JP6120531B2 - Method for producing hydrothermally-treated extract derived from sesame - Google Patents

Description

The present invention relates to material from sesame seeds production how hydrothermal treatment extract obtained by hydrothermal treatment, the hydrothermally treated extract sesaminol since containing sesaminol glycosides It is useful as a water-soluble natural antioxidant as a natural raw material that can be suitably used in fields such as foods, pharmaceuticals, quasi drugs, and cosmetics containing glycosides as an active ingredient.

  Sesame seeds contain water-soluble components having an effect of preventing lifestyle-related diseases such as anti-cholesterol, anti-arteriosclerosis and antioxidant ability. Various components are known, and in particular, sesaminol is well known. Sesaminol is present in sesame seeds in the form of glycosides bound with sugar, and techniques for effectively extracting these glycosides from sesame seeds have been developed. Sesaminol glycosides contained in sesame seeds are soluble in water or lower alcohols, and sesame seeds are extracted with water, ethanol, or a mixed solvent thereof. Separation of sesaminol glycosides from selenium has been carried out.

For example, sesame seed triglucoside useful as a raw material for food, medicine, cosmetics, etc. from defatted sesame seeds can be selected from sesame seeds, water, ethanol, or ethanol water as a simple method with high purity and high recovery. The solvent-soluble component containing sesaminol triglucoside is extracted using the solvent obtained, the obtained extract is brought into contact with activated carbon to adsorb a part of the solvent-soluble component to activated carbon, and then from the adsorbed component A method for producing sesaminol triglucoside characterized by collecting sesaminol triglucoside (Patent Document 1), a step of extracting a defatted sesame plant with water, a hydrophilic organic solvent or a mixed solvent thereof, porosity The process of elution of water, alcohol, and acetone in the order of resin, using water, organic solvent or a mixed solvent as mobile phase A sesaminol glycoside represented by a specific structural formula by a step of adsorbing with a dressing, and a step of isolating the eluate by liquid chromatography using water, a water-soluble solvent or a mixed solvent thereof as a mobile phase A manufacturing method using adsorption, such as a method of manufacturing a glass (Patent Document 2), has been proposed.
However, when a sesaminol glycoside is fractionated by a chromatographic technique, a high-purity substance is obtained. However, the process is complicated and requires a technique, so that it is not suitable for mass production.

In addition, lignan glycosides and sesaminol glycosides are produced from sesame seeds using an extract of water or hydrous alcohol using sugar hydrolase. For example, a solvent-soluble component containing sesaminol triglucoside is extracted from defatted sesame seeds using a solvent selected from water, ethanol or ethanol water, and the resulting extract is brought into contact with activated carbon to dissolve the solvent. A method for producing sesaminol triglucoside (Patent Document 3) is proposed, in which a part of the component is adsorbed on activated carbon and then sesaminol triglucoside is collected from the adsorbed component.
However, the production method using these enzymes is far from a practical level technology, such as enzyme materials such as β-glucosidase are expensive, and the fractionation by chromatography is not suitable for mass production. is there.

Furthermore, it is known that subcritical or supercritical water is used for extraction of active ingredients from sesame seeds. For example, there is a protein degradation product derived from sesame that has an inhibitory activity on angiotensin converting enzyme, which is the cause of hypertension, which is a typical lifestyle-related disease, and as a production method that can safely mass-produce this protein degradation product, it is derived from sesame seeds. A method for producing an antihypertensive agent comprising: mixing protein and water, hydrolyzing as a subcritical state with an ultimate temperature of 160 to 280 ° C. in 10 to 90 minutes, separating the liquid part, and drying the separated liquid part (Patent Document 4) or by reacting a lignan compound with water in a supercritical state in order to enhance antioxidant properties against radicals such as sesamin which is a lignan compound, a methylenedioxyphenyl group in the lignan compound is converted into a catechol group. It has been proposed that it is converted into a prominent antioxidant activity (Patent Document 5).
In this way, in the technology in which protein from sesame seeds and water are mixed and hydrolyzed as a subcritical or supercritical state, the active ingredient sesaminol glycoside is degraded and reduced by treatment in a high temperature region. In addition, there is a high possibility that active components such as other polyphenol components that are present are also decomposed, and there is a problem that the energy cost is high.

