Optimal packaging method for enhancing quality characteristics and extending expiration date of fresh-cut pomegranate, and fresh-cut pomegranate fresh convenience food produced thereby

Abstract

The present invention relates to an optimal packaging method for enhancing quality characteristics and extending the expiration date of fresh-cut pomegranate, and a fresh-cut pomegranate fresh convenience food produced thereby. More specifically, the present invention relates to an oxygen transmission rate (OTR) film for loose pomegranate seeds, a packaging system for loose pomegranate seeds, and a method for maintaining the freshness of loose pomegranate seeds, the OTR film having an oxygen transmission rate of 10,000 cc / m-2 / day-1 / atm-1 to 100,000 cc / m-2 / day-1 / atm-1. The OTR film for loose pomegranate seeds, according to the present invention, enables stably maintaining the oxygen concentration, carbon dioxide concentration, Brix, and pH of pomegranate, and may have the effects of inhibiting microbial growth and suppressing the occurrence of off-flavors.

Description

Optimal packaging method for improving the quality characteristics of fresh-cut pomegranates and extending their shelf life, and fresh-cut pomegranate fresh convenience food manufactured thereby

[0001] The present invention relates to an optimal packaging method for improving the quality characteristics of fresh-cut pomegranates and extending their shelf life, and to fresh-cut pomegranate convenience foods manufactured thereby. More specifically, the present invention relates to a packaging method for fresh-cut pomegranates having an oxygen permeability of 30,000 to 100,000 cc / m. -2 / day -1 / ATM -1 The present invention relates to an oxygen transmission rate (OTR) film for pomegranate, a packaging system for pomegranate, and a method for maintaining the freshness of pomegranate. The OTR film for pomegranate according to the present invention can stably maintain the oxygen concentration, carbon dioxide concentration, Brix, and pH of pomegranate, and can have an effect of inhibiting the growth of microorganisms and the generation of off-flavors.

[0002] The pomegranate tree is a deciduous tree, growing to about 3-5 m tall, with many branches, opposite leaves, and short petioles. Its flowers are bisexual and unisexual. The calyx is tubular and fleshy, divided into 5-7 lobes. The five petals are primarily vermilion, but also come in white, red with a white center, and orange-yellow. The fruit is nearly spherical with a developed receptacle and has a sepal lobe at the end. The rind is thick, and inside there are six hymenophores separated by thin septa, with numerous seeds arranged along the septa. The rind of the ripe fruit is yellowish-white or purple, splits irregularly, and contains juicy white, light pink, or pink seeds. The seeds have a unique sweet-and-sour flavor and are eaten raw, but they are also used as an ingredient in soft drinks. When consumed as tea, only the flowers and fruit peel are used.

[0003]

[0004] Meanwhile, pomegranates are difficult to peel, and even when peeled, the seeds and juice splatter everywhere, making it inconvenient to eat. Therefore, preference for pomegranates that are conveniently ready for consumption is increasing, and demand for pomegranates with their seeds separated is also increasing. Compared to whole pomegranates, pomegranate seeds deteriorate more quickly due to moisture loss and browning, so it's important to maintain freshness throughout the consumption period after separation.

[0005] Fresh-cut pomegranates require quality management techniques to maintain their shelf life for more than seven days during distribution. To improve the shelf life of pomegranates, various studies are being conducted, primarily utilizing MAP (Modified Atmosphere Packaging). MAP is a packaging method that forcibly injects a certain gas component into the packaging material, and is known to be suitable for products that do not breathe. While MAP storage, which is inexpensive and easy to apply in distribution, is effective in maintaining the quality of pomegranates, it can cause damage such as off-flavors due to low oxygen levels within the packaging caused by respiration (Allende et al., 2004). CAP storage technology is suitable for pomegranates, which have a high respiration rate, and the development of a film with oxygen permeability optimized for pomegranates is urgently needed.

