JP3531061B2 - Method for producing deep sea shark liver oil - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing liver oil having a high unit vitamin content by collecting liver oil from the liver of a deep-sea shark without applying heat.

[0002]

2. Description of the Related Art Conventionally, as a method of collecting liver oil from the liver of a deep-sea shark, a heat treatment method, a combination of vacuum distillation and fractional distillation, and an alkali digestion method have been carried out, but any of them requires heating. In reality, it is heated to at least 50 ° C. or higher.

However, since vitamins are easily deteriorated by heat and are unstable, most vitamins are inevitably destroyed even by heating at about 50 to 60 ° C., and further, the fish odor of liver oil is removed and the taste is improved. There was a problem that it was extremely difficult.

Therefore, in order to solve the above problems, Japanese Patent Application Laid-Open No. 60-193923, "Production Method of Highly Deodorized High-Unit Vitamin Oil", was filed.

According to the present invention, the liver is sufficiently crushed to obtain a suspension, which is subjected to a freezing treatment, and then the viscous solid matter and the like in the surface layer of the liquid material produced by the slow thawing of natural thawing are removed to obtain a bottom portion. Water and impurities are separated into layers, and the resulting oily substance is dehydrated in a conventional manner to give liver oil containing high-unit vitamins with good taste and no fishy or unpleasant odor. It is characterized by that.

[0006]

However, the liver is sufficiently crushed to give a suspension, and after freezing, it is naturally thawed, that is, about 5 to 15 days. Under the present circumstances, the components and unpleasant odors are transferred to the liquid components, and water is further exuded. As a result, dehydration and deodorization are performed by adding potassium sulfate and activated carbon and filtering.

Further, since the oily substance is exposed to air during the thawing period, it is very likely to be oxidized, and there is a problem that the freshness of the liver oil is lowered.

Since the natural thawing period is about 5 to 15 days, there is a problem that the working process until obtaining the liver oil is long and the working efficiency is very poor.

Therefore, in the present invention, in order to solve the above-mentioned problems, the solid component and the liquid component are forcibly centrifuged at a low temperature, and the liquid component is filtered and subjected to an antioxidant treatment to produce a high unit vitamin. The purpose of the present invention is to obtain liver oil containing and having a high freshness and no odor.

[0010]

According to the present invention, claim 1
At a low temperature where the room temperature is set to around 5 ° C to 8 ° C, the liver of deep-sea shark is crushed into a paste, which is then subjected to cooling centrifugation to separate into an oily liquid component and a solid component. It is characterized in that impurities in the components are removed by filtration and an antioxidant treatment is carried out.

A second aspect of the present invention is characterized in that at least one of deep sea shark body, epidermis and bone is added to the liver of the first aspect and crushed to form a paste.

In the above claim 1, the term "under low temperature" means that deep-sea sharks live in the deep sea where the water temperature is about 0 to 6 ° C. Under the low temperature range, crushing and centrifugation, and further filtration and antioxidant treatment. By doing so, it becomes possible to produce liver oil while maintaining the highest freshness.

[0013] In claim 2, active ingredients such as vitamins, minerals and calcium are contained in the body, epidermis and bones other than the liver of deep-sea shark, and the nutritional balance can be obtained by adding one or all of them. Excellent liver oil can be obtained.

In the liver of deep-sea sharks, there are various natural compounds that are beneficial to the human body, such as squalene, squalamine, vitamin A, vitamin E, trace minerals, omega-3 oil-based polyunsaturated fatty acids (DHA, EPA, etc.), and alkyl glycerol. The substance contains.

In the method of the present invention, in order to extract these natural substances from the liver and body, epidermis and bone without destroying them,
A deep-sea trawler catches deep-sea sharks and at the same time transports them to the factory while keeping them cold at about 5 ° C or less,
Freshness is maintained in a room set at around 8 ° C. for the production process of liver oil.

Further, since a series of operations are always carried out at a constant low temperature, freshness is maintained, fish odors and unpleasant odors are less likely to occur, and the work time is further shortened, whereby the generation of water is extremely high. Less.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the method of the present invention will be described below.
The details will be described with reference to the drawings showing the embodiments. As shown in FIG. 1, the liver, body, epidermis, and bones of a deep-sea shark are crushed by a chopper 1 into a paste having a particle size of about 5 microns.

Then, the paste-like liver or the like is put into a bucket 2 made of fibers permeable to only liquid water,
It is installed in the cooling centrifuge 4 by the auto balancer 3.

The cooling centrifuge 4 permeates only the liquid component to the outside of the bucket 2 at a temperature of 5 ° C. or less while leaving the solid component in the bucket 2 for separation. Then, the separated liquid component is discharged into the intermediate tank 5.

Next, the liquid component A charged into the intermediate tank 5 is transferred into the antioxidant treatment tank 8 by the transfer pump 6 through the two-step type filtering section 7. The inside of the antioxidant treatment tank 8 is evacuated by the vacuum pump 11.

The filtering section 7 is composed of a 300 mesh filter and removes impurities and suspended matter in the liquid component A.

The liquid component A stored in the antioxidation treatment tank 8 is ejected from a nitrogen gas ejecting pipe 9 provided in the lower portion of the antioxidation treatment tank 8 to eject liquid nitrogen.
Oxygen in the interior is removed to carry out an antioxidant treatment to obtain liquid water A having no odor, and further a two-stage type filtration unit 10
Thus, the impurities that could not be removed by the filtration unit 7, the suspended solids, the bacteria, etc. are completely removed, and the production of liver oil is completed.

In the present invention comprising the above-mentioned method, the paste-like liver or the like is collected by the cooling centrifuge 4 at a low temperature at a low temperature for a short period of time to collect only the liquid component.
It is possible to collect unpleasant odors and harmful substances in solid components without transferring to liquid components.

Further, filtration of impurities and suspended matter is carried out, and the antioxidant treatment is carried out in the vacuumed antioxidant treatment tank 8 before the oxidation starts, whereby the freshness of the liver oil is maintained and it is difficult to oxidize. It is possible to produce liver oil without discoloration or generation of unpleasant odor.

[0025]

As described above, according to the present invention, the process for producing liver oil in a cold state at a low temperature of about 5 ° C. is carried out in a short time without refrigeration after capturing deep-sea sharks. Therefore, it is possible to maintain the freshness, thereby causing almost no unpleasant odor or generation of water, eliminating the need for deodorization or dehydration treatment by chemicals, and enabling the production of high-quality liver oil.

[Brief description of drawings]

FIG. 1 is an explanatory view showing a manufacturing process of the present invention.

[Explanation of symbols]

A liquid component 1 chopper 4 Cooling centrifuge 7 Filter 8 Antioxidant treatment tank

Claims (2)

(57) [Claims] 1. The liver of a deep-sea shark is crushed into a paste at a low temperature where the room temperature is set at around 5 ° C. to 8 ° C.,
Further, it is separated into an oily liquid component and a solid component by cooling centrifugal separation, impurities in the obtained oily liquid component are removed by filtration, and an antioxidant treatment is carried out, and a method for producing deep-sea shark liver oil. . 2. The method for producing a deep-sea shark liver oil according to claim 1, wherein at least one of deep-sea shark body, epidermis and bone is added to the liver and crushed into a paste.