JP 10-287695 A JP 2002-322191 A JP-A-8-228793 JP 2011-84533 A JP 2001-139579 A

The present invention aims at and provide child a method for producing practical sesaminol glycosides in a simple resolving the problems the prior art has.

In view of the above-described prior art, the present inventors made a sesame-derived raw material and water mixture at a temperature of 100 to 155 ° C. while intensively researching and developing a simple and practical method for producing a sesaminol glycoside. The hydrothermally-treated extract obtained by keeping in the range for a short time has been found to contain a high concentration of sesaminol glycoside, and the present invention has been completed.
The present invention solves various problems of the prior art, and is water-soluble in sesame seeds and has an effect of preventing lifestyle-related diseases such as anticholesterol, antiarteriosclerosis and antioxidant ability. In particular, the present invention provides a hydrothermal treatment technique for efficiently extracting, from sesame seeds, a sesaminol glycoside in which sugar is bound to sesaminol in sesame seeds.

That is, this invention provides the manufacturing method of the hydrothermal-treatment extract containing the sesaminol glycoside of the following (1) thru | or (5).
(1) Hydrothermal treatment containing a sesaminol glycoside characterized by performing hydrothermal treatment in which a sesame-derived raw material and water are put into a pressure vessel and kept at a temperature range of 100 to 155 ° C. for 5 to 60 minutes. A method for producing an extract.
(2) Sesame-derived raw materials are sesame seeds, sesame seeds squeezed sesame seeds, roasted sesame seeds, sesame seeds roasted squeezed sesame seeds, sesame seeds squeezed cocoons, sesame seeds roasted squeezed sesame seeds The manufacturing method of the hydrothermal-treatment extract containing the sesaminol glycoside of said (1) which is 1 or more types chosen from a defatted lees.
(3) Hydrothermal extraction containing the sesaminol glycoside according to (1) or (2) above, wherein the sesaminol glycoside is a sesaminol glycoside in which 3 or less sugars are bound to sesaminol. Manufacturing method.
(4) The sesame according to any one of (1) to (3) above, wherein the hydrothermally treated extract containing sesaminol glycoside has a sesaminol glycoside content of 0.3 to 1.0% by weight. A method for producing a hydrothermally-treated extract containing a nor glycoside.
(5) A method for producing a hydrothermal treatment extract containing a sesaminol glycoside according to any one of (1) to (4), wherein the hydrothermal treatment is continuously performed a plurality of times.
(6) Hydrothermally treated extract containing sesaminol glycoside according to any one of (1) to (5) above, wherein the water content of the mixture of sesame-derived raw material and water is 75 to 90% by weight Manufacturing method.

According to the present invention, various problems in the prior art can be solved, and a sesame-derived raw material and water are mixed, put into a pressure vessel, and kept in a temperature range of 100 to 155 ° C. for 5 to 60 minutes. In addition, it is possible to efficiently produce a hydrothermally-treated extract containing a high concentration of sesaminol glycosides, and further exhibit excellent effects in practicality and mass productivity.
In addition, by mixing the raw material derived from sesame and water in a slurry state in advance, the mixture can be smoothly transferred, and the efficiency of hydrothermal treatment after being charged into the pressure vessel and after being charged can be increased. Furthermore, by holding in a slurry state for a predetermined time, the penetration of water into the raw material derived from sesame advances, and the efficiency of the hydrothermal treatment can be increased.
There is no need for high temperature and high pressure such as temperature and pressure close to the critical point of water used as a solvent, and there is no need to use expensive chemicals such as enzymes, and the reaction temperature is limited to the optimum temperature of the enzyme. Therefore, sesaminol glycosides can be economically extracted from sesame raw materials with high yield by a simple hydrothermal reaction.
Sesame seeds are water-soluble ingredients that have the effect of preventing lifestyle-related diseases such as anti-cholesterol, anti-arteriosclerosis, and antioxidant ability, and in particular, sesame seeds with saccharides bound to sesaminol. It is possible to provide a hydrothermal treatment technique for efficiently extracting a glucoside from sesame seeds.
Sesame-derived substances containing sesaminol glycosides can be used as hydrothermal treatment raw materials, and wastes such as sesame oil squeezed lees currently used for fertilizers and feed can be used effectively. .
Natural raw materials that can be suitably used in fields such as foods, pharmaceuticals, quasi drugs, and cosmetics containing sesaminol glycosides as active ingredients can be produced at low cost.