[0006]

[0007] The present inventors have made efforts to identify CAP conditions suitable for maintaining the quality of pomegranates by using OTR (oxygen transmission rate) films with different oxygen permeability, and as a result, the oxygen permeability was 30,000 cc / m. -2 / day -1 / ATM -1When using an OTR film, it was confirmed that not only could the oxygen concentration, carbon dioxide concentration (see Example 1), Brix and pH (see Example 2) be stably maintained for more than 7 days compared to other cases (10,000 cc or 50,000 cc), but also the growth of microorganisms (see Example 3) and the occurrence of off-flavors (see Example 4) could be suppressed, and thus the present invention was completed.

[0008]

[0009] Accordingly, the present invention aims to provide an OTR (oxygen transmission rate) film for pomegranate.

[0010] The present invention also aims to provide a pomegranate packaging system using an OTR (oxygen transmission rate) film.

[0011] The present invention also aims to provide a method for maintaining the freshness of pomegranates using an OTR (oxygen transmission rate) film.

[0012]

[0013] However, the problems that the present invention seeks to solve are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0014] The present invention aims to provide an OTR (oxygen transmission rate) film for pomegranates and a method for maintaining the freshness of pomegranates using the OTR (oxygen transmission rate) film.

[0015]

[0016] According to the first implementation example,

[0017] An OTR (oxygen transmission rate) film for pomegranates is disclosed.

[0018] In the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 It may be as follows. More preferably, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM -1 It could be.

[0019] In the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0020]

[0021] According to the second implementation example,

[0022] A container for holding pomegranate seeds; and

[0023] A pomegranate packaging system is disclosed, which includes an oxygen transmission rate (OTR) film fixed to a container so that the pomegranates can be stored in the container.

[0024] In the present invention, the container may include a plastic case, basket or tray.

[0025] In the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day-1 / ATM -1 It may be as follows. More preferably, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM -1 It could be.

[0026] In the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0027]

[0028] According to the third implementation example,

[0029] A step of separating pomegranate seeds from a pomegranate and collecting the pomegranate seeds;

[0030] The step of storing the pomegranate seeds in a container; and

[0031] The container in which the above pomegranates are stored has an oxygen permeability of 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 A step of packaging with an OTR (oxygen transmission rate) film;

[0032] A method for maintaining the freshness of a pomegranate seed containing pomegranate seeds is disclosed.

[0033] In the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m-2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM -1 It could be.

[0034] In the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0035] The oxygen permeability according to the present invention is 30,000 to 100,000 cc / m -2 / day -1 / ATM -1 The OTR (oxygen transmission rate) film for pomegranates can maintain constant oxygen concentration, carbon dioxide concentration, Brix, and pH, as well as suppress microbial growth and off-flavor generation. Therefore, the OTR film according to the present invention has the advantage of maintaining the freshness of pomegranates throughout their shelf life.

[0036]

[0037] Figure 1 shows the results of evaluating changes in oxygen and carbon dioxide concentration according to the storage period of Example 1.

[0038] Figure 2 shows the results of evaluating Brix and pH changes according to the storage period of Example 2.

[0039] Figure 3 shows the results of microbial changes according to the storage period of Example 3.

[0040] I want to share.

[0041] In the OTR film for pomegranate according to the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 It may be as follows. More preferably, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM -1 In one exemplary embodiment, the oxygen permeability of the OTR film is 30,000 cc / m -2 / day -1 / ATM -1 In this case, the oxygen concentration, carbon dioxide concentration, Brix, and pH were maintained constant until the 7th day of storage, and it was confirmed that microbial growth and off-flavor generation could be suppressed.

[0042] In the OTR film for pomegranate according to the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0043]

[0044] 2. Al-Al-I Pomegranate Packaging System

[0045] The present invention

[0046] A container for holding pomegranate seeds; and

[0047] It is an object of the present invention to provide a pomegranate packaging system including an oxygen transmission rate (OTR) film fixed to a container so that the pomegranates can be stored in the container.

[0048] In the pomegranate packaging system according to the present invention, the container may include, but is not limited to, a plastic case, a basket or a tray.

[0049] In the pomegranate packaging system according to the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 It may be as follows. More preferably, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM -1 In one exemplary embodiment, the oxygen permeability of the OTR film is 30,000 cc / m -2 / day -1 / ATM -1 In this case, the oxygen concentration between the container and the film can be kept constant within the range of 10 to 20%, preferably 15 to 20%, until the 7th day of storage, the carbon dioxide concentration can be kept constant within the range of 0.1 to 20%, preferably 0.1 to 17%, and the Brix and pH of the pomegranate can be maintained at 15° to 20° and pH 2 to pH 3, respectively, and it was confirmed that the growth of microorganisms and the occurrence of off-flavors can be suppressed.

