JPS5889186A - Deodorization of deep-sea fish oil - Google Patents

Abstract

PURPOSE:To remove the fishy smell of deep-sea fish oil, in high efficiency, keeping the melting point and other physical properties unchanged, by treating the oil with yeast or yeast and an aqueous solution of saccharides. CONSTITUTION:A deep-sea fish oil is brought into contact with >=10wt%, preferably 20-50wt% baker's yeast and yeast cells such as moistened dry yeast for 3-6hr, or with >=10wt% yeast cells and 50-100wt% aqueous solution of saccharides having a concentration of 5-50wt%.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for deodorizing deep-sea fish oil, which is characterized by treating oil obtained from deep-sea fish with yeast or an aqueous solution of yeast and sugar.

Traditionally, natural oils have been widely used as base materials for cosmetics, but
Among them, fish oil has a fishy odor unique to fish, so the fact is that it is hardly used as a raw material for cosmetics compared to vegetable oils and the like.

This is because an excellent deodorizing method for fish oil has not been found, and by developing this method, it is expected that it will be used dramatically as an oil for cosmetics and the like.

Conventionally, various studies have been made for this purpose.

For example, the best method is to harden fish oil, but this method changes the melting point and is not suitable for use as a cosmetic oil.

The present inventors discovered that treating fish oil with yeast, an aqueous saccharide solution, etc. is effective for fish oil, especially deep-sea fish oil, and that the fishy odor can be easily and efficiently removed while maintaining the physical properties of the oil. The present invention has now been completed.

That is, the present invention provides: (1) A method for deodorizing deep-sea fish oil, which comprises treating the deep-sea fish oil with yeast.

(2) A method for deodorizing deep-sea fish oil, which is characterized by treating deep-sea fish oil with yeast and an aqueous sugar solution.

It provides:

(Margin below) The configuration of the present invention will be explained below.

The deep-sea fish used in the present invention refers to fish that can live more than 200 ha below the ocean surface, and these fish are adapted to a dark world with great water pressure.

Specifically, known species include orange roughfish, Paramura 1 escolar, Kusajihikarikinmedai-ri p. The feature is that it is included in

For example, Orange Ruffy is a deep-sea fish below the hooom that is caught in specific waters near New Sealant, and has a pale yellow, transparent oil between its skin and flesh.

This oil (hereinafter referred to as orencilla or fee oil) is a pale yellow transparent liquid wax, with 88% aSS to a4t esters, 7.6% triglycerides, 0 and some other free fatty acids, and free and free alcohols. , sterol,
Contains phospholipids 0 Of these, phospholipids, glycerides of highly unsaturated fatty acids, and tannin contained as impurities are responsible for the fishy odor characteristic of orensilla and fi oil.

When carrying out the method of the present invention, yeast is added to deep sea fish oil and mixed by shaking or stirring. Mixing time is also a short time. Thereafter, the deodorized oil is separated and recovered using methods such as centrifugation and filtration.

The yeast used in the present invention refers to yeast cells cultured in a culture solution containing sugar. Easily available products include baker's yeast and dried yeast from the Japanese Pharmacopoeia. Commercially available products include fresh yeast and dry yeast, but as long as dry yeast is moistened, the same effect as fresh yeast was observed. ``Indicates both.

In the present invention, if the amount of yeast added is at least part by weight of deep-sea fish oil, the deodorizing effect will be recognized, but preferably the amount is between part by weight and part by weight. In addition, when adding water, it is sufficient to moisten the dry yeast (dry yeast: water - 1:1 weight ratio) or more. More effects can be seen.

A treatment time of 3 to 6 hours is also sufficient.

When adding yeast and a sugar aqueous solution as a deodorizing treatment agent, the amount to be added is deep-sea fish oil←On the other hand, yeast can be deodorized by adding W parts by weight or more, and sugar aqueous solutions by adding 50 to 100 parts by weight of sugar aqueous solution. The effect is recognized.

The saccharides used in the present invention include glucose, 7-lactose, maltose, sucrose, starch hydrolyzate, and the like.

(The following is a blank space) As described above, the present invention is an excellent method for deodorizing deep-sea fish oil, which can remove the fishy odor of deep-sea fish oil in an extremely simple manner.

The present invention will be described in detail below with reference to practical examples.Example L: Add 109 to 50 g of orencilla, Nofi oil, and yeast, and shake at (to) °C for 1 hour. After removing the oil, centrifugation (3000 rpm) was carried out to recover the deodorized orange roughy oil in the upper layer.The deodorizing effect was examined through a sensory test, and the results shown in Table 1 were obtained.The numbers in the table below indicate the deodorizing effect. represent.

[Level of fishy odor] - ○: Not at all 1: Hardly any 2: Slightly odor 3: Smell 4 = Quite odor 6: Very odor Table 1 As shown in Table 1, orange roughy oil By treating with yeast, it was possible to obtain deodorized orange roughy oil with almost no fishy odor.

For 100 liters of orange roughy oil, ~2 for yeast
0 g and 509 to 100 g of a 5% to 50% aqueous sugar solution were added and stirred at X''C for 4 hours.

After shaking, centrifuge and collect the upper layer of deodorized orange roughy oil. Table 2 shows the deodorizing effect.

As is clear from Table 2, by treating orange roughy oil with yeast and an aqueous saccharide solution, it is possible to obtain deodorized orange roughy oil, which is excellent as a cosmetic base material and has no fishy odor, in an extremely short period of time. I'm so excited.

(Margin below)

Claims (2)

[Claims] (1) A method for deodorizing deep-sea fish oil, which is characterized by treating deep-sea fish oil with yeast. (2) A method for deodorizing deep-sea fish oil, which is characterized by treating deep-sea fish oil with yeast and an aqueous sugar solution.