JP2019205404A - Freshness retaining method of greengrocery and freshness retainer - Google Patents

Abstract

To provide a freshness retaining method by which can suppress moisture loss of greengrocery and retain freshness of greengrocery for an extended period, and to provide a freshness retainer.SOLUTION: The freshness retaining method of greengrocery is a method for storing, in pseudo-microgravity, parts for having vessels of greengrocery. By storing the parts for having vessels of greengrocery in pseudo-microgravity, moisture loss of greengrocery is suppressed, with freshness of greengrocery retained for an extended period.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a freshness holding method and a freshness holding device for fruits and vegetables.

  The freshness of fruits and vegetables greatly affects sales prices, shipping adjustments, and taste. Therefore, maintaining the freshness of fruits and vegetables is important at every stage of production, distribution, retail, and consumption. After harvesting, the fruits and vegetables are reduced in freshness due to aging, aging and moisture transpiration with ethylene, which is produced as a metabolite of respiratory action.

  In order to prevent the freshness of fruits and vegetables after harvesting from decreasing, a method of storing while removing the diffused ethylene gas so far (for example, Patent Document 1), a method of storing by adjusting to low temperature and high humidity (for example, patents) Various methods have been proposed, such as a document 2), a method of storing by irradiating light of a specific wavelength (for example, Patent Document 3), and a method of storing in a freshness retaining bag (for example, Patent Document 4).

JP-A-1-269449 JP 2005-192448 A JP 2016-26484 A JP 2018-34878 A

  In fruits and vegetables, the water supply from the roots is cut off after harvesting, so that wilting due to water loss is prominently seen as a phenomenon of reduced freshness. However, there is no effective method for suppressing the water loss of the fruits and vegetables.

  This invention is made | formed in view of the said matter, The objective is suppressing the water | moisture content loss of fruits and vegetables, and providing the freshness maintenance method and freshness maintenance apparatus of the fruits and vegetables which can maintain the freshness of fruits and vegetables for a long period of time.

The method for maintaining freshness of fruits and vegetables according to the first aspect of the present invention,
Store the part with the fruit and vegetable canal in a quasi-microgravity environment.
It is characterized by that.

  Moreover, it is preferable that the pseudo microgravity environment is an environment that gives gravity of 0.1 G or less to an object on a time average.

  Moreover, it is preferable to store the fruits and vegetables while rotating them around two orthogonal axes.

  Moreover, it is preferable that the said fruits and vegetables are leaf vegetables, stem vegetables, or flower vegetables.

  Moreover, it is preferable that the fruits and vegetables are sprout.

The freshness maintaining apparatus for fruits and vegetables according to the second aspect of the present invention,
A first rotating body that rotates around a first axis by driving of the first driving device;
A fruit and vegetables arrangement section in which fruits and vegetables are arranged by rotating around a second axis orthogonal to the first axis in the inner area of the rotation area of the first rotating body by driving the second driving device;
An acceleration detecting device installed at an arbitrary position of the fruit and vegetables arrangement unit to detect acceleration;
A control device for controlling the driving of the first driving device and the second driving device,
The fruit and vegetables arrangement part has a buffer material that suppresses damage to the fruit and vegetables due to rotation,
The control device calculates an acceleration vector from the following equation 1 based on the acceleration data detected by the acceleration detection device, and the first drive so that the integral of the acceleration vector per predetermined time becomes a predetermined value. Controlling the drive of the device and the second drive device;
A = g + rω ² (Formula 1)
(In Formula 1, A, g, r, and ω are the acceleration vector at an arbitrary point P of the fruit and vegetable arrangement part, the gravitational acceleration vector at the point P, and the intersection of the first axis and the second axis, respectively. The distance vector to the point P and the angular velocity vector at the point P are represented.)
It is characterized by that.

  In the method and apparatus for maintaining freshness of fruits and vegetables according to the present invention, moisture loss of fruits and vegetables can be suppressed, and the freshness of fruits and vegetables can be maintained for a long time.

