Spontaneous micropore controlled atmosphere preservation box for fresh-cut broccoli

Abstract

The utility model discloses a spontaneous micropore controlled atmosphere preservation box for fresh-cut broccoli, which comprises an outer box body and an inner box body, the outer box body is provided with a space for accommodating the inner box body, the inner box body is provided with a space for accommodating vegetables, the bottom of the inner box body is provided with a bottom support, and a space is reserved between the bottom of the inner box body and the bottom of the outer box body. On the basis of the principle of balanced modified atmosphere packaging, the permeability of O2, CO2 and water vapor in the packaging bag film is changed by adjusting the size and the number of the micropores, so that the permeability is matched with the breathing rate of fresh-cut broccoli in the packaging bag, a new balance is established in the packaging bag, and the refreshing time of the fresh-cut broccoli is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of fresh-keeping boxes, in particular to a spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli. Background Art

[0002] Fresh-cut processing will destroy the integrity of broccoli cells, cause the outflow of nutrients, significantly increase the respiration rate, and accelerate material consumption, which limits the development of the fresh-cut broccoli industry. Utility Model Content

[0003] The utility model aims to provide a spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli, so as to solve the problem that the fresh-cut broccoli is easy to rot and has a short shelf life.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli, comprising an outer box body and an inner box body, wherein the outer box body is provided with a space for accommodating the inner box body, the inner box body is provided with a space for accommodating vegetables, a bottom support is provided at the bottom of the inner box body, and a space is left between the bottom of the inner box body and the bottom of the outer box body.

[0006] Furthermore, connecting blocks are provided on four outward sides of the top of the inner box body and on four inward sides of the top of the outer box body.

[0007] Furthermore, the connection block is provided with a protrusion and a recess, the protrusion and the recess can overlap, and the outer box body and the inner box body are connected via the protrusion and the recess on the connection block.

[0008] Furthermore, the base is provided with a plurality of grooves, and the base is also provided with a plurality of ventilation holes.

[0009] Furthermore, the vent holes not only maintain air circulation in the inner box body and the outer box body, but also allow water produced by the respiration of vegetables to flow from the vent holes into the bottom of the outer box body.

[0010] Furthermore, the inner box body is covered with a microporous membrane.

[0011] Furthermore, the microporous membrane is covered on the inner box body by heat sealing.

[0012] Furthermore, the microporous membrane is provided with 3-5 small holes, the diameter of the small holes is 100-300 μm, and a CO2 laser machine is used for drilling.

[0013] Furthermore, the outer box body and the inner box body are integrated, and the outer box body is 13-20 cm long, 13-20 cm wide, and 5-8 cm high.

[0014] Furthermore, the outer box also includes a drying bag and an antibacterial bag.

[0015] Based on the above technical solution, the embodiment of the utility model can at least produce the following technical effects:

[0016] The spontaneous microporous modified atmosphere fresh-keeping box provided by the utility model is based on the principle of balanced modified atmosphere packaging. The permeability of O2, CO2 and water vapor in the packaging bag film is changed by adjusting the size and number of micropores to match the respiration rate of the fresh-cut broccoli in the package, thereby establishing a new balance in the package and extending the shelf life of the fresh-cut broccoli. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the box body in the embodiment of the utility model;

[0020] In the figure: 1. outer box body; 2. inner box body; 3. small hole; 4. bottom bracket; 5. connecting block. DETAILED DESCRIPTION

[0021] The following will combine the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply 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 a limitation on the present application; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance; in addition, 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; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0023] Example 1

[0024] A spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli comprises an outer box body 1 and an inner box body 2. The outer box body 1 is provided with a space for accommodating the inner box body 2, the inner box body 2 is provided with a space for accommodating vegetables, a bottom support 4 is provided at the bottom of the inner box body 2, and a space is left between the bottom of the inner box body 2 and the bottom of the outer box body 1.

[0025] Connecting blocks 5 are disposed on four outward sides of the top of the inner box body 2 and four inward sides of the top of the outer box body 1 .

[0026] The connection block 5 is provided with a protrusion and a depression, and the protrusion and the depression can overlap, and the outer box body 1 and the inner box body 2 are connected via the protrusion and the depression on the connection block 5 .

[0027] The base 4 is provided with a plurality of grooves, and the base 4 is also provided with a plurality of ventilation holes.

[0028] The inner box body 2 is covered with a microporous membrane.

[0029] The microporous membrane is provided with four small holes 3, and the pore diameter of the small holes 3 is 100±3 μm.

