KR101626826B1 - System and method for processing of coffee beans - Google Patents

Abstract

A coffee bean processing system and method are provided. A coffee bean grind processing system according to an embodiment of the present invention includes a first drying unit for adjusting a first moisture content of a coffee bean sprout, a spraying unit for spraying a rice hull extraction water to the coffee bean delivered from the first drying unit, And a second drying unit that is included in the stirring unit and adjusts a second moisture content of the stirred coffee bean sprouts.

Description

TECHNICAL FIELD [0001] The present invention relates to a coffee bean processing system,

The present invention relates to a coffee bean processing system and method, and more particularly, to a coffee bean processing system and method that improves the flavor and shelf life of coffee beans using rice hull extraction water.

Recently, as coffee consumption has increased, interest in processing and distribution of coffee bean has increased. The processing method of coffee is divided into dry method and wet method according to area, humidity, sunshine and water supply. In the dry method, the coffee beans are separated from the dried beans after drying, but in the wet method, the beans are separated from the cherry and dried.

Dried green beans are sorted according to their size, density, water content (water content), and color (defect two). According to the criteria of Specialty Coffee Assosiation of Amercaica (SCAA), the moisture content is 9 ~ 14%.

Coffee cherries consist of outer skin, pulp, pachment, silver skin, green bean. In particular, the silver skin is like a white vinyl membrane located between green beans and pachments. If the silver skin is not sufficiently removed during the coffee processing process, the silver and the sour taste are excessively emphasized during the production of the coffee, do.

Korean Patent Laid-Open Publication No. 10-1994-0020924

Conventional processing methods such as dry method and wet method generally remove the parchment of coffee cherry well, but the silver skin surrounding green bean can not be effectively removed, and the silver skin is removed by heat during the roasting process after purchasing green bean.

If you do not apply enough heat or remove a silver skin by a person who is not a skilled expert in the process of removing silver skin by roasting, you will not be able to remove enough silver skin and you will not be able to remove smoke and silver skin by- There was an inconvenience to handle.

Therefore, there is a need for a method to effectively remove the silver skin.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a coffee bean sprout system and method capable of effectively removing silver skins on a green bean surface and reducing smoke and by- .

It is another object of the present invention to provide a coffee bean processing system and method for enhancing flavor in the production of coffee beverage by adsorbing rice hull extract water to fresh beans.

The technical objects of the present invention are not limited to the above-mentioned technical problems, and other technical subjects not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a coffee bean processing system including a first drying unit for adjusting a first moisture content of a coffee bean, And an agitating portion for agitating the coffee bean including the spraying portion for spraying the rice husk extracting water and the sprayed rice husk extracting water.

The first moisture content may be 10 wt% or less, and the second moisture content may be 8 to 15 wt%.

The jetting unit may include an extraction water generating unit for producing the rice hull extraction water.

The extraction water producing unit mixes the ginseng extract water with the rice hull extraction water to produce mixed extraction water. The mixed extraction water is a mixture of 100 parts by weight of the rice hull extraction water and 1 to 100 parts by weight of the ginseng extract water have.

The number of the rice husks extracted from the jetting part may be 1 to 50 parts by weight based on 100 parts by weight of the coffee bean.

The system further includes a second drying unit and a dry cleaning unit, wherein the second drying unit adjusts a second moisture content of the agitated coffee beans, and the dry cleaning unit includes a The by-products can be washed dry.

According to an aspect of the present invention, there is provided a method of processing coffee bean, comprising: drying a coffee bean having a first moisture content; spraying a rice hake extract water onto the dried coffee bean; Agitating the sprayed rice husk extract water and the coffee bean sprouts, and drying the stirred coffee bean so as to have a second moisture content.

The first moisture content may be greater than 0 wt% and less than 10 wt%.

The injecting step may include generating the rice husk extracts.

Wherein the mixing step further comprises mixing the ginkgo biloba extract water with the ginkgo extract water to produce a mixed extract water, wherein the mixed extract water comprises 100 parts by weight of the rice husk extract and 1 to 100 parts by weight of the ginseng extract Mixed solution.

The amount of the extracted rice hull extract may be 1 to 50 parts by weight based on 100 parts by weight of the coffee bean.

The processing method may be carried out by repeating the step of spraying the rice husk extract water to the step of drying to have the second moisture content by repeating 2 to 10 times.

Drying the coffee bean that has undergone the step of drying to have the second moisture content.