It is sectional drawing which shows the structure of a freshness holding | maintenance apparatus. It is a perspective view which shows the operation state of a freshness holding | maintenance apparatus. It is a photograph which shows the condition of the storage experiment of the palm in an Example. It is a graph which shows the time-dependent change of the gravity of the X-axis direction of the freshness holding | maintenance apparatus in an Example, a Y-axis direction, and a Z-axis direction. 5 (A) to (C) are photographs of the palm of Comparative Example 1 on the first day of storage, the first day, and the second day, respectively, and FIGS. 5 (D) to (F) are the first day of storage and the first day, respectively. It is a photograph of the sprout of Example 1 of the 2nd day. 6 (A) to 6 (C) are photographs of the palm of Comparative Example 2 on the storage start date, the third day, and the sixth day, respectively, and FIGS. 6 (D) to (F) are the storage start date and the third day, respectively. It is a photograph of the sprout of Example 2 on the 6th day. It is a graph which shows the time-dependent change of the mass residual rate of the palm of Example 1 and Comparative Example 1. It is a graph which shows the time-dependent change of the mass residual rate of the palm of Example 2 and Comparative Example 2. 9 (A) to 9 (C) are photographs of silkworm radish of Comparative Example 3 on the storage start date, the third day, and the fifth day, respectively, and FIGS. 9 (D) to (F) are the storage start date and the third day, respectively. It is a photograph of the silkworm radish of Example 3 on the 5th day. It is a graph which shows the time-dependent change of the mass residual rate of the silkworm radish of Example 3 and Comparative Example 3. It is a graph which shows a time-dependent change of the mass residual rate of the green soybean of the comparative example 4 and the comparative example 5.

  The method for maintaining the freshness of a part provided with a fruit and vegetable canal according to the present embodiment is a method for storing fruit and vegetables in a pseudo microgravity environment. By storing the portion with the fruit and vegetable canal in a pseudo microgravity environment, the mass residual rate of the fruits and vegetables is maintained high. That is, moisture release from the fruits and vegetables is suppressed, and the freshness of the fruits and vegetables is maintained.

  Plants generally move water absorbed from the roots to the ends of leaves, etc., and release water from the pores in the leaves and stems (stomach transpiration), or release water from the cuticle layer (cuticle transpiration). . In the plant body, water is moved through the canal, but in a pseudo microgravity environment, the direction in which the water is moved cannot be sensed, making it difficult to perform active water regulation of the plant. it is conceivable that. As a result, it is considered that moisture release from the plant body is suppressed and the freshness is maintained.

  The fruits and vegetables here are agricultural products such as vegetables, fruits and wild plants, and as described above, the fruits and vegetables can be prevented from releasing moisture by not being able to sense the direction in which the fruits and vegetables move the water in the body. A site with a canal is used. Examples of the site having a fruit and vegetable canal include roots, stems, and leaves.

  As fruits and vegetables, for example, leafy vegetables such as cabbage, lettuce, spinach, Chinese cabbage, stem vegetables such as onion, asparagus, udo, flower vegetables such as myoga, cauliflower, broccoli, edible chrysanthemum, cereals, beans, vegetable seeds Sprout, which is a sprout that has been artificially germinated. The sprout includes a sprout system such as a sprout and a sprout system such as a spruce radish.

  The pseudo microgravity environment is an environment in which inertial forces such as universal gravitation and centrifugal force cancel each other, and their resultant force is smaller than 1 G and close to 0. Specifically, the pseudo microgravity environment is an environment in which gravity is less than 1 G on an object on an average over time, and is preferably an environment in which gravity is 0.1 G or less, more preferably 0.01 G or less. is there.

