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Method for extracting fish oil by utilizing mackerel heads or squid viscera

A technology of squid viscera and fish oil, which is applied in the field of extracting fish oil, can solve the problems of low separation rate, high acid value of fish oil, and difficult control of process conditions, and achieve the effect of stable components, stable active ingredients, and high oil dissolution rate

Inactive Publication Date: 2009-10-07
ZHEJIANG CHINESE MEDICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of producing fish oil by pressing after freezing has the disadvantages of low separation rate and high acid value of fish oil, while enzymatic hydrolysis extracts fish oil by controlling the optimum pH value and temperature of protease for hydrolysis and centrifugal separation to obtain fish oil. Difficult to control, not suitable for industrial production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Take 1000 grams of squid viscera and wash them with water;

[0023] 2. Grind squid viscera into pulp with a stainless steel grinder;

[0024] 3. After freezing the crushed product above, freeze-dry it with a freeze dryer. The freezing temperature is controlled at -15~-30°C, the freeze-drying temperature is controlled at -30~-50°C, and the vacuum degree is controlled at 40~200Pa;

[0025] 4. The freeze-dried product is pulverized with a pulverizer;

[0026] 5. The temperature is controlled at 10°C, and petroleum ether 15 times the weight of the dried squid viscera pulverized product processed by the above steps is used as a solvent for extraction; the extraction is divided into two times, each extraction is 60 minutes, and the two extractions are combined;

[0027] 6. The temperature is controlled at 45°C, and the lower alkanes are volatilized by vacuum concentration to obtain crude fish oil. The vacuum degree is 10-100 Pa. At the same time, the solvent is collected,...

Embodiment 2

[0030] 1. Take 1000 grams of mackerel head and wash it with water;

[0031] 2. Grind the mackerel head into a slurry with a stainless steel grinder;

[0032] 3. After freezing the crushed product above, freeze-dry it with a freeze dryer. The freezing temperature is controlled at -15~-30°C, the freeze-drying temperature is controlled at -30~-50°C, and the vacuum degree is controlled at 40~200Pa;

[0033] 4. The freeze-dried product is pulverized with a pulverizer;

[0034] 5. The temperature is controlled at 10°C, and n-hexane, which is 15 times the weight of the dried mackerel head crushed product after the above steps, is used as a solvent for extraction; the extraction is divided into two times, each extraction is 60 minutes, and the two extractions are combined;

[0035] 6. The temperature is controlled at 45°C, and the lower alkanes are volatilized by vacuum concentration to obtain crude fish oil. The vacuum degree is 10-100 Pa. At the same time, the solvent is collected,...

Embodiment 3

[0038] 1. Take 1000 grams of mackerel head and wash it with water;

[0039] 2. Grind the mackerel head into a slurry with a stainless steel grinder;

[0040] 3. After freezing the crushed product above, freeze-dry it with a freeze dryer. The freezing temperature is controlled at -15~-30°C, the freeze-drying temperature is controlled at -30~-50°C, and the vacuum degree is controlled at 40~200Pa;

[0041] 4. The freeze-dried product is pulverized with a pulverizer;

[0042] 5. The temperature is controlled at 10°C, and petroleum ether 15 times the weight of the dried mackerel head pulverized product treated by the above steps is used as a solvent for extraction; extraction is performed twice, each extraction is 30 minutes, and the two extracts are combined;

[0043] 6. The temperature is controlled at 45°C, and the lower alkanes are volatilized by vacuum concentration to obtain crude fish oil. The vacuum degree is 10-100 Pa. At the same time, the solvent is collected, and the s...

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PUM

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Abstract

The invention relates to a method for extracting fish oil by utilizing mackerel heads or squid viscera. The method comprises the following steps: pulverizing primarily washed mackerel heads or squid viscera into slurry by a pulverizer; freezing to dry the slurry ground materials and grinding the slurry ground materials by a grinder; using lower paraffin hydrocarbon as a solvent for extracting the treated ground materials; recovering the solvent and preparing course fish oil; using salt water to wash the prepared course fish oil to obtain the fish oil. The method combines a freeze drying technology with the solvent for extracting the fish oil in the mackerel heads or the squid viscera at low temperature, keeps the original activities and structures of organisms and ensures that effective constituents in the fish oil are stable and the fish oil which is not easy to oxidize is obtained.

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 mackerel heads or squid viscera. Background technique [0002] Fish oil is rich in omega-3 series and other essential unsaturated fatty acids for human body, especially eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), which have been widely used in medicine , health products, food. The content of EPA and DHA in marine fish is particularly high. The main functions of deep-sea fish oil are: lower cholesterol, prevent cardiovascular diseases; prevent blood coagulation and thrombosis, relieve stroke; reduce arteriosclerosis and high blood pressure; reduce blood viscosity and promote blood circulation; Improve memory, prevent aging, etc., and its role in preventing the spread of cancer is being studied. [0003] At present, the fishery processing in our country is relatively simple, and some discarde...

Claims

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Application Information

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IPC IPC(8): A23L1/327A23L1/30A23D7/02A23L33/115
Inventor 蒋立勤
Owner ZHEJIANG CHINESE MEDICAL UNIVERSITY
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