According to the present invention, it is possible to provide a coffee bean processing system and method capable of effectively removing a silver skin of a coffee bean sprout by spraying the coffee bean sprouts with the rice hull extract water and stirring the same.

Further, it is possible to provide a coffee bean processing system and method capable of providing a coffee beverage in which a rice husk extract is adsorbed on coffee beans and flavor is increased.

In addition, unnecessary smoke and byproducts can be reduced during the roasting process of green beans, thereby shortening the roasting time and providing a system and method for processing coffee beans having a consistent taste and aroma of coffee produced as a result of roasting.

1 is a block diagram showing a basic configuration of a coffee bean grind processing system according to an embodiment of the present invention.
2 is a block diagram illustrating the specific components of the system of FIG.
FIGS. 3 to 4 are views for explaining an example of a silver skin removal process in the system of FIG. 1. FIG.
Fig. 5 is a view sequentially showing the machining method of the green bean in the system of Fig. 1. Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Unless defined otherwise, all terms (including technical and scientific terms) used herein may be used in a sense commonly understood by one of ordinary skill in the art to which this invention belongs. Also, commonly used predefined terms are not ideally or excessively interpreted unless explicitly defined otherwise.

The terminology used herein is for the purpose of illustrating embodiments and is not intended to be limiting of the present invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. As used in the specification, "comprises" and / or "comprising" do not exclude the presence or addition of one or more other elements in addition to the stated element.

Hereinafter, a coffee bean processing system and method according to an embodiment of the present invention will be described with reference to the drawings.

Referring to Figs. 1 and 2, a block diagram illustrating a configuration of a coffee bean processing system according to an embodiment of the present invention is shown. The coffee bean processing system according to the present embodiment may include a first drying unit 100, a jetting unit 200, and a stirring unit 300.

Specifically, the present coffee bean processing system includes a first drying unit 100 for controlling the first moisture content of the coffee beans, a spraying unit 200 for spraying the extracted rice hake water onto the coffee beans fed from the first drying unit 100, And an agitator 300 for agitating the coffee beans containing the injected rice husk extract water.

The first drying unit 100 can dry the moisture contained in the coffee beans to a predetermined moisture content or less. Generally, the water content of the coffee beans distributed can be a value between 10 and 15% by weight. When the water content is higher than the range, there may be a risk that the green beans may be damaged by fungi during the distribution or storage of coffee bean seeds. If the water content is lower than the range, there is a fear that the coffee flavor may be decreased due to a low moisture content.

On the other hand, in the present embodiment, the first drying unit 100 can lower the moisture content of the coffee beans to more than 0 wt% and less than 10 wt%, thereby effectively absorbing the rice hull extraction water to be described later. The first drying unit 100 may dry the first moisture content, that is, the moisture content of more than 0% by weight and less than 10% by weight, but it is not limited thereto and may be varied depending on the kind of coffee bean, It can be dried. For example, it is possible to dry the first moisture content to 8% or less, thereby generating a gap between the green bean main body and the silver skin so that the silver skin can be easily peeled off. In the state of low moisture content, It is possible to induce the rice husk extract to be more easily absorbed into the main body of the coffee bean.

Meanwhile, the first drying unit 100 may include a vibration transfer unit 110 for transferring the coffee beans to the stirring unit 300, which will be described later. That is, the vibrating feeder 110 may be in the form of a vibrator for uniformly supplying a predetermined amount of the dried coffee beans to the agitator 300 so as to have a first moisture content, but is not limited thereto.

The jetting unit 200 can jet the rice husk extract water to the dried coffee beans so as to have the first moisture content in the first drying unit 100. To this end, the jetting unit 200 may include an extraction number generating unit 210 in this embodiment.

The extraction water generating unit 210 can generate the rice hull extraction water, and the rice hull extraction water can be generated by pouring water of 10 to 100 times the rice hull weight of the rice. Since the rice husks are very bulky, it is difficult to extract the useful components contained in the rice husk by using less than 10 times the weight of water. If the water is used more than 100 times, the components of the rice husk contained in the extracted water may be excessively diluted have.

