JP2002293780A - Kiwi catechin and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that can effectively utilize the fruit flesh thin layer remaining on the back surface of the fruit skin after the fruit skins are mechanically peeled off from the fruit and simultaneously can utilize kiwi catechin included in the kiwi fruit. SOLUTION: The objective kiwi catechin is the polyphenols included in the fruit flesh of kiwi. The kiwi catechin is characteristically obtained by crushing the skins containing thin fruit flesh layer on the back surface of the skin remaining after the skin is peeled off from the original fruits, squeezing the crushed peels, removing the solid components from the suspended fruit juice and collecting the objective kiwi catechin by extracting the aqueous solution including kiwi catechin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to kiwi catechin and a method for producing kiwi catechin.

[0002]

2. Description of the Related Art As is well known, kiwifruits are provided to consumers as fresh fruits, and demand for processed products increases with the increase in consumption of fresh fruits. Processed products such as fruit juice, canned food, and cut fruit are widely provided to consumers.

[0003] When producing kiwifruit processed fruit, canned food, cut fruit and the like, it is necessary to peel the flesh of the kiwifruit from the flesh, and the peeling is performed using a peeling means such as a peeler. In general, the peeling of the peeled skin is partially used as feed, but most of the other skin is directly discarded.

[0004] Furthermore, kiwifruit is covered with hair called mushrooms, and in order to surely remove the mushrooms,
When peeling, not only the epidermis but also the flesh located under the epidermis must be peeled off, and as a result, the yield of flesh in the peeled kiwi fruit is
If the value before peeling is 100, the value after peeling will be around 80, and a considerable amount of pulp will be peeled off together with the epidermis.

[0005] In addition, recent studies have found that kiwifruits have strong antioxidant activity and immune cell activating activity. These effects are due to the effects of kiwicatechin, which is composed of polyphenols contained in kiwifruit. It is considered to be due to vitamin C, and the antioxidant effect of the kiwifruit is comparable to that of epicatechin, which is a polyphenol of green tea, and the usefulness of the kiwicatechin has attracted attention.

[0006]

According to the above-mentioned prior art, a considerable amount of pulp together with the epidermis is discarded together with the epidermis due to the peeling that occurs when kiwifruit is processed into fruit juice, canned food, cut fruit and the like. As the demand for processed kiwifruit products increases,
The amount of pulp that is discarded with the epidermis is also increasing, and there is an increasing demand for effective use of the pulp that is peeled off with the epidermis during peeling.

Further, by eating kiwi fruit,
It has strong antioxidant activity and immune cell activity, but it is a useful component contained in kiwifruit in order to more efficiently obtain the strong antioxidant activity and immune cell activity of kiwifruit. There is a demand for effective use of kiwi catechin.

Therefore, the present invention solves the above-mentioned problems, and effectively utilizes the flesh portion located under the epidermis contained in the skin peeled from the raw fruit when processing kiwifruit. It is an object of the present invention to provide a technology that can utilize the kiwi catechin, which is a useful component contained in kiwi fruit, more effectively.

[0009]

In order to achieve the above object, the present invention has the following technical means. That is, a kiwi catechin comprising polyphenols contained in the flesh of the kiwi fruit, wherein the kiwi catechin is located under the epidermis peeled off together with the epidermis and epidermis peeled from the raw fruit when processing the kiwi fruit. The solid content is removed from the cloudy juice obtained by crushing and squeezing the skin containing the pulp portion to obtain an aqueous solution containing kiwi catechin, and further, extracting kiwi catechin from the aqueous solution containing the kiwi catechin. A kiwi catechin characterized by being formed by the above method.