[0050] In the pomegranate packaging system according to the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0051]

[0052] 3. How to keep pomegranates fresh

[0053] The present invention

[0054] A step of separating pomegranate seeds from a pomegranate and collecting the pomegranate seeds;

[0055] The step of storing the pomegranate seeds in a container; and

[0056] The container in which the above pomegranates are stored has an oxygen permeability of 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 A step of packaging with an OTR (oxygen transmission rate) film;

[0057] The present invention aims to provide a method for maintaining the freshness of pomegranate seeds.

[0058] In the freshness preservation method according to the present invention, the container may include, but is not limited to, a plastic case, a basket or a tray.

[0059] In the freshness preservation method according to the present invention, the oxygen permeability of the OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 It may be less than 30,000 cc / m. Most preferably, the oxygen permeability of the OTR film is 30,000 cc / m. -2 / day -1 / ATM-1 It could be.

[0060] In the freshness preservation method according to the present invention, the film may be polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

[0061]

[0062] Hereinafter, the present invention will be described in detail through examples. However, the following examples and experimental examples are merely illustrative of one form of the present invention, and the scope of the present invention is not limited by the following examples and experimental examples.

[0063]

[0064] <Example>

[0065] Example 1. Evaluation of changes in oxygen and carbon dioxide concentration according to storage period

[0066] Put the pomegranate seeds in a cup container and have an oxygen permeability of 0 cc / m -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 30,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 After packaging with OTR (oxygen transmission rate) film, it was stored for 7 days at a storage temperature of 10 ± 5°C. Then, the changes in oxygen and carbon dioxide concentrations according to the storage period were measured, and the results are shown in Figure 1.

[0067] As can be seen from Figure 1, 0 cc / m from the second day of storage -2 / day -1 / ATM -1 and 10,000 cc / m -2 / day -1 / ATM -1 The oxygen concentration inside the cup container wrapped with OTR film decreased rapidly, while the carbon dioxide concentration increased rapidly, while 30,000 cc / m -2 / day -1 / ATM -1 It was confirmed that the oxygen and carbon dioxide concentrations inside the cup container wrapped with the above OTR film remained constant until the 7th day of storage.

[0068]

[0069] Example 2. Evaluation of Brix and pH changes according to storage period

[0070] Put the pomegranate seeds in a cup container and have an oxygen permeability of 0 cc / m -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 30,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 After packaging with OTR (oxygen transmission rate) film, it was stored for 7 days at a storage temperature of 10 ± 5°C. Then, the Brix and pH changes according to the storage period were measured, and the results are shown in Fig. 2.

[0071] As can be seen from Figure 2, 30,000 cc / m -2 / day -1 / ATM -1 The Brix of pomegranates packed with OTR film remained almost constant until the 7th day of storage, while it decreased to 0 cc / m from the 6th day of storage. -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 The Brix of pomegranates packaged in OTR film decreased significantly from the 6th day of storage. Meanwhile, the pH of all experimental groups remained at approximately 2.8 to 3 without significant changes until the 7th day of storage.

[0072]

[0073] Example 3. Evaluation of microbial changes according to storage period

[0074] Put the pomegranate seeds in a cup container and have an oxygen permeability of 0 cc / m -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 30,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 After packaging with OTR (oxygen transmission rate) film, it was stored for 7 days at a storage temperature of 10 ± 5°C. Then, the amount of microbial change over the storage period was measured, and the results are shown in Fig. 3.

[0075] As can be seen from Figure 3, due to the low pH of the pomegranate, the number of general bacteria was suppressed to negative or less than 1,000 cfu / mL until the 7th day of storage, showing no significant difference between the experimental groups. However, in the case of fungi, the number was suppressed to 0 cc / m from the 4th day of storage. -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 In pomegranates packaged with OTR film, the increase was significant, while in pomegranates packaged with OTR film, the increase was significant, whereas ... -2 / day -1 / ATM -1 In pomegranates packaged with OTR film, proliferation was inhibited.

