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Physical fresh keeping method of pomegranates

A fresh-keeping method and pomegranate technology, which are applied in the direction of fresh-keeping of fruits and vegetables, preservation of fruits/vegetables by radiation/electricity treatment, food preservation, etc., can solve problems such as hidden dangers of food safety, guarantee the smell and nutritional value, and significantly inhibit bacteria and insects. The effect of avoiding the hidden danger of food safety

Inactive Publication Date: 2017-04-26
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are inevitable food safety hazards in the chemical substance coating fresh-keeping treatment, and there is a popularization problem in the modified atmosphere fresh-keeping

Method used

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  • Physical fresh keeping method of pomegranates

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Picking: hand-picked mature pomegranates, and pay attention to avoid picking pomegranates with damaged shapes and wormholes;

[0027] (2), soaking and cleaning: immerse the pomegranate picked above in ultra-pure water, remove impurities and dust on the surface of the pomegranate, and then sonicate for 0.5h;

[0028] (3) Drain, air blowing and mixing treatment: keep the treated pomegranate away from light, drain quickly at a low temperature of 1°C, and then dry for 60 minutes at 40°C with a mesh-belt airflow dryer;

[0029] (4) High-pressure osmosis treatment: Add mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 100°C, and use a high-pressure pump to pump the volatilized mugwort essential oil gas into the high-pressure air chamber equipped with pomegranate , and pressurize the high-pressure air chamber to ensure that the pressure in the high-pressure air chamber is at 10MPa. At this time,...

Embodiment 2

[0034] (1) Picking: hand-picked mature pomegranates, and pay attention to avoid picking pomegranates with damaged shapes and wormholes;

[0035] (2), soaking and cleaning: immerse the pomegranate picked above in ultra-pure water, remove impurities and dust on the surface of the pomegranate, and then ultrasonic for 1 hour;

[0036] (3) Drain, air blowing and mixing treatment: keep the treated pomegranate away from light, drain quickly at a low temperature of 20°C, and then dry it for 90 minutes at 60°C with a mesh belt air dryer;

[0037](4) High-pressure osmosis treatment: Add mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 120°C, and use a high-pressure pump to pump the volatilized mugwort essential oil gas into the high-pressure air chamber equipped with pomegranate , and pressurize the high-pressure air chamber to ensure that the pressure in the high-pressure air chamber is 15MPa, at this time,...

Embodiment 3

[0042] (1) Picking: hand-picked mature pomegranates, and pay attention to avoid picking pomegranates with damaged shapes and wormholes;

[0043] (2), soaking and cleaning: immerse the pomegranate picked above in ultrapure water, remove impurities and dust on the surface of the pomegranate, and then sonicate for 0.8h;

[0044] (3), draining, air blowing and mixing treatment: the treated pomegranate is protected from light, drained quickly at a low temperature of 10°C, and then dried for 75min at 50°C with a mesh belt type airflow dryer;

[0045] (4) High-pressure osmosis treatment: Add mugwort essential oil into the heating chamber, promote the volatilization of mugwort essential oil at a constant temperature of 110°C, and use a high-pressure pump to pump the volatilized mugwort essential oil gas into the high-pressure air chamber equipped with pomegranate , and pressurize the high-pressure air chamber to ensure that the pressure in the high-pressure air chamber is at 13MPa. At...

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Abstract

The invention discloses a physical fresh keeping method of pomegranates. The problems that in a conventional storage process, insect pests appear in the pomegranates, so that and the nutrient value of the stored pomegranates is low can be solved. The technical scheme adopted by the invention lies in that the physical fresh keeping method comprises the following steps of soaking the fresh pomegranates, cleaning the soaked pomegranates, draining the cleaned pomegranates, performing high-pressure osmotic treatment, performing corona discharge treatment through a vacuum high-voltage electric field, performing vacuum packaging, and performing cold storage. According to the physical fresh keeping method disclosed by the invention, under high-pressure conditions, volatilized-out argy wormwood gas shows approximate supercritical state, so that the volatilized-out argy wormwood gas has extremely high infiltration capacity and can infiltrate the inner parts of the pomegranates to have the effective effects of restraining bacteria and killing insects; through the corona discharge treatment through the vacuum high-voltage electric field, molecular structures of volatile ingredients in argy wormwood are destroyed, and further peculiar smell is removed; and the preservation period of the processed pomegranates is greatly prolonged, and the processed pomegranates are excellent in color, fragrance and taste.

Description

technical field [0001] The invention belongs to the field of food preservation, and in particular relates to a physical preservation method of pomegranate. Background technique [0002] Pomegranate (Pomegranate) is an exotic berry with a translucent, juicy outer seed coat and a leathery inner seed coat. Pomegranate is warm in nature, sweet or sour in taste, and has the effects of promoting body fluid and quenching thirst, astringent intestines and diarrhea, killing insects and stopping dysentery. Pomegranate contains a variety of organic acids such as punicic acid, which can help digestion and absorption, and increase appetite; pomegranate has obvious astringent, antibacterial, and antiviral effects, inhibits and kills Shigella bacilli, and has a paralytic effect on internal parasites; The vitamin C and carotene contained are antioxidants, which can prevent cell cancer and atherosclerosis; pomegranate leaves can be used to make pomegranate tea, which can moisten dryness and...

Claims

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Application Information

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IPC IPC(8): A23B7/154A23B7/015A23B7/04A23B7/00
CPCA23B7/00A23B7/015A23B7/04A23B7/154
Inventor 汪超胡开群李冬生吴茜石勇徐宁胡勇周梦舟
Owner HUBEI UNIV OF TECH
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