Method for delaying softening of picked prunus salicina lindl fruits

Abstract

The invention discloses a method for delaying the softening of picked plums, which comprises the following steps: directly putting the freshly picked plums into a special fruit box, the special fruit box comprises a box body, a box cover and a plurality of trays, the box cover covers the box body, each tray comprises a containing groove, a plurality of fruit grooves are formed in the containing groove, and a soft cushion stained with a fruit preservative is placed in each fruit groove; a storage space is formed in the box cover, a plurality of through holes are formed in the inner side of the box cover, an ice bag and a dry ice bag are placed in the storage space, and a plurality of air holes are formed in the dry ice bag. According to the method for delaying softening of the picked prunus salicina lindl fruits, the preservation modes of cooling, oxygen content reduction, fruit preservative and the like are combined, and the treatment method for delaying softening of the prunus salicina lindl fruits is formed. The fresh-keeping modes of temperature reduction, oxygen content reduction and the fruit fresh-keeping agent cooperate with one another, so that the prunus salicina lindl can be kept fresh in hardness, the surface appearance of the prunus salicina lindl cannot be damaged, and the prunus salicina lindl can be transported for a long distance and is particularly suitable for network sales.

Description

Technical Field

[0001] The invention belongs to the technical field of fruit storage, and in particular relates to a method for delaying the softening of loquat fruits after harvest. Background Art

[0002] Plum is also called drunken plum. Plum fruit is oblate, with deep sutures, asymmetrical sides, and an average weight of 48-60g; the peel is dark purple-red, with white fruit powder on the peel; the flesh is orange-yellow, softens after ripening, and has a strong sweet taste, rich juice, and rich aroma. Plum matures in late June, and the climate in the production area is hot and humid. After picking, plums tend to soften quickly and need to be eaten as soon as possible, resulting in a short storage period for plums. In the prior art, plums are generally stored in an ice-cooling manner. Although this method can extend the shelf life of plums at low temperatures for a certain period of time, due to the high temperature of the environment, ice is also very easy to melt, and the shelf life of plums is limited. Using preservatives to treat freshly picked plums can also extend the shelf life to a certain extent. However, atomizing or soaking plums will destroy the white fruit powder on the surface of the fruit, affect the appearance of the fruit, and cause consumers to worry about drug residues. Therefore, it is necessary to improve the storage technology of loquat. Summary of the invention

[0003] In order to solve the above technical problems, the technical solution adopted by the present invention is: a method for delaying the softening of loquat fruit after harvest, comprising directly placing freshly picked loquats into a special fruit box, the special fruit box comprising a box body, a box cover and a plurality of trays, the box cover is covered on the box body, the trays are located in the box body and are arranged in sequence from top to bottom, the tray comprises a receiving groove, the receiving groove is provided with a plurality of fruit grooves, a soft pad with fruit preservative is placed in the fruit groove, one fruit groove is for one loquat, a storage space is provided inside the box cover, a plurality of through holes respectively connected to the storage space are provided on the inner side of the box cover, an ice bag and a dry ice bag are placed in the storage space, the ice bag is sealed and filled with ice cubes, the dry ice bag is filled with dry ice, and the dry ice bag is provided with a plurality of ventilation holes.

[0004] As a preferred embodiment of the above technical solution, the upper end of the tray is bent outwards on all sides to form a supporting edge, and the supporting edge and the bottom of the fruit groove are respectively provided with ventilation holes.

[0005] As a preferred embodiment of the above technical solution, a support frame is placed inside the box, the bottom tray is placed on the support frame, and ice bags and dry ice bags are placed inside the support frame.

[0006] As a preferred embodiment of the above technical solution, all the cushions on each layer of the tray cover are connected together, and the cushions are made of sponge or cloth. The cushions are immersed in the fruit preservative for at least 1 hour and then laid in the receiving grooves in the tray, and the parts of the cushions corresponding to the fruit grooves are recessed toward the inside of the fruit grooves.

[0007] As a preferred embodiment of the above technical solution, the box body and the box cover are respectively made of foam plastics, and the tray is made of plastics.

[0008] As a preferred embodiment of the above technical solution, the fruit preservative includes an aqueous solution of any one of geraniol and leaf alcohol or an aqueous solution of a mixture of the two.

[0009] The beneficial effect of the present invention is that the method for delaying the softening of loquat fruit after harvest of the present invention combines cooling, reducing oxygen content, fruit preservatives and other preservation methods to form a treatment method for delaying the softening of loquat fruit. The cooling, reducing oxygen content, and fruit preservatives are coordinated with each other, so that the loquat can be kept fresh in terms of hardness and the surface appearance can be preserved, so that the loquat can be transported over long distances, and is particularly suitable for online sales. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the structure of the present invention;

[0011] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention. DETAILED DESCRIPTION

[0012] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0013] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0014] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] like Figure 1-2 As shown, a method for delaying the softening of loquat fruit after harvest comprises directly placing the freshly picked loquats into a special fruit box, the special fruit box comprises a box body 1, a box cover 2 and a plurality of trays 3, the box cover 2 covers the box body 1, the trays 3 are located in the box body 1 and are arranged sequentially from top to bottom, the tray 3 comprises a receiving groove 4, the receiving groove 4 is provided with a plurality of fruit grooves 5, the fruit grooves 5 are provided with soft pads 6 with fruit preservatives, one fruit groove 5 is for one loquat, the box cover 2 is provided with a storage space 7 inside, the inner side of the box cover 2 is provided with a plurality of through holes 8 respectively connected to the storage space 7, an ice bag 9 and a dry ice bag 10 are placed in the storage space 7, the ice bag 9 is sealed and filled with ice cubes, the dry ice bag 10 is filled with dry ice, and the dry ice bag 10 is provided with a plurality of ventilation holes 11. The freshly picked loquats are directly placed in a special fruit box. After the box cover 2 is covered with a dry ice bag 10 and an ice bag 9, the interior of the box body 1 is kept at a low temperature by the ice bag 9 and the dry ice bag 10. At the same time, the dry ice in the dry ice bag 10 slowly releases carbon dioxide, inhibiting the aerobic respiration of the cells in the loquats. In addition, the fruit preservative in the soft pad 6 is slowly released under the conditions of low temperature and high carbon dioxide concentration. The fruit preservative does not directly soak the loquats, will not destroy the white frost on the surface of the loquats, and will not affect the appearance of the loquats. The fruit preservative further reduces the softening speed of the loquats. The fruit preservative can be a commercially available loquat preservative.