[0076]

[0077] Example 4. Off-flavor evaluation according to storage period

[0078] Put the pomegranate seeds in a cup container and have an oxygen permeability of 0 cc / m -2 / day -1 / ATM -1 , 10,000 cc / m -2 / day -1 / ATM -1 , 30,000 cc / m -2 / day -1 / ATM -1 , 50,000 cc / m -2 / day -1 / ATM -1 , 70,000 cc / m -2 / day -1 / ATM -1 , and 100,000 cc / m -2 / day -1 / ATM -1 After packaging with OTR (oxygen transmission rate) film, it was stored for 7 days at a storage temperature of 10 ± 5°C. Then, a sensory evaluation was performed using the ranking test among the attribute difference tests according to the storage period. The sensory evaluation questionnaire was ranked from 1 to 6 in order of weakest to strongest off-flavor, and the 1st place with the weakest off-flavor was given 1 point, and the sum of the rankings was expressed. The sensory evaluation was conducted with 10 executives and employees of Food Factory Co., Ltd., an agricultural corporation, as the subjects, and the results are shown in Table 1 below.

[0079] Oxygen permeability (cc / m) -2 / day -1 / ATM -1 ) Results of sensory evaluation of off-flavor according to storage days010,00030,00050,00070,000100,000Day 12021212221212Day 242418212118Day 323010171720Day 42725121922215Day 30256182324Day 6262562126227Day 30256222023

[0080] As can be seen from Table 1 above, there was no significant difference between the experimental groups until the second day, but from the third day of storage, 30,000 cc / m -2 / day -1 / ATM -1 In the case of pomegranates packaged with OTR film, it was found that there was almost no off-flavor compared to other experimental groups.

[0081] Based on the experimental results of Examples 1 to 4, the most suitable OTR film standard for distribution of pomegranate seeds is 30,000 cc / m. -2 / day -1 / ATM -1 It was confirmed that.

[0082]

[0083] While specific aspects of the present invention have been described in detail above, it should be apparent to those skilled in the art that these specific descriptions are merely preferred implementation examples and are not intended to limit the scope of the present invention. Therefore, the substantial scope of the present invention is defined by the appended claims and their equivalents.

[0084] The oxygen permeability according to the present invention is 30,000 to 100,000 cc / m -2 / day -1 / ATM -1 The OTR (oxygen transmission rate) film for pomegranates can maintain constant oxygen concentration, carbon dioxide concentration, Brix, and pH, as well as inhibit microbial growth and off-flavor generation. Therefore, the OTR film according to the present invention is expected to be useful for pomegranate packaging because it can maintain the freshness of pomegranates throughout their shelf life.

Claims

1. As an OTR (oxygen transmission rate) film for pomegranate, The oxygen permeability of the above OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Above 100,000cc / m -2 / day -1 / ATM -1 An OTR (oxygen transmission rate) film for pomegranate, characterized by the following:

2. In paragraph 1, The oxygen permeability of the above OTR film is 10,000 cc / m -2 / day -1 / ATM -1 Exceeding 50,000cc / m -2 / day -1 / ATM -1 An OTR (oxygen transmission rate) film for pomegranate, characterized by being less than 100%.

3. In paragraph 1, An OTR (oxygen transmission rate) film for pomegranate seeds, characterized in that the film is made of polyethylene (PE), polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC), or a combination thereof.

4. A container to hold the pomegranate seeds; and A packaging system for pomegranates, comprising an OTR (oxygen transmission rate) film for pomegranates according to any one of claims 1 to 3, which is fixed to a container so that pomegranates can be stored in the container.

5. In paragraph 4, A pomegranate packaging system characterized in that the container comprises a plastic case, basket or tray.

6. A step of separating the pomegranate seeds from the pomegranate and collecting the pomegranate seeds; The step of storing the pomegranate seeds in a container; and A step of packaging a container in which the above-mentioned pomegranate grains are stored with an OTR (oxygen transmission rate) film for pomegranate grains according to any one of claims 1 to 3. A method for maintaining the freshness of pomegranate seeds, including:

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