An outline of the hydrothermal treatment test apparatus is shown. The flow of the process of carrying out the two-stage hydrothermal treatment of the pressing paddle is shown. The properties of the solid part after hydrothermal treatment at 150 to 250 ° C. are shown. The relationship between hydrothermal treatment time and sesaminol glycoside recovery rate is shown.

  Sesame is used as a nourishing tonic in the field of herbal medicine, and has been regarded as an excellent traditional food that is effective in relieving fatigue, improving the beauty of skin and hair, improving milk output, rejuvenating, and constipation. Sesame seeds contain sesame lignans, the main constituents of which are sesamin, sesamorin, sesamol, sesaminol, sesaminol glycosides, among which sesaminol glycosides are contained in relatively large amounts. Sesame lignan, such as glycosides, is a minor component present in only about 1% of small seeds of sesame. When this glycoside enters the body, it is converted to sesaminol by the action of intestinal bacteria and absorbed from the intestinal tract, and has the effect of suppressing the oxidation of cells throughout the body, improving the antioxidant effect and liver function, cancer It is said to be good for health, such as prevention, aging prevention, and hangover prevention.

  For example, one of the causes of aging and canceration of cells is lipid peroxide, and lipid peroxide is generated by oxidation of lipid contained in a living body or food. Antioxidant effects of sesaminol have been confirmed by experiments using rabbit erythrocyte membranes and experiments to examine the protective effect of sesaminol against peroxidative damage in cultured human cells, and anti-aging and anticancer effects are expected. Yes. In addition, it has been confirmed that sesaminol has an action of preventing bad cholesterol that causes arteriosclerosis from accumulating in the body. Therefore, an effect equivalent to that of a hyperlipidemia drug can be expected. Furthermore, it is said that it has the effect of accelerating the decomposition rate of acetaldehyde, the cause of hangover, and reducing the burden on the liver.

In this way, sesaminol glycosides known as components useful for promoting human health are water-soluble and are soluble in water unlike other sesame lignans. Therefore, extraction with an aqueous medium such as a hydroalcoholic solvent is performed, and the extract is used as it is or after being subjected to a purification treatment. Sesaminol glycosides do not have antioxidant properties but are relatively more stable to heat than lignans with antioxidant properties, and about 0.2 to 2% by weight of sesame defatted lees. The seed contains about 0.1 to 1% by weight.
The present invention is a sesame, characterized in that a sesame-derived raw material containing sesaminol glycoside and water are mixed, put into a pressure vessel, and held at a temperature range of 100 to 155 ° C. for 5 to 60 minutes. This is a method for producing a hydrothermally treated extract containing a gnoglycoside, and can efficiently and economically extract sesaminol glucoside.

[Hydrothermal treatment test equipment]
An MMJ-500 type high-pressure microreactor manufactured by OM Labotech was used as an apparatus for performing the following tests. The material is SUS316, the internal volume is 500 ml (inner diameter 51 mm × height 260 mm), and as ancillary equipment, a stirring blade 2, a heater 3, a thermometer 4, a stirring blade driving motor 5, and a pressure gauge 6 are installed. An outline of the apparatus is shown in FIG.

[Relationship between hydrothermally extracted amount of sesaminol glycosides and hydrothermally extracted amount of all polyphenols]
In each hydrothermal treatment performed below, the content of the product sesaminol glycoside itself was quantitatively analyzed, or the content of sesaminol glycoside was estimated by quantitatively analyzing the concentration of total polyphenols. . In hydrothermal treatment, it has been confirmed from experiments that the concentration of sesaminol glycosides in hydrothermally extracted water shows the same tendency as the concentration of total polyphenols. Further, it has been proved by the measurement performed in advance that 10 to 30% by weight of sesaminol glycoside is contained in all the extracted polyphenols.

