JP2010233497A - Extract from soybean curd refuse - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an extract from soybean curd refuse, for reducing a waste cost of soybean curd refuse as industrial waste, and achieving various effects. <P>SOLUTION: This extract from soybean curd refuse is obtained by putting soybean curd refuse 102 into a beaker 101 followed by adding ethanol 103, and extracting soluble content followed by filtering. The extract contains fat and protein contained in soybean curd refuse, and furthermore, can be a raw material of biodiesel fuel by extracting fat. Since toxicity of ethanol is extremely low, and useful substances such as isoflavone are contained in the extract, the extract achieves various effects by intermixing with drink and cosmetics. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an extract from okara, and in particular, reduces the disposal cost of okara as industrial waste, and aims at various effects in the possibility of diversion to biodiesel fuel, mixing in cosmetics, beverages, and the like. It relates to an extract from Okara.

  Okara itself is used for food, but it also has the character of industrial waste generated in large quantities during the production of tofu. Okara is generated as waste. The cost of disposal of Okara as waste currently costs about 20,000 yen per ton, and various studies have been conducted on the effective use of Okara. For example, Patent Document 1 discloses a method for producing an oil-containing okara by mixing okara and oil, dispersing the mixture in an aqueous solvent, and removing the solvent.

JP-A-5-336915

  In the technique described in Patent Document 1, it is necessary to mix saturated fatty acid, unsaturated fatty acid, and the like into okara, and there is a problem that it is not commensurate with cost.

  The present invention has been made in view of the above points, and reduces the cost of disposal of okara as industrial waste, which can be diverted to biodiesel fuel, mixed in beverages, cosmetics, and the like. The object is to provide an extract from Okara that can be effective.

  In order to solve the above-mentioned problems, the extract from okara according to the present invention is characterized in that it is obtained by adding ethanol to okara, extracting a soluble component, and filtering to remove ethanol.

  In the present invention, ethanol is added to okara to extract soluble components, and ethanol is removed to obtain an extract. This extract contains fat and protein contained in okara, and if the fat is further extracted, it can be used as a raw material for biodiesel fuel. The possibility of obtaining various effects such as contamination of cosmetics and cosmetics can be expected. On the other hand, after the extract is obtained, industrial waste is reduced, so that the cost of discarding Okara as industrial waste can be reduced.

  When extracting the soluble component, the sample can be set to 50 ° C. to 60 ° C. However, the extraction conditions are not limited to this, and more effective components can be extracted by heating and refluxing at a higher temperature. I can also expect that. The extraction time can be, for example, 1 hour. This is because when ethanol is used, it is considered that the active ingredient can be extracted in a relatively short time, but it is needless to say that a longer time may be used.

  Furthermore, when moisture is removed, it can be used as a health food as well as mixed into beverages and cosmetics. Furthermore, extraction with an organic solvent that dissolves fat can be a suitable raw material for biodiesel fuel.

  The method for producing an extract from okara according to the present invention is obtained by adding ethanol to okara and extracting a soluble component, a filtration step for filtering the product obtained in the extraction step, and filtering. And an ethanol removal step of removing ethanol from the filtrate.

  According to the extract from Okara according to the present invention, the cost of discarding Okara as industrial waste can be reduced, and various effects can be achieved.

It is a figure for demonstrating acquisition of the extract from the okara in embodiment of this invention. It is a figure for demonstrating acquisition of the extract in embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram for explaining acquisition of an extract from okara in the present embodiment. In this embodiment, 100 grams of okara 102 is put into a beaker 101, and 500 ml of ethanol 103 is added. Ethanol was used as the solvent because of its low toxicity, and as a result of the experimental implementation, ethanol was colored in a short time and the active ingredients in okara could be extracted in a relatively short time. It depends.

  Then, the active ingredient was extracted for about 1 hour while thoroughly stirring the sample using a glass rod 104 from 50 ° C. to 60 ° C. in a water bath (not shown in FIG. 1).

  Thereafter, as shown in FIG. 2, the particles of okara were scraped using a funnel 106 provided with a filter paper 105, and an extract 108 from okara was obtained in a beaker 107. Thereafter, ethanol was removed by hot water in a gas stove to obtain an extract sample for analysis. The filtration is not limited to the method using the ordinary funnel 106 as shown in FIG. 2. If the filtration is performed under reduced pressure, more active ingredients can be extracted, the residue is washed with ethanol, and the extract is further removed. Of course, it may be obtained.

  Next, the analysis result of the obtained extract sample will be described. In the present embodiment, measurement of fat content and measurement of protein content were performed. For the measurement of the fat content, a chloroform / methanol mixed liquid extraction method, which is generally said to be suitable for soybeans and processed soybean foods, was used. For the measurement of protein content, the macro modified Kjeldahl method used for all foods was used.

  As a result of analysis, the maximum amount of fat extracted from 100 g of okara was 0.79 g, and the maximum amount of protein extracted from 100 g of okara was 0.089 g. Note that the fat content measurement sample and the protein content measurement sample were prepared separately, and also due to differences in the types of okara (mainly differences in raw soybeans and differences in the production method of tofu) Content and protein content may vary. Therefore, it should be noted that the scope of the present invention is not limited to the measurement results described above.

  In addition, fat content, protein, etc. contained in Okara's ethanol extract may change depending on the extraction time and extraction conditions (for example, heating and refluxing). As a result, there is a high possibility that it will contribute to the reduction of Okara disposal costs. Ethanol has low toxicity, and the extract can be mixed with various products such as beverages and cosmetics to achieve an effect. Further, if extraction processing is further performed with an organic solvent that dissolves fat, it can be used as a raw material for biodiesel fuel.

  The present invention can be applied to, for example, utilization of an extract from okara.

101, 107 Beaker 102 Okara 103 Ethanol 104 Glass rod 105 Filter paper 106 Funnel 108 Extract from Okara

Claims (11)

  An extract from okara, which is obtained by adding ethanol to okara and extracting the soluble component, followed by filtration to remove ethanol. The extract from okara according to claim 1, wherein the temperature during extraction of the soluble component is set to 50 to 60 ° C. Furthermore, the water | moisture content was removed, The extract from the okara of Claim 1 or 2 characterized by the above-mentioned. The extract from okara according to any one of claims 1 to 3, further extracted with an organic solvent that dissolves fat. A biodiesel fuel produced from the extract from okara according to any one of claims 1 to 4. A beverage comprising the extract from okara according to any one of claims 1 to 4. A cosmetic product comprising the extract from okara according to any one of claims 1 to 4. An extraction step of adding ethanol to okara and extracting soluble components;
A filtration step of filtering the product obtained in the extraction step;
And an ethanol removal step of removing ethanol from the filtrate obtained after filtration. A method for producing an extract from okara. In the said extraction process, temperature is 50 to 60 degreeC. The manufacturing method of the extract from the okara of Claim 8 characterized by the above-mentioned. Furthermore, the water removal process which removes a water | moisture content is included. The manufacturing method of the extract from the okara of Claim 8 or 9 characterized by the above-mentioned. Furthermore, the fat content extraction process which extracts a fat content with the organic solvent which melt | dissolves a fat content is included. The manufacturing method of the extract from the okara in any one of Claim 8 to 10 characterized by the above-mentioned.

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