The silver skin, which surrounds the surface of coffee bean, is the main cause of halving the taste and aroma of coffee. In the conventional method, the silver skin is removed by heat in the roasting process, whereas in the present embodiment, the rice husk extracted water generated in the extraction water generating unit 210 is sprayed to the coffee bean in the sprayer 200, To reduce smoke and byproducts in the roasting process and improve the taste and flavor of the coffee. At this time, the amount of the extracted rice husk extract may be 1 to 50 parts by weight based on 100 parts by weight of the coffee bean. For example, when the rice hull extract water is sprayed at less than 1 part by weight with respect to 100 parts by weight of the coffee green beans, if the rice hull extract water is not sufficiently stirred or absorbed into the coffee beans and the rice hull extract water is sprayed with 50 parts by weight or more, The flavor of coffee can be reduced because it escapes from green bean.

Rice bark is rich in dietary fiber such as active vitamin B group and fiber and contains various minerals such as Na, Mg, Ca, Mn, K, Zn, Fe, Al and Si and polyphenol which is an antioxidant. Therefore, the process of removing the silver skin of the coffee beans by using the rice husk extract can absorb the rice husk extract water to the coffee beans to produce the coffee beans containing the rice husk extract, and the rice husk extract is absorbed by the coffee beans, The overall sour taste of coffee can be increased by reducing the fine sourness and sour taste of coffee.

In some other embodiments, the extraction water generating unit 210 may provide a spraying unit 200 with a solution obtained by mixing rice hull extraction water and ginseng extract water. In the present embodiment, the mixing ratio of the rice hull extraction water and the ginseng extraction water is 1 to 100 parts by weight of the ginseng extraction water to 100 parts by weight of the rice hull extraction water, but the present invention is not limited thereto and various ratios ≪ / RTI > However, when the amount of ginseng extract is less than 1 part by weight with respect to 100 parts by weight of the extracted rice hull extract, components contained in the ginseng extract water are not sufficiently transferred to the rice hull extract water. If the extracting water of ginseng is 100 parts by weight or more, And the fragrance can be over emphasized compared to the number of extracted rice hulls.

The agitating unit 300 may stir the coffee bean which has been sprayed with the rice husk extract water to remove the silver skin. The agitator 300, which rotates the coffee bean sprouted with the extract and peels off a certain portion of the surface of the coffee bean sprouts by the frictional force, may be in the form of a container rotating in a certain direction, but the present invention is not limited thereto. Various devices can be used.

In some other embodiments, the agitator 300 may include a fermenter 500 with a built-in heat generator to facilitate the absorption of the rice husk extract into the inner surface of the coffee beans and ferment the beans. The fermentation unit 500 may be disposed at various positions or integrated in one form according to the method of processing, which is included in one side of the stirring unit or physically spaced apart and disposed after the dry cleaning unit 600 described later.

The water content of the coffee beans may be higher than necessary by stirring or adsorbing the coffee bean and rice hull extract water having the first moisture content in the stirring part 300. Thus, the second drying unit 400 can re-dry the stirred coffee beans to have a second moisture content. In this embodiment, the second water content may be 8 to 15% by weight. When the second moisture content is less than 8% by weight, the flavor of the coffee is reduced. When the second moisture content is more than 15% by weight, the coffee bean can be easily deteriorated or damaged by fungi during distribution and storage. In this embodiment, the second drying unit is physically spaced apart from the first drying unit, but is not so limited, and in some other embodiments, the first and second drying units may be one integrated drying unit.

In some other embodiments, referring to FIG. 2, the second drying unit 400 may include the dry cleaning unit 600 or the dry cleaning unit 600 may be independently provided. The dry washing unit 600 can dry the silver skin and the various by-products generated during the stirring process. As described above, the coffee beans need to maintain a constant water content. For this, the dry cleaning unit 600 may perform a cleaning process using a brush and high-pressure air.

Referring to Figs. 3 to 4, a diagram for explaining an example of a process of removing silver skins of coffee beans in the system of Fig. 1 is shown.

As shown in FIG. 3, the coffee beans having the first moisture content may be supplied to the agitating part 300 through the vibration transfer part 110 by a certain amount. In response to this, the rice husk extracted water generated in the extraction water generator is sprayed onto the coffee beans fed to the agitator 300 through the sprayer 200. As the rice husk extracts are injected at a predetermined pressure, the silver skins present in the coffee beans can be primarily removed or the binding force can be weakened. In addition, the rice husk extract can be adsorbed to the rice husk in the above process. In this embodiment, the rice husk extracting water is sprayed directly onto the coffee beans falling into the stirring part 300, but the present invention is not limited thereto. The vibration conveying part 110 may be connected to the lower end of the stirring part 300, Or may be formed in various ways such as spraying before the green bean is supplied.