[Extracted sesame raw material]
As a raw material for extracting sesaminol, any raw material can be used as long as it is derived from sesame and contains sesaminol glycosides. In particular, as sesame-derived raw materials, sesame seeds and sesame seeds are compressed. It is preferably selected from cocoons, roasted sesame seeds, squeezed sesame seed roasted products, defatted pods of sesame seed squeezed lees, and defatted pods of sesame seed roasted products. Among them, the sesame-derived material is most preferably selected from defatted cocoons. By using these cocoons after oil extraction, the hydrothermal treatment effectively proceeds without the oil component being inadvertently mixed in the hydrothermal treatment extract. The most typical raw material is moss after harvesting sesame oil, which contains 0.2 to 2% sesaminol glycosides.

[Extraction solvent]
For extraction, water or a mixture of a hydrophilic organic solvent and water is used as the extraction solvent. For example, lower alcohols having 1 to 3 carbon atoms such as methanol, ethanol, propyl alcohol and isopropyl alcohol; lower aliphatic ketones such as acetone and methyl ethyl ketone; 2 to 5 carbon atoms such as 1,3-butylene glycol, propylene glycol and glycerin A mixed solvent of water and a hydrophilic organic solvent such as polyhydric alcohol can be suitably selected and used depending on the field of food, pharmaceuticals, quasi drugs, cosmetics, and the like. In the food field, a mixed solvent of water and a hydrophilic organic solvent can be used. Of these, ethanol can be suitably used among the lower alcohols, and it is preferable to add 1 to 90 parts by mass (1 to 90% by weight) with respect to 100 parts by mass of water.

[Hydrothermal treatment temperature and time]
A mixture of the sesame-derived raw material and the extraction solvent is put into a pressure vessel, and the temperature range is maintained within 100 to 155 ° C. for 5 to 60 minutes, preferably 10 to 60 minutes. Hydrothermal treatment temperature is kept above the boiling point of the solvent. The sesame-derived material once extracted with hydrothermal treatment may be mixed with water again and kept at 100 to 155 ° C. for 5 to 60 minutes, preferably 10 to 60 minutes to produce a hydrothermal treatment extract. Good. Furthermore, this process may be carried out continuously for a plurality of steps. By performing a plurality of steps, it is possible to extract most of the sesaminol glycoside from the sesame-derived raw material as a hydrothermal treatment extract. Especially, in the manufacturing method of the said hydrothermal treatment extract, it is preferable to hold | maintain a temperature range at 140-150 degreeC for 30-40 minutes. By performing hydrothermal treatment in this range, the content of sesaminol glycoside, which is an active ingredient contained in the aqueous solution portion, is increased.
Table 1 shows the relationship between the hydrothermal treatment temperature and the concentration of sesaminol glycoside in the extract.

  The hydrothermal treatment temperature is most effectively extracted in the range of 140 to 150 ° C. On the other hand, when the temperature is higher than 155 ° C., the decomposition of sesaminol glycosides due to heat becomes significant, and the extraction rate decreases. On the other hand, when the hydrothermal treatment temperature is lower than 100 ° C., the extraction efficiency is lowered and a long time is required for extraction, which is not practical.

So far, production of antihypertensive agents that hydrolyze sesame-derived proteins in an aqueous system at 160 to 280 ° C. (Patent Document 4), and lignan compounds with water in a supercritical state (from 374 ° C. to 221 atm.) A method for producing a lignan-based antioxidant that converts a methyloxyphenyl group to a catechol group by reaction (Patent Document 5) is known, but a high temperature of 100 to 155 ° C. is used for extraction of sesaminol glycosides. There were no known examples.
The hydrothermal treatment time is determined in consideration of the concentration of sesaminol glycoside in the solvent or the extraction efficiency, but a sufficient extraction rate cannot be obtained in a short time, and a long time extraction is performed at a high temperature. Therefore, the hot water treatment time for a long time at a low temperature and a short time for a high temperature is preferable, and the extraction conditions are appropriately selected in relation to the raw materials. Table 2 shows the treatment time at hydrothermal treatment temperatures of 140 and 150 ° C. and a moisture content of 85% and the concentration of sesaminol glycoside in the extract.

