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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

Inactive Publication Date: 2011-08-03
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the lack of corresponding in-depth development, most of these wastes are currently used as fishmeal with low economic value, resulting in a huge waste of resources

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) cooking: the tilapia processing waste is pulverized, adds waste quality 20% water, and regulates the pH of the system to 8.0 with sodium hydroxide, Then boil under normal pressure for 30 minutes; 2) Squeeze and centrifuge: Press the waste after cooking to separate the residue from the oil-water mixture, then centrifuge the oil-water mixture to separate the oil from the water, so as to obtain tilapia The crude product of fish oil; 3) lipase treatment: lipase (Novozymes, trade name: Lipozyme TL 100L) is added in the crude product of tilapia fish oil, the addition is 0.1% of fish oil quality, hydrolysis 5 Hours; the system is kept stirring during the whole hydrolysis process, the system temperature is kept at 35±2°C, and the pH is adjusted by adding sodium carbonate at the same time, so that the pH of the fish paste system is kept between 7.2 and 7.5 during the who...

Embodiment 2

[0021] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) cooking: the tilapia processing waste is pulverized, adds waste quality 20% water, and regulates the pH of the system to 8.0 with sodium hydroxide, Then boil under normal pressure for 30 minutes; 2) Squeeze and centrifuge: Press the waste after cooking to separate the residue from the oil-water mixture, then centrifuge the oil-water mixture to separate the oil from the water, so as to obtain tilapia The crude product of fish oil; 3) lipase treatment: lipase (Novozymes, trade name: Lipozyme TL 100L) is added in the crude product of tilapia fish oil, and the addition is 0.5% of fish oil quality, hydrolysis 2 Hours; the system is kept stirring during the whole hydrolysis process, the system temperature is kept at 35±2°C, and the pH is adjusted by adding sodium carbonate at the same time, so that the pH of the fish paste system is kept between 7.2 and 7.5 during the...

Embodiment 3

[0023] The processing method of extracting high iodine value fish oil from tilapia processing waste is as follows: 1) cooking: the tilapia processing waste is pulverized, adds waste quality 20% water, and regulates the pH of the system to 8.0 with sodium hydroxide, Then boil under normal pressure for 30 minutes; 2) Squeeze and centrifuge: Press the waste after cooking to separate the residue from the oil-water mixture, then centrifuge the oil-water mixture to separate the oil from the water, so as to obtain tilapia The crude product of fish oil; 3) lipase treatment: lipase (Novozymes, trade name: Lipozyme TL 100L) is added in the crude product of tilapia fish oil, the addition is 0.3% of fish oil quality, hydrolysis 3.5 Hours; the system is kept stirring during the whole hydrolysis process, the system temperature is kept at 35±2°C, and the pH is adjusted by adding sodium carbonate at the same time, so that the pH of the fish paste system is kept between 7.2 and 7.5 during the w...

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PUM

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Abstract

The invention discloses a processing method for extracting high-iodine-value fish oil from tilapia processing waste. The method is a processing method for obtaining fish oil with the iodine value of over 120 g(I) / 100g by cooking the tilapia processing waste, squeezing, centrifuging, performing lipase treatment, performing winterization at low temperature and centrifuging once again. The processing method has the advantages that: after the tilapia processing waste is cooked, squeezed, centrifuged, treated with lipase, winterized at low temperature and centrifuged once again, the iodine value of the obtained fish oil is increased from the original 93-98 g(I) / 100g to 120-150g(I) / 100g, the processing method for extracting fish oil of which the iodine value is not lower than 120 g (I) / 100g in the Aquatic Product Industry Standard (SC / T35002-2000) of the People's Republic of China is implemented, and the economic value of the tilapia fish oil is raised.

Description

technical field [0001] The invention discloses a processing method for extracting fish oil with high iodine value from tilapia processing waste, belonging to the technical field of aquatic product processing. Background technique [0002] my country is the largest tilapia breeding and processing country in the world, but my country's tilapia processing industry has been in a state of extensive processing for a long time. The export products of tilapia are mainly frozen fish fillets, and the processing of export fish fillets During this process, the fillet yield was about 36%. Tilapia processing produces a large amount of processing waste, including viscera, fish bones, fish skin, minced meat, etc., accounting for about 60% of the weight of the whole fish, of which the viscera contains about 30% of crude fat, and the fish skin contains about 10% The crude fat and tilapia leftovers have high comprehensive utilization value. Due to the lack of corresponding in-depth developmen...

Claims

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Application Information

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IPC IPC(8): C11B1/02C11B1/06C11B3/00
Inventor 陈德慰苏键孙亚楠
Owner GUANGXI UNIV
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