  Any method may be used as long as the above-mentioned pseudo microgravity environment can be generated. For example, there is a method in which the fruits and vegetables are rotated around two axes orthogonal to each other and the fruits and vegetables are placed in the pseudo microgravity environment. As an apparatus for generating a pseudo microgravity environment by rotating around such a biaxial rotation, there is a freshness maintaining apparatus 1 for fruits and vegetables as shown in FIGS. The freshness maintaining apparatus 1 can realize the above-described pseudo microgravity environment on the ground by canceling the gravity of the earth using the stress generated by the rotation.

  As shown in FIGS. 1 and 2, the freshness holding device 1 includes a first rotating body 10, first shafts 11 a and 11 b, a first driving device 12 housed in a first driving device housing portion 32, a fruit and vegetable arrangement portion 20, The second drive device 22 accommodated in the second shafts 21a and 21b, the second drive device housing portion 33, the support base 30, the support members 31a and 31b, the acceleration detection device 40, and the control device 50 are provided.

  Support members 31a and 31b are erected from the support base 30 so as to face each other. Between the support members 31a and 31b, the first rotating body 10, the fruit and vegetable arrangement unit 20 and the like are supported.

  The first rotating body 10 is pivotally supported by the first shafts 11a and 11b. The first shafts 11a and 11b are arranged on the same axis. One end of the first shaft 11 a is connected to the first rotating body 10, and the other end is connected to the output shaft 12 a of the first driving device 12. Even if the first shaft 11b is fixed to the support member 31b and the first rotary body 10 is slidable, the first shaft 11b is fixed to the first rotary body 10 and slidable with respect to the support member 31a. There may be. With this configuration, when the first driving device 12 is driven, the first shaft 11a connected to the output shaft 12a rotates, and the first rotating body 10 rotates around the first shafts 11a and 11b.

  The 1st rotary body 10 is a rectangular frame here, and has the space of the grade which the fruit and vegetables arrangement | positioning part 20 is arrange | positioned and can rotate in the area | region inside the rotation area | region of the 1st rotary body 10. FIG.

  Second shafts 21 a and 21 b are attached to the opposing frames of the first rotating body 10, respectively. The second shafts 21a and 21b are arranged on the same axis. The fruit and vegetables arrangement | positioning part 20 is attached to this 2nd axis | shaft 21a, 21b.

  One end of the second shaft 21 a is connected to the fruit and vegetable arrangement portion 20, and the other end is connected to the bevel gear 28. When the bevel gear 28 rotates, the fruit and vegetables arrangement unit 20 rotates in the inner region of the first rotating body 10. One end of the second shaft 21 b is connected to the fruit and vegetable arrangement unit 20, and the other end is slidably attached to the first rotating body 10.

  The fruit and vegetables arrangement | positioning part 20 is a location where fruit and vegetables are arrange | positioned. The fruit and vegetables arrangement | positioning part 20 is a box here. The fruit and vegetable arrangement part 20 has an open / close door (not shown) that allows insertion and removal of fruit and vegetables. Moreover, the fruit and vegetables arrangement | positioning part 20 is equipped with the shock absorbing material 20a which suppresses that an impact is added to fruit and vegetables by the fruit and vegetables arrangement | positioning part 20 rotating. Many fruits and vegetables are vulnerable to physical shocks and vibrations, but the buffer material 20a can prevent damage to the fruits and vegetables.

  The cushioning material 20a may be disposed on the inner wall surface of the box, and only needs to be able to protect the fruits and vegetables by filling the gap between the inserted fruit and vegetables. For example, various cushioning functions such as low-resilience urethane foam, air packing, and springs. A known material having the following can be used. In addition, the cushioning material 20a may have a form in which an amount that can fill a gap between the fruit and vegetable arrangement unit 20 and the fruit and vegetables is appropriately packed according to the capacity of the fruit and vegetables to be inserted.

