JPH074206B2 - Manufacturing method of easily soluble buckwheat tea - 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 easily soluble buckwheat tea.

[0002]

2. Description of the Related Art Generally, buckwheat seeds are mainly composed of starch, and lysine, tryptone fan,
Contains high-quality proteins such as cystine, and further contains vitamins B such as thiamine and riboflamine, various minerals such as calcium, rutin that is effective in preventing arteriosclerosis and hypertension, and various other active ingredients such as linoleic acid and tocopherol. Is included. Therefore, foods using such buckwheat seeds have long been used as health foods.

By the way, as foods using buckwheat seeds, buckwheat noodles, buckwheat noodles, buckwheat porridge, buckwheat noodles, buckwheat tea, etc. are known. Among such buckwheat foods, soba tea has conventionally used a component obtained by extracting buckwheat seeds that have been heated and roasted with hot water. However, when such buckwheat tea is used, since the residue is discarded, there is a problem that the components (starch, protein, etc.) contained in the residue cannot be effectively used. Further, there is a problem that the treatment of the residue itself is troublesome.

On the other hand, buckwheat flowers contain active ingredients such as buckwheat nectar and rutin, and in particular, since rutin contains 50 to 100 times the amount of buckwheat seeds, it is considered as a promising source of rutin. ing. In addition, since buckwheat flowers are white and beautiful, they are not only used as ornamental flowers, but are also counted as one of the edible flowers.

In order to use buckwheat flowers as edible flowers, it is important to maintain the storability and shape. In order to improve the storage stability, there is a method of drying buckwheat flowers by a freeze-drying method or a hot-air drying method. However, the buckwheat flower that has been subjected to the drying treatment has problems such as a brittle shape and discoloration due to heat.

The present invention has been made in order to solve the above-mentioned conventional problems, and the buckwheat seed edible portion can be granulated and its components can be effectively used without discarding the buckwheat seed residue. An object of the present invention is to provide a method for producing an easily soluble buckwheat tea which is easily dissolved by boiling water, and a method for producing an easily soluble buckwheat tea containing a large amount of rutin and having a good shape and beautiful dry buckwheat tea. .

[0007]

[Means for Solving the Problems] A method for producing a readily soluble buckwheat tea according to the present invention is a method in which a hot water extraction component of a preheated buckwheat seed edible portion and a residue after extraction with hot water are decomposed by an enzyme, or A step of decomposing only the enzyme with an enzyme and further deactivating the enzyme,

[0008] The hot water extract component and the decomposition solution of the residue by enzymatic decomposition are pulverized by spray drying, or the hot water extract solution and the residue of the decomposition solution by enzymatic decomposition are pulverized by spray drying and then granulated. And a process.

The edible portion of buckwheat seeds is obtained by washing buckwheat seeds with water and removing the outer skin. As such buckwheat seeds, in addition to ordinary buckwheat seeds, Dattan buckwheat seeds can be used. In particular, Dattan buckwheat seed is useful because it contains more rutin than ordinary buckwheat seed. The buckwheat seed edible portion is roasted to add flavor and the like before being extracted with hot water, and is crushed to a desired particle size for facilitating hot water extraction.

[0010] The hot water extraction component and the residue after hot water extraction,
Alternatively, the enzymatic treatment of only the residue after extraction with hot water is carried out in order to reduce the insoluble component in the residue to a low molecular weight so that it is easily soluble. As such an enzyme, for example, α-amylase, protease or the like can be used. Regarding the concentrations of these enzymes, it is desirable to use them in a state of 0.2 to 2% in the case of α-amylase and 0.5 to 10% in the case of protease. The particle size of the granules obtained by pulverizing and then granulating by spray drying is preferably 0.2 to 1.0 mm.

In the method for producing easily soluble buckwheat tea according to the present invention, the buckwheat flower is immersed in alcohol or water containing 60% or more of alcohol, refluxed or distilled, and then the alcohol extract component is added to the flower. And a step of adding the dried buckwheat flowers to the granules prepared by the above-mentioned method.

The reason why the alcohol concentration of the alcohol-containing water is limited is that if the concentration is less than 60%, not only the water content absorbed by buckwheat flowers increases and the shape retention in the drying process deteriorates, but also discoloration occurs. Because it invites. A more preferable alcohol concentration is 80% or more.