Further, when processing kiwifruit, the skin 11 including the epidermis peeled from the raw material fruit 1 and the pulp portion located under the epidermis peeled off together with the epidermis is crushed Sk2.
And the crushed Sk2 peel 11 is squeezed Sk3
Pulp of kiwi fruit, comprising: removing solids from the squeezed juice that has been squeezed Sk3 to obtain an aqueous solution containing kiwi catechin; and extracting kiwi catechin from the aqueous solution containing kiwi catechin. A method for producing kiwi catechin comprising polyphenols contained in the above, wherein the step of extracting kiwi catechin from the aqueous solution containing kiwi catechin comprises adsorbing kiwi catechin from the aqueous solution containing kiwi catechin to adsorb a synthetic resin column. The step of performing Sk7, the step of performing Sk8 elution with water-containing ethanol to elute the kiwi catechin adsorbed on the synthetic resin column, and the step of performing the concentration under reduced pressure Sk9 to remove ethanol from the water-containing ethanol from which kiwicatechin eluted are performed. Consists of producing a catechin solution, and The serial Kiwi catechin solution, by adjusting Sk10 to a predetermined concentration, the aqueous liquid product 1
No. 2 is a method for producing kiwi catechin, wherein kiwi catechin K is formed.

In addition, when processing kiwifruit, the skin 11 including the epidermis peeled off from the raw material fruit 1 and the pulp portion located under the epidermis and peeled off together with the epidermis is crushed Sk2.
And the crushed Sk2 peel 11 is squeezed Sk3
Pulp of kiwi fruit, comprising: removing solids from the squeezed juice that has been squeezed Sk3 to obtain an aqueous solution containing kiwi catechin; and extracting kiwi catechin from the aqueous solution containing kiwi catechin. A method for producing kiwi catechin comprising polyphenols contained in the above, wherein the step of extracting kiwi catechin from the aqueous solution containing kiwi catechin comprises adsorbing kiwi catechin from the aqueous solution containing kiwi catechin to adsorb a synthetic resin column. The step of performing Sk7, the step of performing Sk8 elution with water-containing ethanol to elute the kiwi catechin adsorbed on the synthetic resin column, and the step of performing the concentration under reduced pressure Sk9 to remove ethanol from the water-containing ethanol from which kiwicatechin eluted are performed. Consists of producing a catechin solution, and The serial Kiwi catechin solution, after microfiltration SK11, by spray drying SK12, a method for producing a kiwi catechins, characterized by Kiwi catechin K as a powder product 13 is formed.

[0012] The present invention comprises the above technical means, and is used for processing kiwifruit to produce fruit juice, canned food, cut fruit, etc., and peeled off the skin constituting the skin peeled from the raw material fruit. It is made by extracting the kiwi catechin composed of polyphenols contained in the pulp from the pulp portion located under the epidermis, and is peeled off together with the epidermis contained in the skin generated when processing the kiwi fruit. By obtaining the kiwi catechin from the flesh under the epidermis, it is possible to effectively use the flesh under the epidermis stripped off together with the epidermis contained in the skin of the kiwi fruit that has been conventionally discarded, and Kiwi catechin, a useful ingredient contained in kiwi fruit, is extracted from the flesh of kiwi fruit to make kiwi catechin more effective. It can be used to.

Further, according to the above-mentioned method for producing kiwi catechin, kiwi catechin K is provided as aqueous liquid product 12 or powdered product 13, and can be selectively used depending on the application. The action and the activation action of immune cells can be obtained more effectively.

[0014]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. The kiwi catechin of the present invention is located under the epidermis peeled together with the epidermis and the epidermis peeled off from the raw fruit when processing kiwifruits to produce fruit juices, canned foods, cut fruits, etc. Using the pulp portion as a raw material, it is obtained by extracting kiwi catechin consisting of polyphenols contained in the pulp from the pulp portion located under the epidermis, and the skin generated when processing kiwi fruit It is possible to effectively use the flesh portion under the epidermis peeled off together with the contained epidermis, and to more effectively use kiwi catechin, which is a useful component contained in kiwifruit.

FIG. 1 shows a flow chart of the process of extracting and producing kiwi catechin, which is described in detail below. still,
FIG. 1 shows both the kiwifruit processing step and the kiwicatechin extraction and production step. First, the kiwifruit processing step will be described.

