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Method for preparing crude fish oil with fish oil nigre

A technology of fish oil and soapstock, which is applied in the field of preparation of crude fish oil, recycling of fish oil soapstock, and aquatic product processing. It can solve problems such as difficulty in oil separation, poor quality of acidified oil, and black color of oil, so as to reduce energy consumption, Short reaction time, reddish brown and transparent effect

Inactive Publication Date: 2014-08-20
ZHEJIANG GONGSHANG UNIVERSITY +1
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Problems solved by technology

However, the quality of the acidified oil produced by concentrated sulfuric acid is poor, and the color of the oil is black. It needs to add more adsorbent materials such as clay to remove the black color, and at the same time, part of the oil is lost
At the same time, a black opaque gel-like substance will be produced, which will make it difficult to separate the oil

Method used

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  • Method for preparing crude fish oil with fish oil nigre
  • Method for preparing crude fish oil with fish oil nigre

Examples

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Effect test

Embodiment 1

[0019] Embodiment 1, a kind of method utilizing fish oil soapstock to prepare crude fish oil, carries out following steps successively:

[0020] Weigh 30g of fish oil soap stock and place it in a 500mL round-bottomed flask, add 70g of deionized water, then add 4mL of 75% (volume %) sulfuric acid solution, and put in a magnet; place the round-bottomed flask in a high-precision constant temperature water bath In the process, adjust the temperature to 70°C, connect the reflux condenser and feed backflow water, let it reflux reaction (magnetic stirring reaction) under this condition (70°C) for 45min; after the reaction, take out the round bottom flask and pour it into Separating funnel, then wash the grease obtained by the reaction with hot water at about 80°C, wash the grease until it is neutral, let it stand for stratification, then let go of the lower layer of water phase, and collect the upper layer of grease; a total of 8.45g of upper layer of grease was obtained.

[0021] Th...

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Abstract

The invention discloses a method for preparing crude fish oil with fish oil nigre. The method comprises the steps of adding deionized water into the raw material fish oil nigre, which is the byproduct generated from refining of the fish oil according to a material-liquor weight ratio of 1:(0.6-4), so as to obtain a reaction base material; then adding an acidifier concentrated sulfuric acid into the reaction base material according to the use level of 2-10mL of concentrated sulfuric acid for every 100g of reaction base material, backflow reacting for 30-90 minutes while stirring under constant temperature water bath at 50-90 DEG C; after reaction, pouring the obtained product into a separating funnel, washing by hot water till a scrubbing solution is neutral, and then standing for layering, thus obtaining the upper layer of oil phase, the crude fish oil. By adopting the method, the problem of carbonization of the oil in acidification of the fish oil nigre can be solved, and high-quality crude fish oil with high acid value can be obtained.

Description

technical field [0001] The invention belongs to the technical field of oleochemicals, relates to aquatic product processing technology, in particular to a method for recycling fish oil soapstock; specifically, it is a method for preparing crude fish oil by utilizing fish oil soapstock. Background technique [0002] Fish oil refers to the general term for all fats in fish, including body oil, visceral oil and brain oil. It is rich in polyunsaturated fatty acids (PUFA), especially eicosapentaenoic acid (EPA) and docosahexaene acid (DHA). There has been a long history of research on the nutritional value and physiological functions of polyunsaturated fatty acids in fish oil. The rich variety of omega-3 polyunsaturated fatty acids are essential fatty acids that cannot be synthesized by the human body, especially EPA and DHA, which have Its unique physiological activity and health care function have been popular among people in recent years. In 2009, the Ministry of Health of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B13/02
CPCY02W30/74
Inventor 戴志远饶华俊徐坤华王庆和周涛
Owner ZHEJIANG GONGSHANG UNIVERSITY
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