: After the above treatment, you can put the fish scales in the steamer tannin, continuous cooking a few times, so that the gum is purified. The cooking temperature is preferably 60-70°C. Each cooking time is 2-3 hours and the water consumption is 1-1.5 times of the weight of the scale.
3, Drying: After removing the glue, remove the glue solution, filter it with a filter cloth, heat it in a platter, cool it, solidify it into a jelly, and use a spatula to scrape the glue to a thin sheet of 0.5-1 cm thick. Drying in a drying room results in a finished product.
Second, the production method of fish glue. Fish gizzards are a valuable food supplement. Can be removed from the abdomen when processing fish, washed and dried by stripping the membrane. The processing method of the surimi gum: The surimi is first soaked in alum water with a concentration of 1% to 1.5% for 5 minutes to remove the mucus. Then cut it with scissors to make it into a sheet. If salted fish gizzards are still to be impregnated with fresh water to remove salt. After washing, spread on the cloth, press on the press to remove water, and then stretch the fish fillet evenly into strips. Wet the bag with a damp cloth, and then repeatedly roll it with a round bar or other roller equipment until it is completely flat. Finally dried in the sun Serve fish glue.
First, the production of fish scale glue
1, dip material: fish scales should choose larger fish. In order to facilitate processing, it must be selected according to the type, and then subjected to four steps of soaking alkali, pickling, liming and neutralizing. Alkali soaking: soaking in a 5% caustic soda solution for 5 minutes removes grease from the scales and expands the scales. Rinse with water until alkali-free. Then soaked in dilute hydrochloric acid solution 4 times, called pickling acid, time 20-24 hours, of which the first time is short, the fourth is long. After soaking with acid, it is washed repeatedly with water and then soaked in lime water of 0.2%-0.4%. It is called liming for 10-14 days. It is finally washed and neutralized with dilute hydrochloric acid.
2, silicone: After the above treatment, you can put the fish scales in the steamer tannin, continuous cooking a few times, so that the gum is purified. The cooking temperature is preferably 60-70°C. Each cooking time is 2-3 hours and the water consumption is 1-1.5 times of the weight of the scale.
3, Drying: After removing the glue, remove the glue solution, filter it with a filter cloth, heat it in a platter, cool it, solidify it into a jelly, and use a spatula to scrape the glue to a thin sheet of 0.5-1 cm thick. Drying in a drying room results in a finished product.
Second, the production method of fish glue. Fish gizzards are a valuable food supplement. Can be removed from the abdomen when processing fish, washed and dried by stripping the membrane. The processing method of the surimi gum: The surimi is first soaked in alum water with a concentration of 1% to 1.5% for 5 minutes to remove the mucus. Then cut it with scissors to make it into a sheet. If salted fish gizzards are still to be impregnated with fresh water to remove salt. After washing, spread on the cloth, press on the press to remove water, and then stretch the fish fillet evenly into strips. Wet the bag with a damp cloth, and then repeatedly roll it with a round bar or other roller equipment until it is completely flat. Finally dried in the sun Serve fish glue.
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