  Moreover, the fruit and vegetables arrangement | positioning part 20 is not restricted to the box mentioned above, For example, various shapes, such as a plate-shaped body, a net-like body, and a cylindrical body, may be sufficient. And even if it is a form where fruits and vegetables are directly fixed to such a plate-like body with various fixing members such as a fixing string and a fixing rubber, the box housing the fruits and vegetables is fixed with the fixing members It may be.

  The second drive device 22 is installed on the support member 31b. An output shaft 22a of the second drive device 22 is installed in parallel with the first shafts 11a and 11b, and a gear 23 is installed on the output shaft 22a. The gear 23 is installed so as to mesh with a gear 24 slidably attached to the first shaft 11b.

  The gear 24 is formed integrally with a bevel gear 25 disposed inside the first rotating body 10. The first shaft 11b passes through the gear 24 and the bevel gear 25, and the gear 24 and the bevel gear 25 are configured to be slidable with respect to the first shaft 11b.

  Inside the first rotating body 10, rotational force transmitting members 26 and 27 for transmitting the driving force from the second driving device 22 to the second shaft 21a are arranged.

  The rotational force transmitting member 26 is configured by attaching bevel gears 26a and 26c to both ends of a shaft 26b. The shaft 26b is slidably installed on the first rotating body 10, and is installed perpendicular to the first shaft 11a (parallel to the second shafts 21a and 21b).

  On the other hand, the rotational force transmitting member 27 is configured by attaching bevel gears 27a and 27c to both ends of a shaft 27b. The shaft 27b is slidably disposed on the first rotating body 10, and is disposed in parallel to the first shaft 11a (perpendicular to the second shafts 21a and 21b).

  The bevel gear 26c of the rotational force transmitting member 26 is meshed with the bevel gear 25 attached to the first shaft 11b. Further, the bevel gear 26 a meshes with the bevel gear 27 a of the rotational force transmission member 27. Further, the bevel gear 27 c meshes with a bevel gear 28 attached to the second shaft 21 a connected to the fruit and vegetable arrangement unit 20.

  As the first driving device 12 and the second driving device 22, an electric driving device capable of supplying a rotational force to the first rotating body 10 and the fruit and vegetable arrangement unit 20 is used. For example, the rotation of the output shafts 12a and 22a is highly accurate. Servo motors and stepping motors that can be controlled are used.

  The acceleration detection device 40 is installed at an arbitrary position of the fruit and vegetable arrangement unit 20 and detects an acceleration at an arbitrary position of the fruit and vegetable arrangement unit 20. As the acceleration detection device 40, a three-axis acceleration sensor that can detect accelerations in three directions of the X axis, the Y axis, and the Z axis is used.

  The control device 50 controls the rotational speeds of the first driving device 12 and the second driving device 22 and controls the rotational speeds of the first rotating body 10 and the fruit and vegetable arrangement unit 20.

  The control device 50 controls the driving of the first driving device 12 and the second driving device 22 based on the acceleration data detected by the acceleration detection device 40.

  In addition, it is preferable that the acceleration detection apparatus 40 and the control apparatus 50 are a form which can communicate acceleration data wirelessly. In this case, the acceleration detection device 40 includes a wireless transmission unit, and the one control device 50 includes a wireless reception unit.

  Moreover, it is preferable that the acceleration detection device 40 includes a built-in storage battery and is capable of detecting acceleration and transmitting it to the control device 50 by receiving power transmission from the outside wirelessly. In this case, a device capable of transmitting power to the acceleration detection device 40 is provided at an arbitrary location such as the support base 30 and the support members 31a and 31. As a power transmission method, a known method such as a radio wave method, an electromagnetic induction method, or an electromagnetic resonance method may be used.

  Next, the rotation control of the first rotating body 10 and the fruit and vegetable arrangement unit 20 by the control device 50 will be described. While the 1st drive device 12 and the 2nd drive device 22 drive and the 1st rotary body 10 and the fruit and vegetables arrangement | positioning part 20 are each rotating, the acceleration detection apparatus 40 detects the acceleration of a triaxial direction continuously. .

