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Physical fresh-keeping method for corn grains

A fresh-keeping method and corn kernel technology are applied in the fields of edible seed preservation, seed preservation by radiation/electric treatment, food preservation, etc., which can solve problems such as hidden dangers of food safety, guarantee odor and nutritional value, avoid hidden dangers of food safety, The effect of broad market application prospects

Inactive Publication Date: 2017-05-31
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the soaking treatment of chemical substances inevitably has food safety hazards

Method used

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  • Physical fresh-keeping method for corn grains

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1), raw material pretreatment: hand-picking fresh corn without mildew and pests, removing bracts and filaments, and obtaining fresh corn kernels with a corn threshing machine;

[0027] (2) Soaking and cleaning: immerse the above-mentioned corn kernels in ultra-pure water to remove impurities and dust on the surface of the corn kernels, and then sonicate for 1 hour;

[0028] (3), draining, air blowing and mixing treatment: the treated corn grains are quickly drained at a low temperature of 5°C in the dark, and then dried for 60min at 50°C with a mesh belt type 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 containing corn kernels , and pressurize the high-pressure air chamber to ensure that the pressure in ...

Embodiment 2

[0034] (1), raw material pretreatment: hand-picking fresh corn without mildew and pests, removing bracts and filaments, and obtaining fresh corn kernels with a corn threshing machine;

[0035] (2) Soaking and cleaning: immerse the above-mentioned corn kernels in ultra-pure water to remove impurities and dust on the surface of the corn kernels, and then sonicate for 1 hour;

[0036] (3), draining, air blowing and mixing treatment: the treated corn kernels are quickly drained in the dark at a low temperature of 15°C, and then dried for 90min at 80°C with a mesh belt type airflow 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 containing corn kernels , and pressurize the high-pressure air chamber to ensure that the pressure in...

Embodiment 3

[0042] (1), raw material pretreatment: hand-picking fresh corn without mildew and pests, removing bracts and filaments, and obtaining fresh corn kernels with a corn threshing machine;

[0043] (2) Soaking and cleaning: immerse the above-mentioned corn kernels in ultra-pure water to remove impurities and dust on the surface of the corn kernels, and then sonicate for 1 hour;

[0044] (3), draining, air blowing and mixing treatment: quickly drain the treated corn kernels in the dark at a low temperature of 10°C, and then dry them for 75min at 65°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 containing corn kernels , and pressurize the high-pressure air chamber to ensure that the pressure in t...

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Abstract

The invention discloses a physical fresh-keeping method for corn grains, which can be used for solving the problems of insect damages, low nutritive value and the like of the corn grains in a current storage process. According to the technical scheme, the method comprises the steps of soaking and cleaning fresh corn grains, draining the fresh corn grains, performing high-pressure seepage treatment, vacuum high-voltage electric field corona discharge treatment and vacuum packaging, and then performing cold storage. According to the method provided by the invention, a volatilized mugwort gas can be in an approximate supercritical state under a high-pressure condition, the infiltration capacity is extremely strong, and the corn grains can be infiltrated to achieve an effective antimicrobial and insecticidal effect, and by virtue of the vacuum high-voltage electric field corona discharge treatment, the molecular structures of volatile components in mugwort are destroyed to further remove peculiar smells. The storage period of the corn grains after the treatments is greatly prolonged, and the corn grains are good 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 for corn kernels. Background technique [0002] Corn (scientific name: Zea mays) is an important food crop and an important source of feed, and it is also the food crop with the highest total output in the world. Although the nutritional value of corn is lower than that of other grains, isomaltooligosaccharides can be extracted from corn. Isomaltooligosaccharides are the best among prebiotics. Prebiotics are the food of probiotics and have a close relationship with the growth of probiotics in the human body. relationship, so as to achieve a balanced state of intestinal flora and make the intestinal tract healthy. In addition to eating, corn is also the main raw material for industrial alcohol and shochu. With the growth of China's corn processing industry and the expansion of the corn industry chain, the market size of the corn deep pr...

Claims

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Application Information

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IPC IPC(8): A23B9/26A23B9/06A23B9/10A23B9/00
CPCA23B9/005A23B9/06A23B9/10A23B9/26
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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