First, the kiwi fruit as the raw material fruit 1 is washed S1 and air-dried, and then peeled S2 using a peeling means such as a peeler, so that the flesh 2 and the peel 11 (located under the epidermis and under the epidermis). (Pulp portion).

The kiwifruit is processed by milling the peeled pulp 3 after milling S3, centrifuging S4 to remove solids such as seeds from the juice, and subjecting the juice to a heat treatment S5. To the stationary tank S6. The fruit juice obtained at this time is used as jam or the like as essence 7 or concentrated essence 8.

The fruit juice sent to the stationary tank S6 is decanted S7, centrifuged S8, diatomaceous earth filter S
9, clear juice 5 and after sterilization S10, hot filling S
11 and provided as kiwi juice 6.

The kiwi juice 6 can also be produced by concentrating the clear juice 5 to form a concentrate 9 and using the concentrate 9 and the reduced concentrated essence 8 as a raw material.

Further, in addition to the pulp 2 being provided as kiwi juice 6, the pulp 2 which has been peeled S2 is sliced S13 and then packed in cans, and the pulp 2 is provided as a sliced can 3 or the pulp 2 which has been peeled S2. Is frozen S14 as it is or cut to a predetermined size,
It is provided as frozen frozen pulp 4 or cut fruit.

Next, the process of extracting and producing kiwi catechin will be described. In the kiwi catechin extraction and manufacturing process, the crushed Sk
2 to form a paste, and the crushed Sk2 is used to squeeze the skin 11 formed into a paste. At this time, crushing Sk2 and squeezed Sk3 can be performed smoothly by adding water (2 to 3 times the raw material) to the skin 11 serving as a raw material.

Next, the turbid juice obtained by shredding the skin 11 by crushing Sk2 and squeezing Sk3 is subjected to enzyme treatment Sk4 to decompose and remove pulp contained in the turbid juice, and then centrifuged.
Perform k5 and filtration Sk6 (preferably filtration with diatomaceous earth) to remove solids such as epidermis and hair called mushrooms,
An aqueous solution containing kiwi catechin (polyphenols contained in kiwi fruit) is obtained.

Next, the aqueous solution containing the above kiwi catechin is adsorbed on a synthetic resin column using ion exchange.
After performing k7, the kiwi catechin in the aqueous solution containing kiwi catechin is adsorbed on the synthetic resin column, and then the kiwi catechin adsorbed on the synthetic resin column is eluted with aqueous ethanol Sk8. On the other hand, by performing vacuum concentration Sk9,
A kiwi catechin solution from which ethanol has been removed is obtained. Kiwi catechin is extracted by the synthetic resin column adsorption Sk7, aqueous ethanol elution Sk8, and concentrated under reduced pressure Sk9.

The concentration of the kiwi catechin solution is adjusted by, for example, adding water to the kiwi catechin solution.
0, kiwi catechin K is formed as the aqueous liquid product 12, and the kiwi catechin solution is subjected to microfiltration Sk11, followed by spray drying Sk1.
By performing Step 2, kiwi catechin K is formed as powder product 13.

Since the kiwi catechin K is formed and provided as the aqueous liquid product 12 or the powder product 13 as described above, the kiwi catechin K can be properly used according to the intended use. The action and the activation action of immune cells can be obtained more effectively.

Further, as shown in FIG. 2, when performing the above-mentioned process of extracting and producing kiwi catechin K, after the skin 11 serving as a raw material is stored Sk1, it is frozen Sc1 and stored S1.
c2 can also be frozen and stored as Sc1
The kiwi catechin K can be extracted in the same manner as described above by using the peeled skin 11 that has been thawed Sc3 as necessary.

Moreover, in this case, kiwi catechin K
The optimal amount of the skin 11 can be supplied to the device for extracting the kiwi catechin K, so that the kiwi catechin K can be more efficiently extracted.