[0013]

According to the present invention, the hot water extraction component of the preheated buckwheat seed edible portion and the residue after the hot water extraction are decomposed with an enzyme, or only the residue is decomposed with an enzyme to further deactivate the enzyme. Continuing, powdering the hot water extract component and the decomposition solution of the residue by enzymatic decomposition by spray drying, or powdering the hot water extract solution and the decomposition solution of the residue by enzymatic decomposition by spray drying, and then granulating. This makes it possible to granulate the buckwheat seed edible portion without waste of the residue of the buckwheat seed edible portion, to effectively use the components thereof, and to manufacture easily soluble buckwheat tea that is easily dissolved in hot water.

According to the present invention, the buckwheat flower is immersed in alcohol or water containing 60% or more of alcohol, refluxed or distilled, and then the extracted components are re-adsorbed to the flower to maintain the original shape of the flower. By drying and adding the dried buckwheat flower to the granules prepared by the method, a beautiful dried buckwheat flower containing a large amount of rutin and having a good shape is added, and the beautiful dried buckwheat flower can be viewed at the time of eating and drinking. A readily soluble buckwheat tea can be produced.

[0015]

EXAMPLES Examples of the present invention will be described in detail below. Example 1

[0016] First, the buckwheat seeds which had been washed with water and had their outer skin removed were heated with steam for 30 minutes to be gelatinized, and then dried at 50 ° C. Next, after roasting and crushing the soba seeds, 200 g
Add 1 liter of hot water per crushed product of
After adjusting the pH to 6.5, α-amylase was added to 0.5% concentration and reacted for 5 minutes for enzymatic decomposition, and the enzyme was inactivated at 100 ° C.

The amylase reaction decomposition solution was centrifuged to separate the supernatant and the residue. Add the desired amount of water to the residue, add protease to 0.5% concentration,
After reacting for 10 minutes for enzymatic decomposition, the enzyme was inactivated at 100 ° C., and further filtered and concentrated. Next, the enzymatically decomposed and deactivated extract and the concentrated solution of the residue subjected to the same treatment were pulverized by spray drying and then granulated to produce granular buckwheat tea. The buckwheat tea obtained 2.0
When g was put in a tea bowl and 100 ml of boiling water was poured, it was easily dissolved and it was possible to eat and drink buckwheat tea having a peculiar flavor.

After soaking the buckwheat flower in ethanol for 20 minutes so that ethanol was 100 ml per 5 g of the buckwheat flower, the extract was adsorbed on the buckwheat flower and dried to prepare a dry buckwheat flower. This buckwheat flower had the same shape and beauty as the fresh flower state. Then, the dried buckwheat flower was added to the granules obtained in Example 1 to produce buckwheat tea.

2.0 g of the obtained buckwheat granules and dried flowers
When 1 g was put in a tea bowl and 100 ml of boiling water was poured, the granules were easily dissolved, and buckwheat tea having a unique flavor of buckwheat could be eaten and drink with a beautiful buckwheat flower floating on the surface.

[0020]

As described in detail above, according to the present invention, the edible portion of buckwheat seed can be effectively used by granulating the edible portion of buckwheat seeds, and the easily soluble buckwheat tea is useful as a health food that is easily dissolved by boiling water. And a method for producing an easily soluble buckwheat tea containing a large amount of rutin and having a good shape and beautiful dry buckwheat flower added.

Claims (2)

[Claims] 1. A step of decomposing a hot water extraction component of a preheated buckwheat seed edible portion and a residue after extraction with hot water with an enzyme, or a step of decomposing only the residue with an enzyme to further deactivate the enzyme, Enzymatically decomposing the hot water extract component and the residue into a powder by spray drying, or spraying the hot water extract and the residue into an enzymatic decomposition solution into a powder by spray drying, and then granulating. A method for producing a readily soluble buckwheat tea characterized in that 2. A step of decomposing a hot water extraction component of a preheated buckwheat seed edible portion and a residue after extraction with hot water with an enzyme, or a step of decomposing only the residue with an enzyme and further deactivating the enzyme, A step of granulating the hot water extract component and the decomposition solution of the residue by enzymatic decomposition by spray drying, or a step of granulating the hot water extract solution and the decomposition solution of the residue by enzymatic decomposition by spray drying, and then granulating; Soaking the flower in alcohol or water containing 60% or more of alcohol, refluxing or distilling it, and then adsorbing the alcohol extract component to the flower again, and drying the flower while keeping the original shape of the flower. And a step of adding the dried buckwheat flower to the granules.