The detected acceleration data is transmitted to the control device 50. The control device 50 calculates an acceleration vector using Equation 1 based on the transmitted acceleration data. When the point where the acceleration detection device 40 is installed is a point P, A, g, r and ω in Equation 1 are the acceleration vector at the point P, the gravitational acceleration vector at the point P, and the center of the fruit and vegetable arrangement part, respectively. A distance vector from the point P (intersection of the first axes 11a and 11b and the second axes 21a and 21b) to the point P and an angular velocity vector at the point P are shown.
A = g + rω ² (Formula 1)

  The acceleration detection device 40 obtains acceleration data in each of the three axial directions, and the control device 50 obtains angular velocity vectors (ω1) around the first axes 11a and 11b at the point P from the obtained acceleration data. The components of the angular velocity vector (ω2) around the second axes 21a and 21b and the gravitational acceleration vector (g) are analyzed. In addition, the angular velocity vector (ω) at the point P is analyzed from the angular velocity vector (ω1) around the first axes 11a and 11b and the angular velocity vector (ω2) around the second axes 21a and 21b. An acceleration vector is calculated. The above analysis can be performed by any method. In addition, the angular velocity vector (ω1) around the first axes 11a and 11b and the angular velocity vector (ω2) around the second axes 21a and 21b at any point may be based on detection by the rotational speed detection device. It may be calculated from the rotational speeds of the first driving device 12 and the second driving device 22.

  And while the 1st rotary body 10 and the fruit and vegetables arrangement | positioning part 20 are rotating, the acceleration vector of the point P is calculated continuously, and integration of the acceleration vector per predetermined time (for example, 10 minutes) is pseudo microgravity. The driving of the first driving device 12 and the second driving device 22 is controlled by feedback so that the state (approximately 1/10 G) is obtained. Thereby, a microgravity environment can be generated in a pseudo manner. For example, the ratio of the angular velocity of the first rotating body 10 and the angular velocity of the fruit and vegetable arrangement unit 20 is set as a specific ratio, and the first driving device 12 and the first driving unit 12 and the second rotation unit 10 and the fruit and vegetable arrangement unit 20 are rotated at equal angular speeds, respectively. The driving of the two-drive device 22 may be controlled.

  By disposing the fruits and vegetables in the fruit and vegetable arrangement unit 20 of the freshness holding device 1 and driving the freshness holding device 1, it is possible to suppress the moisture release of the fruits and vegetables and to store the freshness of the fruits and vegetables.

  In order to further suppress moisture release from the fruits and vegetables, it is more preferable to store the fruits and vegetables in a high humidity environment, for example, in a state where the relative humidity is maintained at 50% to 80%.

  We stored sprouts, silkworm radish, and green soybeans in a microgravity environment and verified the mass survival rate. In addition, about a sprout, it carried out twice, changing relative humidity.

(Example 1, comparative example 1: storage experiment of sprouts)
The used sprouts are as follows.
・ Mungo bean sprouts (trade name, manufactured by Salad Cosmo Utsunomiya Factory)
・ Production date: November 26, 2017 ・ Date of acquisition: November 28, 2017

  The sprout was placed in a polyethylene container (fixed box (trade name: manufactured by As One Co., Ltd.)) and sealed. In order to avoid fermentation, cuts were made in two places on the polyethylene container.

  Gravite (trade name, manufactured by Space Bio Laboratories Co., Ltd.) that generates a pseudo micro environment by rotating an object around two axes perpendicular to each other was used as a pseudo micro gravity generating apparatus. A polyethylene container containing sprout was placed in a pseudo microgravity generator.

  The pseudo microgravity generating device was placed in a storage maintained at 23 ° C. and RH 30%, and a storage experiment of palm was conducted. And the weight of the storage start date, the 1st day, and the 2nd day was measured, and mass residual ratio was calculated | required.