[Combination ratio of sesame raw material and water (water content)]
In the production of the hydrothermal extract of the present invention, when the sesame-derived raw material and water are mixed, the water content of the mixture is preferably 75 to 90% by weight. If the moisture content is less than 75%, the sesame-derived material may be inadvertently burnt during the hydrothermal treatment. In addition, when the water content exceeds 90% by weight, the content of sesaminol glycoside, which is an active ingredient contained in the hydrothermally-treated extract obtained after hydrothermal treatment is reduced, and the subsequent concentration step is performed. There is a risk that the efficiency may decrease.
Table 3 shows the relationship between the mixture ratio of the squeezed rice cake and water and the total polyphenol concentration in the hydrothermal treatment liquid. From this result, the tendency that the total polyphenol concentration contained in the filtrate of the hydrothermal treatment extract increases as the water content decreases is observed. Considering the subsequent steps such as concentration and purification, the total polyphenol concentration in the filtrate is preferably about 2000 ppm or more.

[Hydrothermal extract]
The hydrothermally treated extract obtained by drying the hydrothermal extraction treatment liquid obtained in the present invention contains 0.3 to 1.0% by weight of sesaminol glycoside depending on hydrothermal treatment conditions. The hydrothermally treated extract containing the obtained sesaminol glycoside can be converted to a higher concentration by a solvent concentration operation. Further, it can be highly purified through a purification step.
The hydrothermal treatment extract of the present invention mainly contains sesaminol glycosides to which 3 or less sugars are bound. This was found by analyzing the hydrothermally treated extract by HPLC (high performance liquid chromatography).

[Efficiency of hydrothermal treatment by two-stage treatment]
After the hydrothermal treatment (first-stage hydrothermal treatment) is completed, the squeezed koji and the extract are separated by suction filtration, and the same amount of water is newly added to the squeezed koji after the separation to perform hydrothermal treatment (second-stage hydrothermal treatment). ) A flow chart of the two-stage hydrothermal treatment is shown in FIG. The amount of the total polyphenol contained in the filtrate in each step was measured, and the ratio of the total polyphenol with respect to the weight of each pressed paddle was shown in Table 4 as the recovery rate.
The lower the water content, the higher the total polyphenol concentration in the filtrate. However, in the relationship between the total amount of all the polyphenols contained in the filtrate and the used squeezed koji, the lower the moisture content, the lower the recovery rate.

[Usage]
The hydrothermal reaction product containing sesaminol glycoside obtained by the present invention has one or more functions selected from anticholesterol, antiarteriosclerosis and antioxidant ability, and is a food, pharmaceutical, quasi-drug, or It is a material that can be suitably used in the field of cosmetics and the like, and is used for foods, pharmaceuticals, quasi-drugs, and cosmetics without any processing, or by purification and concentration. Used as a cholesterol agent, anti-arteriosclerotic agent, or antioxidant. The sesaminol glycoside produced in the present invention has no problem in the original characteristics required when applied to these uses, and in other aspects such as stability to heat and light, taste and smell. .
The food to which the sesaminol glycoside produced according to the present invention can be applied is not particularly limited. For example, beverages such as soft drinks, carbonated drinks, nutrition drinks, fruit drinks, and lactic acid drinks; ice cream, ice sherbet, shaved ice, and the like Noodles such as buckwheat, udon, harusame, gyoza skin, sushi mai, noodles such as Chinese noodles and instant noodles; rice cakes, candy, gum, chocolate, tablet confectionery, snack confectionery, biscuits, jelly, jam, cream, baked confectionery, etc. Processed foods such as kamaboko, ham and sausage; dairy products such as processed milk and fermented milk; processed oils and fats such as salad oil, tempura oil, margarine, mayonnaise, shortening, whipped cream and dressing; Seasonings such as sauces and sauces; various forms of health and nutritional supplements; Other soups, stews, salads, prepared foods, such as pickles and the like.