As shown in FIG. 4, the coffee beans transferred to the agitator 300 may be stacked on the lower portion of the coffee beans and their surfaces may be adjacent to each other, and 1 to 50 parts by weight of the extracted rice hulls may be filled in 100 parts by weight of the coffee beans . At this time, if the agitator 300 is rotated or moved in a predetermined direction or a plurality of directions, the silver skin can be removed due to the frictional force between the coffee beans. To this end, the agitation unit 300 may include a stirring unit. For example, a stirring unit rotating in the direction opposite to the rotating direction of the stirring unit 300 may be disposed, or the stirring unit 300 may be fixed, and the stirring unit may rotate in a plurality of directions to stir the coffee bean.

In some other embodiments, the stirring unit is disposed inside the stirring portion 300, and the stirring unit forms a spiral protrusion to increase the frictional force between the coffee beans by the force advancing upward or downward in the rotating direction, So that the skin removal process can be performed more effectively.

When the coffee bean and silver skin are separated, the dry cleaner can remove the silver skin. As described above, since silver skin is in the form of a thin film, it is lighter and less dense than coffee beans. Therefore, the silver skin can be effectively removed by the dry cleaning method using the brush and the air pressure.

Referring to Fig. 5, the processing method of green beans in the system of Fig. 1 is shown sequentially.

First, a general coffee bean with silver skins may be dried to have a first moisture content (S10). The first moisture content of the present embodiment is greater than 0 wt% and less than 10 wt%, and the coffee bean having the first moisture content can improve the water absorption rate of the rice hull extract water and weaken the binding force between the coffee bean and the silver skin layer.

Next, step S20 of spraying the rice husk extract water to the dried coffee beans can be performed. To this end, it may comprise generating a rice husk extraction number. In some other embodiments, extraction water mixed with ginseng extract water may be generated in the rice husk extract water and sprayed onto the coffee beans. The silver skin of the coffee bean may be partially peeled off or the binding force may be weakened due to the jetting pressure of the rice husk extracting water in the step S20.

(S30) of separating the coffee bean and the silver skin from each other through the agitation process in the agitation part where the rice husk extract water and the coffee bean are loaded. In the stirring step (S30), the silver skin can be separated from the green bean due to the frictional force between the coffee bean sprouts and the injection, mixing and blooming of the rice hull extract water. In the present embodiment, the stirring process may promote the friction action of the coffee bean sprouts by rotating or moving the container containing the coffee bean and rice hull extraction water in a predetermined direction, but the present invention is not limited thereto. Various stirring techniques such as the provision of a mixer in the container It is possible to separate coffee bean and silver skin by using. In addition, in step S30 where the coffee beans and rice husk extract water are stirred, a useful ingredient such as minerals contained in rice hulls is adsorbed on the coffee beans as described above, and the flavor can be increased in the production of coffee beverages.

(S50) of re-drying the separated coffee bean having the silver skin so as to have the second moisture content. In the present embodiment, the second moisture content may be 8 to 15% by weight, but the water content can be variously set according to the distribution, storage stability, and flavor of the coffee bean.

(S60) of removing the silver skin and the foreign substance from the coffee bean can be performed by dry washing. Dry cleaning is a method for removing silver skin without changing the moisture content of coffee beans. It is possible to remove silver skin with brush or air pressure by using lightweight and low density characteristics of silver skin compared to coffee green beans.

In some other embodiments, the coffee bean processing method may further include repeating steps S 20 to S 60 two to ten times (S 70). Through the repeating step S70, the silver skin of the coffee bean can be more effectively removed, and the rice husk extract can be well absorbed into the coffee bean.

In some other embodiments, the remaining amount of the silver skin may be determined through the repeating step S70. For example, it is possible to reduce the remaining amount of the silver skin every time the steps S20 to S60 are repeated, or to adjust the amount of the silver skin to be removed in the dry cleaning step (S60). As described above, if the silver skin can not be sufficiently removed during the processing of coffee, the taste and sour taste may be excessively emphasized during the production of the coffee, which may cause a decrease in flavor.

On the other hand, when the silver skin is completely removed, it may cause damage or deterioration of the coffee beans due to the heat depending on the roasting process or the skill of the roasting worker. In other words, the silver skin protects against the direct heat applied to the coffee beans, so that a smooth roasting process can be performed. Therefore, the remaining amount of the silver skin can be appropriately adjusted according to the taste of the user or the degree of roasting, so that it can be mixed with the coffee beans.

