CN1726785A

CN1726785A - Method of defatting and dedusting fish scale

Info

Publication number: CN1726785A
Application number: CN 200410055634
Authority: CN
Inventors: 八重樫彻
Original assignee: NIPPON ASARIE CO Ltd
Current assignee: NIPPON ASARIE CO Ltd
Priority date: 2004-07-30
Filing date: 2004-07-30
Publication date: 2006-02-01

Abstract

A method for removing fat and ash from fish scales to obtain high-quality collagen includes such steps as removing impurities, pressure steaming to remove fat, washing with ionic exchanging water, and adding the fish scales to the aqueous solution of hydrochloric acid while stirring for removing ash.

Description

The degreasing deashing method of fish scale

Technical field

The present invention relates to a kind of degreasing deashing method of fish scale, fish scale can become the raw material as useful collagen such as cosmetic material, various medical organism material, food material.

Background technology

In the past, employed collagen generally extracted from mammiferous collagen tissues such as ox or pig in various uses; but since BSE (so-called rabid ox disease) takes place; have away from from mammal, especially from the tendency of the collagen of ox, in recent years, obtained concern from the collagen of fish.Up to now, as known skin with seawater fishes such as flatfish or chum salmons is arranged is raw material from the collagen of fish, be that the collagen of raw material has the distinctive smell of fish with the skins of fish like this, there is restriction if consider its use level of unaccommodated smell, under the situation that is applied to cosmetics etc., can not give full play to the effect of the collagens such as improvement of moisture retention or skin.

Therefore, the present inventor has carried out wholwe-hearted research for the material that can cheap extract from the second best in quality collagen of fish, and it found that, covers in the squamas of fish body of the such fresh-water fishes of Tilapia mossambica, grass carp, silver carp to contain a large amount of the second best in quality collagen.

These fish scales contain about protein of about 40%, and about about 80% of this protein is useful collagen.But, in fish scale, except useful protein, approximately contain the ash content about 50% based on calcium phosphate.

Thereby,, need economy ground to remove and deash in order to be the useful collagen of initiation material separation and Extraction with the fish scale.In addition, contain lubricant component in the fish scale, in the collagen that extracts, produce white precipitate when containing these lubricant components, have the residual problem of fish smell simultaneously.

Summary of the invention

The object of the present invention is to provide a kind of degreasing deashing method of fish scale, be conceived to not have up to now value, the fish scale of the fresh-water fishes that the Tilapia mossambica that nearly all goes out of use, grass carp, silver carp are such, effectively separate and remove ash content and the lubricant component that contains in this fish scale, can obtain the second best in quality collagen with high yield.

Below discuss in detail the formation of the present invention that is used to achieve the above object.The present invention is the degreasing deashing method of fish scale, is made of following steps: first step, will from the fish body of the such fresh-water fishes of Tilapia mossambica, grass carp, silver carp, peel off the fish scale of recovery, and clean by ion exchange water, remove the foreign matter that is attached on the fish scale simultaneously; Second step after first step finishes, is measured fish scale in the cooker of packing at every turn in accordance with regulations, sends into steam under pressure in this cooker, separates and removes the lubricant component that contains in the fish scale; And third step, after second step finishes, after will being cleaned by ion exchange water by the fish scale of degreasing, it is measured in the input deliming process tank at every turn in accordance with regulations, in this deliming process tank, supply with aqueous hydrochloric acid solution, the agitator that utilization is arranged in the deliming process tank stirs, and separates and removes the ash content that contains in the fish scale.

Description of drawings

Fig. 1 is the block diagram of step 1 example of the degreasing deashing method of expression fish scale of the present invention.

The specific embodiment

Below, the concrete formation that present invention will be described in detail with reference to the accompanying.

The operation of the foreign matter that adheres in the removal fish scale of 1 expression first step among the figure, the cooker that carries out degreasing process of 2 expressions, second step.The 3rd, in cooker, send into the supply source of steam under pressure.The deliming process tank that carries out the deliming operation of 4 expression third steps, the hydrochloric acid storage box that 5 expressions are supplied with in the deliming process tank, the water supply source is gone up in 6 expressions.The 7th, in the deliming treatment fluid and case, 8 is the nertralizer case as caustic soda, by pipe arrangement in and supply nertralizer in the case 7.

[first step]

As the fish scale of the fresh-water fishes of raw material,, enter the operation of degreasing deliming after preferably taking at once in order to keep freshness.But under the temporary transient situation of preserving of having to, after preferably raw material being cleaned, drying is also preserved.Can be sneaked into more impurity in the fish scale of taking, thus preferred big impurity by visual removal, little impurity then utilizes the ion exchange water of neutral solution to clean removal.

[second step]

After the foreign matter that in the removal fish scale of first step as the aforementioned, adheres to, enter the degreasing process of second step.At this moment, with fish scale at every turn in accordance with regulations amount pack in the boiling pipe, and in the boiling pipe, send into steam under pressure and separate and remove the lubricant component that contains in the fish scale.The lubricant component fusing point that contains in the fish scale was lower, can utilize the steam under pressure stripping well that supplies in the boiling pipe, finished second step of degreasing process through about 1～2 hour processing.

Except the degreasing method that utilizes steam under pressure, for example can use ethanol, acetone and other organic solvent, alkali treatment liquid such as NaOH, potassium hydroxide, surface-active-treatment liquid such as nonionic surface active agent carry out.

[third step]

After second step finishes, clean by the fish scale of degreasing with the ion exchange water of neutral solution, afterwards it is measured in accordance with regulations at every turn and put in the deliming process tank, and in this deliming process tank, supply with aqueous hydrochloric acid solution, the agitator that utilization is arranged in the deliming process tank stirs, and separates and removes the ash content that contains in the fish scale.As the treatment fluid that in deliming, uses, except hydrochloric acid, can use the aqueous solution of ethylenediamine tetra-acetic acid, disodium ethylene diamine tetraacetate or tetrasodium ethylenediamine tetraacetate etc., but consider the preferred aqueous hydrochloric acid solution that uses from economic angle.In the deliming process tank, be provided with the agitator that drives by motor rotation, utilize this agitator that aqueous hydrochloric acid solution is contacted well with fish scale, to finish required deliming operation in about 15～20 hours.In addition, according to circumstances can repeatedly carry out this deliming operation and separate the ash content that contains in the removal fish scale.

The deliming treatment fluid is considered from the angle of environmental protection, imports to as shown in drawings in the neutralizing tank, utilizes the such nertralizer neutralization of caustic soda to carry out draining afterwards.

The invention effect

According to the present invention, from there not being value up to now, the fish scale of the fresh-water fishes that the Tilapia mossambica that nearly all goes out of use, grass carp, silver carp are such effectively separates and removes ash content and lubricant component, can obtain the second best in quality collagen with high yield.

Claims

1. the degreasing deashing method of a fish scale is characterized in that, is made of following steps:

First step will be peeled off the fish scale of recovery from the fish body of fresh-water fishes, clean by ion exchange water, remove the foreign matter that is attached on the fish scale simultaneously;

Second step after first step finishes, is measured fish scale in the cooker of packing in accordance with regulations at every turn, and send into steam under pressure in this cooker, separates and removes the lubricant component that contains in the fish scale; With

Third step, after second step finishes, clean by after the fish scale of degreasing by ion exchange water, with its at every turn in accordance with regulations the amount put in the deliming process tank, and in this deliming process tank, supply with aqueous hydrochloric acid solution, the agitator that utilization is arranged in the deliming process tank stirs, and separates and removes the ash content that contains in the fish scale.