  In addition, as Comparative Example 1, sprouts were placed in a storage room in which a pseudo microgravity generator was placed, and the mass residual ratio was obtained in the same manner as described above.

(Example 2, comparative example 2: storage experiment of sprout)
The used sprouts are as follows.
・ Fujimino Hayashi (Brand name, Saiki Foods Co., Ltd.)
・ Production date: December 9, 2017 ・ Acquisition date: December 11, 2017

  In Example 2, sprouts were stored in the same manner as in Example 1 in an environment maintained at 25 ° C. and RH 66%. Then, the weight of the sprout on the first day of storage, the first day, the second day, the third day, the fourth day, the fifth day, and the sixth day was measured to determine the mass residual rate.

  Moreover, as Comparative Example 2, in the same manner as described above, sprouts were placed in a storage room in which a pseudo microgravity generator was placed, and a mass residual ratio was obtained.

  The state of the storage experiment of Examples 1 and 2 and Comparative Examples 1 and 2 is shown in FIG. Moreover, the time-dependent change of gravity by the pseudo microgravity generator is shown in FIG.

  A photograph of the sprout of Example 1 and Comparative Example 1 is shown in FIG. 5, and a photograph of the sprout of Example 2 and Comparative Example 2 is shown in FIG. Moreover, the result of the mass residual rate of the palm of Example 1 and Comparative Example 1 is shown in FIG. 7, and the result of the mass residual rate of the palm of Example 2 and Comparative Example 2 is shown in FIG.

  When the appearance of the palms of Example 1 and Example 2 stored in a pseudo microgravity environment is seen, it can be seen that the thickness is maintained as compared with Comparative Example 1 and Comparative Example 2, respectively. And it turns out that the mass of the palm of Example 1 and Example 2 stored in the pseudo microgravity environment is also significantly maintained compared with Comparative Example 1 and Comparative Example 2, respectively. Moreover, it turns out that the mass of a palm is hold | maintained for a long period in Example 2 performed on the conditions where relative humidity is high compared with Example 1. FIG.

(Example 3, comparative example 3: storage experiment of silkworm radish)
The silkworm radish was stored in the same manner as in Example 1 except that it was performed in an environment of 25 ° C. and RH 66%. The used golden radish is as follows.
・ Kaiware (trade name, Sanwa Agriculture and Forestry Co., Ltd. (Saitama Prefecture))
・ Manufacturing date: Unknown ・ Date of acquisition: January 15, 2018

  And the weight of the silkworm radish on the first day of storage, the first day, the second day, the third day, the fourth day, and the fifth day was measured, and the mass residual ratio was determined.

  In addition, as Comparative Example 3, similarly to the above, a silkworm radish was placed in a storage in which a pseudo microgravity generator was placed, and a mass residual ratio was obtained.

  A photograph of the silkworm radish of Example 3 and Comparative Example 3 is shown in FIG. Moreover, the result of the mass residual rate of the silkworm radish of Example 3 and Comparative Example 3 is shown in FIG.

  When the appearance of the golden radish of Example 3 stored in a pseudo microgravity environment is seen, it can be seen that the wilting is suppressed as compared with Comparative Example 3. And it turns out that it is hold | maintained also significantly compared with the comparative example 3 also about the mass of the golden radish of Example 3 stored in the pseudo microgravity environment.

  From the results of Examples 1 to 3, the plant moves water from the root to the leaf and releases water from the stem and leaves, but in a pseudo-microgravity environment, the plant cannot sense the direction in which the water moves, As a result of the suppression of transpiration, the mass residual rate is considered to be maintained high.

(Comparative Example 4, Comparative Example 5: Edamame storage experiment)
As Comparative Example 4, Edamame (produced in Gunma Prefecture, date of acquisition: July 13, 2018, harvest date: unknown) was stored in the same manner as in Example 1 except that it was performed in an environment of 25 ° C. and RH 30%.

