Processing method for extracting high-iodine-value fish oil from tilapia processing waste
A processing method and technology of fish with high iodine value, applied in the direction of fat oil/fat production, fat oil/fat refining, fat generation, etc., can solve the problems of waste of resources, etc., and achieve the effect of high-efficiency utilization, high operating temperature and simple equipment
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[0018] Example 1
[0019] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) Cooking: pulverize the tilapia processing waste, add 20% water of the waste mass, and adjust the pH of the system to 8.0 with sodium hydroxide. Then boil for 30 minutes under normal pressure; 2) Squeezing and centrifugation: the waste after cooking is squeezed, the residue is separated from the oil-water mixture, and then the oil-water mixture is centrifuged to separate the oil and water, so as to obtain rofi Crude product of fish oil; 3) Lipase treatment: Add lipase (Novozymes, trade name: Lipozyme TL 100L) to the crude product of tilapia fish oil, the addition amount is 0.1% of the quality of fish oil, hydrolyzed 5 Hours; the system keeps stirring during the whole hydrolysis process, the system temperature is kept at 35±2℃, and the pH is adjusted by adding sodium carbonate, so that the pH of the fish paste system is kept between 7.2~7.5 during...
Example Embodiment
[0020] Example 2
[0021] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) Cooking: pulverize the tilapia processing waste, add 20% water of the waste mass, and adjust the pH of the system to 8.0 with sodium hydroxide. Then boil for 30 minutes under normal pressure; 2) Squeezing and centrifugation: the waste after cooking is squeezed, the residue is separated from the oil-water mixture, and then the oil-water mixture is centrifuged to separate the oil and water, so as to obtain rofi Crude product of fish oil; 3) Lipase treatment: Add lipase (Novozymes, trade name: Lipozyme TL 100L) to the crude product of tilapia fish oil, add 0.5% of the quality of fish oil, hydrolyze 2 Hours; the system keeps stirring during the whole hydrolysis process, the system temperature is kept at 35±2℃, and the pH is adjusted by adding sodium carbonate, so that the pH of the fish paste system is kept between 7.2~7.5 during the whole hydrolysi...
Example Embodiment
[0022] Example 3
[0023] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) Cooking: pulverize the tilapia processing waste, add 20% water of the waste mass, and adjust the pH of the system to 8.0 with sodium hydroxide. Then boil for 30 minutes under normal pressure; 2) Squeezing and centrifugation: the waste after cooking is squeezed, the residue is separated from the oil-water mixture, and then the oil-water mixture is centrifuged to separate the oil and water, so as to obtain rofi Crude product of fish oil; 3) Lipase treatment: Add lipase (Novozymes, trade name: Lipozyme TL 100L) to the crude product of tilapia fish oil, the addition amount is 0.3% of the quality of the fish oil, and the hydrolysis is 3.5 Hours; the system keeps stirring during the whole hydrolysis process, the system temperature is kept at 35±2℃, and the pH is adjusted by adding sodium carbonate, so that the pH of the fish paste system is kept betwe...
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