In addition, the sesaminol glycoside produced according to the present invention is orally ingested, such as tablets, capsules, drinks, troches, gargles, and other drugs, quasi-drugs, mouth fresheners, oral malodors, and the like. It can be used by being added to an oral refreshing agent, dentifrice and the like used inside.
Furthermore, it can be used by adding to skin care cosmetics such as skin lotion, milky lotion, various cosmetic creams, cosmetic liquids, packs, and cleaning agents, makeup cosmetics such as lipsticks and foundations, which are directly applied to the skin.

  The intake amount of sesaminol glycoside is 0.01 to 1000 mg, preferably 1 to 500 mg per day for an adult. When the daily intake of sesaminol glycoside is less than 0.01 mg, the effect cannot be exerted, and when it exceeds 1000 mg, there is a possibility that an excessive amount is consumed.

EXAMPLES Next, although an Example demonstrates this invention concretely, this invention is not limited by a following example.
In the following examples, the content of sesaminol glycoside in the hydrothermally treated extract was determined by HPLC analysis.
[HPLC analysis conditions]
Column: Inertsil ODS-3
Inner diameter 4.6 mm × 250, 5 μ (manufactured by GL Sciences Inc.)
Mobile phase: 70% linear gradient of 10% ⇒ 90% methanol aq Flow rate: 1 ml / min
Wavelength: 290nm
Temperature: 30 ° C
Standard product: Calculate sesaminol glycoside amount from sesamin

[Effect of hydrothermal treatment time and temperature]
A high-pressure microreactor shown in FIG. 1 was used as a hydrothermal test device, and cocoons obtained by squeezing and extracting sesame oil after roasting were used as defatted sesame seeds as a raw material for extracting glycosides by hydrothermal treatment.
In the hydrothermal treatment, a predetermined sample and water are put into the apparatus, and then stirring and heating are started. After reaching a predetermined temperature, hydrothermal treatment was performed for a predetermined time. The total polyphenol concentration of the filtrate obtained by filtering the hydrothermally treated product was measured by the foreign thiocult method. Sesaminol glycosides, proteins, saccharides and the like were also analyzed to evaluate the hydrothermal treatment of the present invention.

A sample prepared by mixing 40 g of sesame pressing lees and 228 g of water and adjusting the water content to 85% was hydrothermally treated at a temperature of 30 ° C. to 150 ° C. for 5 minutes and 60 minutes. After hydrothermal treatment, it was filtered through a filter having an opening of 45 μm, and the concentration of sesaminol glycoside contained in the filtrate is shown in Table 1. As shown in Table 1, it was found that the sesaminol glycoside in the hydrothermal treatment liquid increased as the treatment temperature increased at any treatment time.
As a result of the test, it was found that sesaminol glycoside was extracted and the yield was 34 to 49%.

[Relationship between moisture content and total polyphenol concentration in treated liquid after hydrothermal treatment]
The mixing ratio (water content) of sesame squeezed koji and water was changed from 75% to 90%, hydrothermally treated under conditions of a temperature of 150 ° C. and a treatment time of 40 minutes, and the total polyphenol concentration was measured. The results are shown in Table 3. It was found that the lower the water content, the higher the total polyphenol concentration contained in the hydrothermally treated filtrate. The total polyphenol concentration in the filtrate is preferably about 2000 ppm or more (200 ppm or more as a sesaminol glycoside).

