Combined mushroom fresh-keeping method of paint film, ozone pretreatment and microporous film modified atmosphere packaging

A technology of modified atmosphere packaging and microporous membranes, which is applied in the fields of fruit and vegetable preservation, protection of fruits/vegetables with a protective coating, and food preservation. Solve problems such as water condensation in packaging films, achieve broad commercial application prospects, reduce the number of surface colonies, and inhibit rot

Inactive Publication Date: 2008-07-30
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not studied how to maintain and control the technical process of suitable air content and relative humidity in the packaging, and has not solved the problem of excessive relative humidity in the packaging of shiitake mushrooms caused by insufficient air permeability of the packaging film, water condensation in the packaging film, and odor of the product due to anaerobic fermentation. And other issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The present invention relates to a method for combining film coating, ozone pretreatment and microporous membrane modified atmosphere packaging to preserve fresh mushrooms, and adopts the following process steps:

[0024] The invention selects raw materials of shiitake mushrooms that are fresh, non-rotten, and have a maturity of 80%. Rinse off the silt and other debris on the surface of the raw material, and dry it with air (room temperature) for 2 hours; use 3.5 μg / L ozone water to soak for 1 minute, remove it and blow it with air (room temperature) and dry it for 2 hours; after being treated with ozone water The shiitake mushrooms were immersed in 1% chitosan solution for coating treatment, and the soaking time was controlled for 30 seconds. After being quickly pulled out, the air was blown (at room temperature) to dry for 6 hours, and then placed in a polypropylene tray; 100g shiitake mushrooms were selected after rapid precooling, Put it into a 180mm×120mm×35mm poly...

Embodiment 2

[0026] Embodiment 2: A method of coating, ozone pretreatment and microporous membrane modified atmosphere packaging of the present invention combined with fresh-keeping shiitake mushrooms adopts the following process steps:

[0027] Select fresh, non-rotten, maturity of 85% shiitake mushroom raw materials; wash off sundries such as silt and sand on the surface of shiitake mushroom raw materials, blow dry (at room temperature) for 2.5 hours; then use 4.0μg / L ozone water soaking treatment, soaking time: 1 Minutes, remove and air blow (room temperature) to dry for 2.5 hours; The shiitake mushrooms after ozone water treatment are immersed in 1% chitosan solution for coating treatment, control soaking time: 25 seconds, quickly remove and air dry (room temperature) for 6.5 hour, the moisture content of mushrooms is controlled at 87%. Then put it into a polypropylene tray and fill it with a concentration of 4% to 5% O 2 , 10% to 13% concentration of CO 2 (The rest is nitrogen) conf...

Embodiment 3

[0028] Embodiment 3: A method of coating, ozone pretreatment and microporous membrane modified atmosphere packaging combined with fresh-keeping shiitake mushrooms of the present invention adopts the following process steps:

[0029] Select fresh, non-rotten, and 90% maturity shiitake mushroom raw materials; rinse off the silt and other debris on the surface of the shiitake mushroom raw materials, and dry them with air (at room temperature) for 3 hours; soak them in 4.5 μg / L ozone water, soaking time: 1 minute , pull out blowing (room temperature) and dry for 3 hours; the shiitake mushrooms after ozone water treatment are immersed in 1% chitosan solution and carry out coating process, control soaking time for 35 seconds, quickly pull out the back blowing (room temperature) and dry for 7 hours, Then put it into a polypropylene tray, the moisture content is controlled at 85%; then put it into a polypropylene tray, seal it with polyethylene film, and set 340μm on the original film ...

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PUM

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Abstract

The invention relates to a shiitake mushroom fresh-keeping method combining pretreatment by coating and ozone with microporous membrane modified atmosphere packaging, which is specialized in spoilage control and quality maintenance in the process of packaging, storing and transporting for the picked shiitake mushroom. The invention belongs to a field of fruit and vegetable preserving and storing technique, which is characterized in that: fresh shiitake mushroom raw material without rottenness and maturity is selected; the shiitake mushroom is dried with air after being rinsing out the impurities as silt, etc., on the surface; the shiitake mushroom after the ozone water treatment is dealt with coating in chitosan solution, dried and then placed in a polypropylene tray for enveloping and packaging with microporous membrane and storing in a temperature of 0-5 DEG C. The invention can effectively reduce the number of bacteria on the product surface and the product respiration rate, effectively control the gas concentration and relative humidity in the package, reduce the spoilage rate of the product, ensure the editable safety of the product and lengthen the shelf life of the product.

Description

technical field [0001] The invention relates to a fresh-keeping method of shiitake mushrooms combined with coating, ozone pretreatment and microporous membrane modified atmosphere packaging, which is specially used for spoilage control and quality maintenance during post-harvest packaging, storage and transportation of shiitake mushrooms, and belongs to the technical field of fresh-keeping and storage of fruits and vegetables. Background technique [0002] Fresh fruits and vegetables are perishable products. It is estimated that the annual loss of fruits and vegetables due to aging, deterioration and rot in the world is as high as 30% on average, and 10-20% in developed countries. In developing countries that lack refrigeration equipment, post-harvest losses of fruits and vegetables Up to 30-50%. On the basis of the traditional low-temperature refrigeration and preservation technology for fruits and vegetables, in recent years, modified atmosphere packaging (MAP) and compreh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A23B7/00A23B7/16A23B7/152
Inventor 卢立新蔡莹
Owner JIANGNAN UNIV
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