In some other embodiments, after step S70 is performed, the coffee beans may be treated at high pressure and / or high temperature to perform a step (S80) of puffing coffee beans.

Conventional roasting methods generally use high temperature heat or hot air using it. That is, the heat supplied by conduction, convection, radiation, etc., heats the coffee beans, thereby causing the physical and chemical changes of the coffee beans, resulting in the incense and flavor peculiar to the coffee. In addition to this heat treatment technique utilized in the roasting process, in some other embodiments, coffee beans may be subjected to the same or similar effect as the roasting process by applying a certain amount of heat to the high pressure treatment process.

As described above, by removing only a portion of the silver skin, the silver skin protects the coffee beans at the time of roasting the coffee beans having a part of the silver skin, so that the smooth roasting process can proceed, and a part of the silver skin is removed in advance, The silver skin can be easily peeled off during the roasting process.

On the other hand, coffee beans, which have completely removed silver skins, can reduce the time that silver skins have on the fresh bean surface and remove the sourness and flavor of the final product, coffee.

Accordingly, in a high-pressure puffing step S80 (step S80) in which a portion of the silver skin produced through steps S10 to S70 according to the user's selection is processed at high pressure and / or high temperature according to selection, ) Can be substituted for the general roasting process, and the same or similar effect as the roasting process of coffee bean can be obtained. In addition, in some other embodiments, a general roasting process may be performed on coffee beans in which the silver skin has been completely removed.
That is, puffing may mean a processing action that changes the physical properties of coffee beans by treating them with high temperature and high pressure.

In addition, the coffee bean sprouts having been subjected to the steps S10 to S80 may be wrapped in an aluminum bag or the like to prevent rancidity and moisture evaporation of the coffee beans.

In some other embodiments, the coffee bean processing method may include fermenting the stirred coffee beans between step (S30) of stirring and step (S50) of drying to have the second moisture content (S40).

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: first drying section
110:
200:
210:
300: stirring part
400: second drying section
500: fermentation part
600: Dry cleaning unit

Claims (10)

A first drying unit for adjusting a first moisture content of the coffee bean;
A spraying unit for spraying the rice husk extract water to the coffee beans delivered from the first drying unit; And
And a stirrer for stirring the coffee beans containing the extracted rice husk extract water. The method according to claim 1,
Wherein the first moisture content is greater than 0 wt% and less than or equal to 10 wt%. The method according to claim 1,
Wherein the jetting unit includes an extraction water generating unit for producing the rice hull extraction water, wherein the extraction water generating unit generates mixed extraction water by mixing the ginseng extraction water with the rice hull extraction water,
Wherein the mixed extraction water is a solution obtained by mixing 100 parts by weight of the extracted rice hull extract and 1 to 100 parts by weight of the extracted ginseng extract. The method according to claim 1,
Wherein the water extracted from the jetting section is 1 to 50 parts by weight per 100 parts by weight of the coffee bean. The method according to claim 1,
The system further includes a second drying unit and a dry cleaning unit, wherein the second drying unit adjusts a second moisture content of the agitated coffee beans, and the dry cleaning unit includes a A coffee bean processing system that cleans byproducts dry. Drying the coffee beans to have a first moisture content;
Spraying rice husk extract water onto the dried coffee beans;
Stirring the chopped rice bran extracts and the coffee beans; And
And drying the stirred coffee beans to have a second moisture content. The method according to claim 6,
Wherein the first moisture content is greater than 0 wt% and less than 10 wt%, and the second moisture content is 8 wt% to 15 wt%. The method according to claim 6,
Wherein said injecting comprises generating said rice husk extracts,
Wherein the generating step further comprises mixing ginseng extract water with the rice hull extraction water to produce mixed extraction water,
Wherein the mixed extraction water is a solution obtained by mixing 100 parts by weight of the rice hull extraction water and 1 to 100 parts by weight of the ginseng extraction water. The method according to claim 6,
The amount of the extracted rice hull extract is 1 to 50 parts by weight based on 100 parts by weight of the coffee bean,
Wherein the step of spraying the rice husk extract water and the step of drying the rice husk having the second moisture content are repeated 2 to 10 times. The method according to claim 6,
Further comprising the step of puffing the coffee bean to change its physical properties under high pressure.

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