[0030] Example 2

[0031] A spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli comprises an outer box body 1 and an inner box body 2. The outer box body 1 is provided with a space for accommodating the inner box body 2, the inner box body 2 is provided with a space for accommodating vegetables, a bottom support 4 is provided at the bottom of the inner box body 2, and a space is left between the bottom of the inner box body 2 and the bottom of the outer box body 1.

[0032] The outer box body 1 and the inner box body 2 are integrated, and the outer box body 1 is 13-20 cm long, 13-20 cm wide, and 5-8 cm high.

[0033] The base 4 is provided with a plurality of grooves, and the base 4 is also provided with a plurality of ventilation holes.

[0034] The outer box body 1 also includes a drying bag and an antibacterial bag.

[0035] The inner box body 2 is covered with a microporous membrane. The microporous membrane is provided with four small holes 3, and the pore diameter of the small holes 3 is 100±3 μm.

[0036] The microporous membrane is covered on the inner box body 2 by heat sealing.

[0037] test:

[0038] Microporous natural modified atmosphere packaging of fresh-cut broccoli, the initial gas is natural air; the packaging box is punched with three different numbers of holes (3, 4, 5) and pore sizes (100±3 μm, 200±5μm, 300±10 μm):

[0039] Considering the subsequent preservation experiment, the weight of fresh-cut broccoli is 150±2 g. All packaging boxes were stored at 4±0.5℃ for 15 days and the relevant data were measured. Each test was repeated 3 times to measure the chlorophyll content, weight loss rate, and sensory evaluation. The chlorophyll was determined by acetone extraction method to calculate the total content of chlorophyll a and chlorophyll b; the weight loss rate was determined by weighing method, weight loss rate = 100% × (pre-storage mass-post-storage mass) / pre-storage mass; the sensory evaluation was based on a 9-point system, and broccoli was scored from five aspects: appearance, color, flower head, hardness, and smell, with a maximum score of 9 points and a minimum score of 1 point.

[0040] (1) Chlorophyll (mg / g)

[0041] As for chlorophyll, under the conditions of 4 holes and a hole diameter of 100±3 μm, the chlorophyll content of fresh-cut broccoli was the highest (average 0.58 mg / g) after being stored at 4±0.5℃ for 15 days, which was only 35% lower than the initial content (0.91 mg / g).

[0042] (2) Weight loss rate (%)

[0043] As for the weight loss rate, under the conditions of 4 holes and a hole diameter of 100±3 μm, the weight loss rate of fresh-cut broccoli was the lowest (average 2.67%) after being stored at 4±0.5℃ for 15 days.

[0044] (3) Sensory score (points)

[0045] Sensory score: under the conditions of 4 holes and a hole diameter of 100±3 μm, the sensory score of fresh-cut broccoli was the highest (average 8.33 points) after being stored at 4±0.5℃ for 15 days.

[0046] The structures, functions and connection forms disclosed in this article can be implemented in other ways. For example, the embodiments described above are only exemplary, for example, multiple components can be combined or integrated into another component; in addition, each functional component in each embodiment of this article can be integrated into one functional component, or each functional component can exist physically separately, or two or more functional components can be integrated into one functional component.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli, characterized in that: The invention comprises an outer box body (1) and an inner box body (2), wherein the outer box body (1) is provided with a space for accommodating the inner box body (2), the inner box body (2) is provided with a space for accommodating vegetables, a bottom support (4) is provided at the bottom of the inner box body (2), and a space is left between the bottom of the inner box body (2) and the bottom of the outer box body (1).

2. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 1, characterized in that: Connecting blocks (5) are provided on the four outward sides of the top of the inner box body (2) and on the four inward sides of the top of the outer box body (1).

3. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 2, characterized in that: The connection block (5) is provided with a protrusion and a recess, the protrusion and the recess can overlap, and the outer box body (1) and the inner box body (2) are connected via the protrusion and the recess on the connection block (5).

4. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 1, characterized in that: The base bracket (4) is provided with a plurality of grooves, and the base bracket (4) is also provided with a plurality of ventilation holes.

5. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 1, characterized in that: The inner box body (2) is covered with a microporous membrane.

6. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 5, characterized in that: The microporous membrane is provided with 3-5 small holes (3), and the diameter of the small holes (3) is 100-300 μm.

7. The spontaneous microporous atmosphere-controlled fresh-keeping box for fresh-cut broccoli according to claim 1, characterized in that: The outer box body (1) and the inner box body are integrated, and the outer box body (1) is 13-20 cm long, 13-20 cm wide, and 5-8 cm high.

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