[0016] Furthermore, the upper end of the tray 3 is bent outwards around to form a supporting edge 12, and the supporting edge 12 and the bottom of the fruit groove 5 are respectively provided with a ventilation hole 20. The supporting edge 12 allows a certain distance to be maintained between the inner wall of the box body 1 around the tray 3, forming a buffering effect on the tray 3 and the plums to prevent the plums from being damaged. Each fruit groove 5 forms a convex portion protruding downward on the lower surface of the tray 3, and a fruit groove 5 is formed inside the convex portion. The lower end of the convex portion is recessed upward for a certain distance, forming an upper limit groove for the upper end of the plum on the tray 3 below to extend into. In this way, the upper and lower ends of the plums can be limited to prevent damage. The ventilation hole 20 is conducive to the release of the preservative and carbon dioxide.

[0017] Furthermore, a support frame 13 is placed inside the box 1, and the bottom tray 3 is placed on the support frame 13, and ice packs 9 and dry ice packs 10 are placed inside the support frame 13. The support frame 13 can not only support the tray 3, but also form a storage space for the ice packs 9 and dry ice packs 10. The ice packs 9 and dry ice packs 10 inside the support frame 13 further have a cooling effect. The carbon dioxide released in the dry ice pack 10 inhibits the breathing of the loquats and slows down the softening of the loquats.

[0018] Furthermore, all the cushions 6 on each layer of the tray 3 are connected as one, and the cushions 6 are made of sponge or cloth. The cushions 6 are soaked in the fruit preservative for at least 1 hour before being laid in the receiving groove 4 in the tray 3, and the portion of the cushions 6 corresponding to the fruit groove 5 is recessed toward the inside of the fruit groove 5. The cushions 6 are laid on the tray 3 in their entirety. After the cushions 6 are soaked in the fruit preservative, they are slightly squeezed dry so that there is no obvious water dripping from the cushions 6 in a natural state.

[0019] Furthermore, the box body 1 and the box cover 2 are respectively made of foam plastics, and the tray 3 is made of plastics. After the box cover 2 is covered on the box body 1, the connection is sealed with tape. The foam plastic is a commonly used polyurethane foam plastic for express packaging.

[0020] Further, the fruit preservative includes an aqueous solution of any one of geraniol and leaf alcohol or an aqueous solution of a mixture of the two. The fruit preservative is preferably an environmentally friendly and healthy natural preservative. The preservative is soaked in the inside of the soft pad 6 and can be slowly released.

[0021] It is worth mentioning that the technical features such as preservatives and dry ice involved in the patent application of this invention should be regarded as prior art. The specific structure, working principle and possible control method and spatial layout method of these technical features can be selected by conventional methods in the field, and should not be regarded as the inventive point of this patent. This patent will not be further elaborated.

[0022] The preferred specific embodiments of the present invention are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A method for delaying the softening of loquat fruit after harvest. It is characterized in that The invention comprises directly placing freshly picked loquats into a special fruit box, wherein the special fruit box comprises a box body, a box cover and a plurality of trays, wherein the box cover is placed on the box body, the trays are located in the box body and are arranged in sequence from top to bottom, the tray comprises a receiving groove, wherein the receiving groove is provided with a plurality of fruit grooves, wherein soft pads with fruit preservatives are placed in the fruit grooves, wherein one loquat is placed in one fruit groove, wherein a storage space is arranged inside the box cover, wherein a plurality of through holes respectively connected to the storage spaces are arranged on the inner side of the box cover, wherein an ice bag and a dry ice bag are placed in the storage space, wherein the ice bag is sealed and filled with ice cubes, wherein the dry ice bag is filled with dry ice, and wherein the dry ice bag is provided with a plurality of air holes.

2. The method for delaying the softening of loquat fruit after harvest as claimed in claim 1, It is characterized in that The upper end of the tray is bent outwards to form a supporting edge, and the supporting edge and the bottom of the fruit groove are respectively provided with ventilation holes.

3. The method for delaying the softening of loquat fruit after harvest as claimed in claim 1, It is characterized in that A support frame is placed inside the box body, a bottom tray is placed on the support frame, and ice bags and dry ice bags are placed inside the support frame.

4. The method for delaying the softening of loquat fruit after harvest as claimed in claim 1, It is characterized in that All the cushions on each layer of the tray cover are connected together. The cushions are made of sponge or cloth. The cushions are soaked in the fruit preservative for at least 1 hour and then laid in the receiving groove in the tray. The parts of the cushions corresponding to the fruit grooves are recessed toward the inside of the fruit grooves.

5. The method for delaying the softening of loquat fruit after harvest as claimed in claim 1, It is characterized in that The box body and the box cover are respectively made of foam plastics, and the tray is made of plastics.

6. The method for delaying the softening of loquat fruit after harvest as claimed in claim 1, It is characterized in that The fruit preservative comprises an aqueous solution of any one of geraniol and leaf alcohol or an aqueous solution of a mixture of the two.

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