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Processing technic of large yellow croaker fish liver oil

A processing technology and technology of cod liver oil, applied in the production/processing of edible oil/fat, etc., can solve the problems of high pH value, high concentration of alkaline water, high saponification rate, and achieve low saponification rate, low hydrolysis temperature control, use of alkali small amount of effect

Inactive Publication Date: 2012-01-18
NINGDE XIAWEI FOOD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Investigating the reason, we believe that for large yellow croaker cod liver oil in the procedure of this document, the concentration of alkaline water is too high, the pH value is too high, and the saponification rate in hydrolysis is too high due to improper temperature control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] The crushing step of the present invention makes the liver into a slurry state and mixes it with alkaline water more uniformly by means of a grinding method, so that the secondary temperature control can reduce the temperature and achieve the purpose of decomposition.

[0052] High temperature will promote the saponification of a large amount of oil and the destruction of vitamins. In addition, the protein will coagulate more tightly, which will inevitably consume more alkali and prolong the hydrolysis time. Not only that, but when fats and oils suddenly contact with alkali at high temperature, a large amount of soap will be produced, which will increase the consumption of liver oil and form an emulsion, which brings difficulties to the separation of liver oil.

[0053] When the grease separated after adding alkaline water once is added alkali again, the grease produced by adding alkali once will be immersed in the second alkali, resulting in partial saponification and r...

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PUM

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Abstract

The invention discloses a processing technic of large yellow croaker fish liver oil, relating to a fish liver oil production technic. The processing technic comprises the following steps of: (1) dissecting, taking livers out, blowing off, cleaning, refrigerating and storing; (2) defreezing before processing; (3) removing impurities and fragmenting; (4) decomposing with alkaline water; (5) separating and washing; and (6) refining. The method is characterized in that: fragmenting in the impurity removing and fragmenting of the step (3) refers to putting unfrozen liver blocks into a colloid mill for milling into slurry; and the decomposing with alkaline water in the step (4) refers to putting alkaline water of which the concentration is 0.8-1.2 percent and the pH value is 7-8 and the slurry liver in the weight ratio 1:(0.8-1) into a reaction kettle at one time in the normal-temperature state for stirring at raised temperature, raising the temperature to 40-45 DEG C, preserving heat for 1 hour, raising the temperature to 65-70 DEG C and preserving heat for 2 hours. The processing technic has the advantages of small alkali using amount, small quantity of waste residues and low cost. The alkaline water is added at one time, and the hydrolysis control temperature is low, so that the saponification rate is low.

Description

Technical field: [0001] The invention relates to a cod liver oil production process. Background technique: [0002] http: / / www.foodqs.cn / news / jszl03 / 2003102420199.htm (China Food Industry Network) published a technical document: [0003] Processing Technology of Cod Liver Oil [0004] Food Industry Network (2003-10-24) [0005] The liver of sharks is larger than that of other fishes. The liver of most fish only accounts for about 1-3% of body weight, while the liver of sharks accounts for about 10-15% of body weight. The oil content of shark liver is also very high, the liver oil content of general fish is about 3-20%, while the oil content of shark liver is about 30-70%. Cod liver oil is rich in vitamins A and D. Vitamin A has the function of preventing night blindness and promoting the growth and development of animals, and vitamin D has the function of preventing rickets. Cod liver oil is the most abundant substance containing these two vitamins in nature. So far, cod...

Claims

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Application Information

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IPC IPC(8): A23D7/02
Inventor 蔡述秋王昌各
Owner NINGDE XIAWEI FOOD
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