  Then, the weight of the green beans on the first day of storage, the first day, the third day, the sixth day, and the ninth day was measured to determine the mass residual rate.

  In addition, as Comparative Example 5, as in the above, green beans were placed in a storage box in which a pseudo microgravity generator was placed, and the mass residual ratio was obtained.

  FIG. 11 shows the results of the mass residual ratio of the green soybeans of Comparative Example 4 and Comparative Example 5. As shown in FIG. 11, no significant difference was found between Comparative Example 4 and Comparative Example 5. Edamame is a fruit and does not have a canal, so it has no ability to sense gravity, and it is thought that the effect of moisture release by the microgravity environment did not occur.

  As described above, it was proved that the release of moisture was suppressed and the freshness was maintained by storing the portion with the fruit and vegetable canal in a pseudo microgravity environment.

  As described above, the method for maintaining freshness of fruits and vegetables and the device for maintaining freshness of fruits and vegetables can suppress the release of moisture from the fruits and vegetables and store them while maintaining their freshness. Therefore, it can be used at various stages from harvesting and consumption of fruits and vegetables, such as storage and distribution until shipment of fruits and vegetables, and storage at retail.

DESCRIPTION OF SYMBOLS 1 Freshness holding device, 10 1st rotary body, 11a, 11b 1st axis | shaft, 12 1st drive device, 12a Output shaft, 20 Fruit and vegetables arrangement | positioning part, 20a Buffer material, 21a, 21b 2nd axis | shaft, 22 2nd drive device, 22a output shaft, 23 gear, 24 gear, 25 bevel gear, 26 rotational force transmission member, 26a bevel gear, 26b shaft, 26c bevel gear, 27 rotational force transmission member, 27a bevel gear, 27b shaft, 27c bevel gear, 28 umbrella Gear, 30 support base, 31a, 31b support member, 32 first drive device accommodation portion, 33 second drive device accommodation portion, 40 acceleration detection device, 50 control device

Claims (6)

Store the part with the fruit and vegetable canal in a quasi-microgravity environment.
A method for maintaining the freshness of fruits and vegetables. The pseudo microgravity environment is an environment that gives an object gravity of 0.1 G or less on an average over time.
The method for maintaining freshness of fruits and vegetables according to claim 1. Store the fruits and vegetables while rotating around two orthogonal axes.
The method for maintaining freshness of fruits and vegetables according to claim 1 or 2. The fruits and vegetables are leaf vegetables, stem vegetables or flower vegetables,
The method for maintaining freshness of fruits and vegetables according to any one of claims 1 to 3. The fruits and vegetables are sprout,
The method for maintaining freshness of fruits and vegetables according to any one of claims 1 to 3. A first rotating body that rotates around a first axis by driving of the first driving device;
A fruit and vegetables arrangement section in which fruits and vegetables are arranged by rotating around a second axis orthogonal to the first axis in the inner area of the rotation area of the first rotating body by driving the second driving device;
An acceleration detection device that detects acceleration by being installed at an arbitrary position of the fruit and vegetables arrangement unit;
A control device for controlling the driving of the first driving device and the second driving device,
The fruit and vegetables arrangement part has a buffer material that suppresses damage to the fruit and vegetables due to rotation,
The control device calculates an acceleration vector from the following equation 1 based on the acceleration data detected by the acceleration detection device, and the first drive so that the integral of the acceleration vector per predetermined time becomes a predetermined value. Controlling the drive of the device and the second drive device;
A = g + rω ² (Formula 1)
(In Formula 1, A, g, r, and ω are the acceleration vector at an arbitrary point P of the fruit and vegetable arrangement part, the gravitational acceleration vector at the point P, and the intersection of the first axis and the second axis, respectively. The distance vector to the point P and the angular velocity vector at the point P are represented.)
An apparatus for maintaining freshness of fruits and vegetables.