[0028]

As described in detail above, the present invention has the following effects. That is, the flesh portion under the epidermis peeled off together with the epidermis contained in the skin generated when processing the kiwifruit can be effectively used, and the kiwicatechin, a useful component contained in the kiwifruit, is more effectively used. The technology that can be used can be provided.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a process of extracting and producing kiwi catechin.

FIG. 2 is a flowchart showing another example of the kiwi catechin extraction production process.

[Explanation of symbols]

 Reference Signs List 1 raw material fruit 2 pulp 3 canned slice 4 frozen pulp 5 clarified juice 6 kiwi juice 7 essence 8 concentrated essence 9 clarified juice concentrate 11 rind 12 aqueous liquid product 13 powder product K kiwi catechin

Continued on the front page F term (reference) 4B018 MD60 ME06 ME14 MF01 4C062 FF56 4C086 AA04 BA08 MA01 MA04 NA14 ZB07

Claims (3)

[Claims] 1. A kiwi catechin comprising polyphenols contained in the flesh of a kiwi fruit, wherein the kiwi catechin is a subcutaneous epidermis peeled off together with an epidermis peeled off from a raw fruit when the kiwi fruit is processed. The aqueous solution containing kiwi catechin is obtained by removing solids from the cloudy juice obtained by crushing and squeezing the skin containing the pulp portion located in the above, and further, from the aqueous solution containing the kiwi catechin, kiwi catechin Kiwi catechin, characterized in that the kiwi catechin is formed by extracting citrus. 2. A step of crushing the skin 11 including the epidermis peeled from the raw material fruit 1 and the pulp portion located under the epidermis peeled off together with the epidermis when processing the kiwi fruit, and the crushing Sk2 is performed. A step of squeezing the skin 11 from the juice, a step of removing solids from the turbid juice obtained by the squeezing Sk3 to obtain an aqueous solution containing kiwi catechin, and a step of extracting kiwi catechin from the aqueous solution containing kiwi catechin A method of producing kiwi catechin comprising polyphenols contained in the flesh of kiwi fruit comprising the step of extracting kiwi catechin from the aqueous solution containing kiwi catechin, wherein the kiwi catechin is adsorbed from the aqueous solution containing kiwi catechin For the adsorption of synthetic resin column S
k7, and elution of aqueous ethanol elution Sk8 to elute the kiwi catechin adsorbed on the synthetic resin column.
And a step of performing a vacuum concentration Sk9 to remove the ethanol from the hydrous ethanol from which the kiwicatechin has eluted, thereby producing a kiwicatechin solution, and adjusting the kiwicatechin solution to a predetermined concentration.
(10) A method for producing kiwicatechin, wherein kiwicatechin (K) is formed as the aqueous liquid product (12). 3. A step of crushing Sk2 the skin 11 including the epidermis peeled off from the raw fruit 1 and the flesh portion located under the epidermis peeled off together with the epidermis when processing the kiwi fruit, and the crushing Sk2 is performed. A step of squeezing the skin 11 from the juice, a step of removing solids from the turbid juice obtained by the squeezing Sk3 to obtain an aqueous solution containing kiwi catechin, and a step of extracting kiwi catechin from the aqueous solution containing kiwi catechin A method of producing kiwi catechin comprising polyphenols contained in the flesh of kiwi fruit comprising the step of extracting kiwi catechin from the aqueous solution containing kiwi catechin, wherein the kiwi catechin is adsorbed from the aqueous solution containing kiwi catechin For the adsorption of synthetic resin column S
k7 and elution of aqueous ethanol to elute kiwi catechin adsorbed on the synthetic resin column.
And a step of performing a vacuum concentration Sk9 to remove the ethanol from the hydrous ethanol from which the kiwicatechin has eluted, thereby producing a kiwicatechin solution. In addition, the kiwicatechin solution is sprayed after microfiltration Sk11. By drying Sk12, powder product 1
3. A method for producing kiwi catechin, wherein kiwi catechin K is formed.