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Method for extracting fish oil from waste sleeve-fish liver

A technology of fish oil and liver, which is applied in the field of extracting fish oil from discarded squid liver, can solve problems that have not been paid attention to and have not been described in detail, and achieve the effects of easy process control, increased added value, and high extraction rate

Inactive Publication Date: 2011-11-23
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the mid-1950s, it was discovered that fish oil has the effect of lowering blood lipids, but it was not taken seriously
However, how to process, refine and purify the obtained crude fish oil is not described in detail

Method used

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  • Method for extracting fish oil from waste sleeve-fish liver
  • Method for extracting fish oil from waste sleeve-fish liver
  • Method for extracting fish oil from waste sleeve-fish liver

Examples

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Embodiment Construction

[0035] Below in conjunction with embodiment the present invention is described in further detail.

[0036] 1. Extract fish oil from squid liver

[0037] Take 100g squid liver, add water according to the mass ratio of 1:1, 1:1.5, 1:2 respectively, stir evenly, fill with nitrogen for 10min, and add 0.2g of L-ascorbic acid-6-palmitate to prevent oxidation, put in In a pressure cooker, high temperature and high pressure (121°C, 0.5Mpa), process for 20min, take it out and centrifuge at 5000rpm / min for 30min, the oil floating in the upper layer is the crude fish oil.

[0038] 2. Refining of fish oil

[0039] a, degumming: take a certain amount of crude fish oil, heat 80°C in a water bath, and constantly stir, then slowly add phosphoric acid (80% by volume) accounting for 1% of the volume of fish oil, stir evenly, and heat at 80°C for 1min, Then centrifuge at 5000rpm / min for 20min, and the oil floating in the upper layer is the degummed fish oil.

[0040] B, deacidification: add N...

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Abstract

The invention discloses a method for extracting fish oil from waste sleeve-fish liver. The method comprises the following steps: extracting crude fish oil from the sleeve-fish liver by a water extraction method; mixing the sleeve-fish liver and water according to a mass ratio of (1:1)-(1:3); charging nitrogen and adding L-ascorbic acid-6-palmitate for extraction; and processing the extracted crude fish oil through degumming, deacidification, decoloring, deodorization and the like to obtain the refined fish oil. The method disclosed by the invention prevents the oxidation of unsaturated fatty acid in the fish oil by charging nitrogen or adding L-ascorbic acid-6-palmitate antioxidant, and strictly controls the refining conditions of temperature, time and the like at the same time; all indexes of the refined sleeve-fish oil reach the first-grade requirements of the fish oil SC / T3502-2000 standard; the fish oil extracted by the method not only has high quality, but also is improved in color, appearance and smell; the method has high extraction rate, and is simple to operate and easy to control; and moreover, the method disclosed by the invention comprehensively utilizes the sleeve-fish waste, turns waste into wealth, increases the additional value and purifies environment.

Description

technical field [0001] The invention relates to a method for extracting fish oil from fish processing by-products, in particular to a method for extracting fish oil from discarded squid liver. Background technique [0002] During squid processing, wastes such as head, feet, liver and epidermis, which account for 30% of the squid's weight, are produced. For these wastes, the general treatment method is to process fishmeal or bury them, which is not only a huge waste of fishery resources, but also has the problem of environmental pollution. In foreign countries, such as Spain and Japan, the utilization of squid liver adopts its own enzymatic fermentation method to produce squid soluble slurry, squid meal, etc. as fish feed. Squid soy sauce can also be used as a protein raw material for making soy sauce. Squid liver is also a good raw material for extracting fish oil. Its oil content is relatively high. Fish oil is rich in omega-3 series polyunsaturated fatty acids, mainly EP...

Claims

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Application Information

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IPC IPC(8): A23L1/327A23L1/30A23D7/02A23L17/20
Inventor 谢超丁璞霍建聪
Owner ZHEJIANG OCEAN UNIV
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