[Comparative Example 1]
Hydrothermal treatment was performed in the same manner as in Example 1. Table 5 shows experimental conditions and experimental results. Under the condition where the treatment temperature is 150 ° C. or higher, the decomposition of sesaminol glycoside starts, and finally the sugar is removed to become sesaminol. The sesaminol in the extract is immediately oxidized and cannot be detected. In addition, although extraction was tried using the mixed solvent (4 times amount) of chloroform: methanol = 9: 1 from the solid part of the pressing cake after processing at 200 degreeC and 250 degreeC, sesaminol glycoside is almost It was not detected. Sesaminol was detected but could not be analyzed stably because of its rapid oxidative degradation.
The state of the solid part after hydrothermal treatment is shown in FIG. Under a temperature condition of 150 to 160 ° C., the solid part was decomposed and became a paste, but when it reached a high temperature of 200 to 250 ° C., not only the decomposition but also the polymerization reaction proceeded to become a black paste.

[Hydrothermal treatment by two-stage treatment]
After the first-stage hydrothermal treatment, a two-stage treatment was performed in which the squeezed residue and the filtrate were separated by suction filtration, followed by hydrothermal treatment (second-stage hydrothermal treatment) in which water was newly added to the squeezed residue. The flow is shown in FIG. 2 and the analysis results are shown in Table 4. The conditions of the first stage are 75, 80, 85, 90% of the moisture content of the pressed rice cake, the processing temperature is 150 ° C., the processing time is 40 minutes, and the second stage is renewed with the same amount of water as the first stage filtrate. In addition, the temperature was 150 ° C. and the treatment time was 40 minutes. In any step, the lower the water content, the higher the total polyphenol concentration in the filtrate. However, it was found that the content (recovery rate) of all polyphenols contained in the filtrate with respect to the amount of squeezed koji decreased as the water content decreased.

  It was confirmed that sesaminol glycosides can be extracted by hydrothermal treatment. Hydrothermal extraction was performed at 150 ° C or 140 ° C for 10-60 minutes. Hydrothermal treatment was carried out using a pressing koji containing 0.3% of sesaminol glycoside as a raw material and a moisture content of 85%. The results are shown in FIG. When hydrothermal treatment for 50 minutes or longer at high temperature was performed, the yield of sesaminol glycosides started to decrease. This is thought to be due to the thermal decomposition of sesaminol glycosides. The recovery rate of sesaminol glycosides in the concentrated dried product was in the range of about 30-50% as described in FIG.

  The present invention relates to a hydrothermally-treated extract obtained by hydrothermally treating sesame seeds and a method for producing the same, and a sesaminol glycoside can be easily and economically produced by hydrothermal treatment. Accordingly, a water-soluble natural antioxidant is provided as a natural raw material that can be suitably used in the field of foods, pharmaceuticals, quasi drugs, cosmetics and the like containing sesaminol glycoside as an active ingredient. be able to.

1: Sample 2: Stirring blade 3: Heater 4: Thermometer 5: Stirring blade drive motor 6: Pressure gauge

Claims (6)

Sesame is characterized in that a sesame-derived raw material and water are put into a pressure vessel and hydrothermal treatment is performed for 5 to 60 minutes in a temperature range of 100 to 155 ° C (excluding 100 ° C) under pressure. A method for producing a hydrothermally-treated extract containing a nor glycoside.   Sesame seeds are sesame seeds, sesame seeds squeezed sesame seeds, roasted sesame seeds, sesame seeds roasted squeezed sesame seeds, sesame seeds squeezed cocoon The method for producing a hydrothermally-treated extract containing the sesaminol glycoside according to claim 1, wherein the hydrothermally-treated extract is one or more selected from the group consisting of:   The method for producing a hydrothermally treated extract containing a sesaminol glycoside according to claim 1 or 2, wherein the sesaminol glycoside is a sesaminol glycoside in which 3 or less sugars are bound to sesaminol.   The hydrothermally-treated extract containing sesaminol glycoside has a sesaminol glycoside content of 0.3 to 1.0% by weight, containing the sesaminol glycoside according to any one of claims 1 to 3. To produce hydrothermal extract.   The manufacturing method of the hydrothermal treatment extract containing the sesaminol glycoside in any one of Claim 1 to 4 which performs a hydrothermal treatment continuously several times. The method for producing a hydrothermally-treated extract containing a sesaminol glycoside according to any one of claims 1 to 5, wherein the water content of the mixture of sesame-derived raw material and water is 75 to 90% by weight.