Method for preserving cordate houttuynia by using gas packing

A fresh-keeping method and inflatable packaging technology, applied in the field of agricultural food science

Inactive Publication Date: 2013-12-11
GUIYANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Houttuynia cordata is impregnated with antistaling agent to keep fresh. The application number 200910227065.9 is "A kind of Houttuynia cordata fresh-keeping processing technology". 2 Modifi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment one (The ratio of mixed gas is: CO 2 : 20%, O 2 : 10%, N 2 : 70%)

[0012] Wash the Houttuynia cordata, put it into the grid frame, use the industrial fan to blow the Houttuynia cordata directly for 1 hour to blow off the waste heat and water, and send it to a cold storage at 2±1°C and relative humidity ≥90% for pre-cooling for 12 hours. Put it into ethylene / vinyl alcohol copolymer fresh-keeping bags under the condition of 0-5°C, 2Kg per bag, vacuumize the packaging bag filled with Houttuynia cordata, fill it with mixed gas, then vacuumize it, and fill it with mixed gas , Sealed by heat-sealing the mouth of the bag; after heat-sealing the mouth of the bag, it is stored in a cold storage at 1-4°C, and the volume ratio of the mixed gas is CO 2 : 20%, O 2 : 10%, N 2 : 70%, the error rate of fresh gas mixing accuracy is less than 1.5%; put it in a cold storage at 2±1°C for storage, and the fresh houttuynia cordata after storage in the cold storage should be...

Embodiment 2

[0014] Embodiment two (The ratio of mixed gas is: CO 2 : 25%, O 2 : 5%, N 2 : 67%)

[0015] Wash the Houttuynia cordata, put it into the grid frame, use the industrial fan to blow the Houttuynia cordata directly for 1 hour to blow off the waste heat and water, and send it to a cold storage at 2±1°C and relative humidity ≥90% for pre-cooling for 12 hours. Put it into ethylene / vinyl alcohol copolymer fresh-keeping bags under the condition of 0-5°C, 2Kg per bag, vacuumize the packaging bag filled with Houttuynia cordata, fill it with mixed gas, then vacuumize it, and fill it with mixed gas , Sealed by heat sealing; after heat sealing the mouth of the bag, it is stored in a cold storage at 1-4°C, and the volume ratio of the mixed gas is CO 2 : 25%, O 2 : 5%, N 2 : 67%, the error rate of fresh gas mixing accuracy is less than 1.5%; put it in the cold storage at 2±1°C for storage, and the fresh houttuynia cordata after storage in the cold storage should be placed in the buffe...

Embodiment 3

[0017] Embodiment three (The ratio of mixed gas is: CO 2 : 30%, O 2 : 8%, N 2 : 62%)

[0018] Wash the Houttuynia cordata, put it into the grid frame, use the industrial fan to blow the Houttuynia cordata directly for 1 hour to blow off the waste heat and water, and send it to a cold storage at 2±1°C and relative humidity ≥90% for pre-cooling for 12 hours. Put it into ethylene / vinyl alcohol copolymer fresh-keeping bags under the condition of 0-5°C, 2Kg per bag, vacuumize the packaging bag filled with Houttuynia cordata, fill it with mixed gas, then vacuumize it, and fill it with mixed gas , Sealed by heat sealing; after heat sealing the bag, it is stored in a cold storage at 1-4°C, and the volume ratio of the mixed gas is CO 2 : 30%, O 2 : 8%, N 2 : 62%, the error rate of fresh gas mixing accuracy is less than 1.5%; put it in the cold storage at 2±1°C for storage, and the fresh houttuynia cordata after storage in the cold storage should be placed in a buffer room with a...

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PUM

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Abstract

The invention discloses a cordate houttuynia preservation method, in particular relates to a method for preserving cordate houttuynia by using gas packing, belonging to the technical field of agricultural food science. The method aims at the characteristics that cordate houttuynia is subjected to brown stain easily, and the brittleness of the cordate houttuynia is reduced in the cordate houttuynia storage process, and can achieve the preservation by using the gas packing method. The method comprises the steps of cleaning the cordate houttuynia, blowing away part of waste heat, pre-cooling, then placing the cordate houttuynia into ethylene/ethylene vinyl alcohol copolymer freshness protection bags, filling a gas formed by mixing CO2, N2 and O2, carrying out heat sealing, and placing the cordate houttuynia in a refrigeration house being 2+/-1 DEG C for storage. The mixed gas comprises the gases of 20-30% of the CO2, 5-10% of the O2 and the balance being the N2 according to the volume rate. The retain freshness gas mixing accuracy error rate is less than 1.5%; the cordate houttuynia can be stored for 30 days; the edible rate of the cordate houttuynia is more than or equal to 85%.

Description

technical field [0001] This patent relates to the field of agricultural food science and technology, specifically a fresh-keeping method for Houttuynia cordata using air-filled packaging combined with low-temperature storage. Background technique [0002] High-efficiency vegetable storage and fresh-keeping technology is the key to ensuring that fruits and vegetables will not rot in peak seasons, continue in off-seasons, expand sales radius, improve economic benefits, and achieve "high yield and harvest". In recent years, with the improvement of living standards, people have higher and higher requirements for the quality of food. Modified atmosphere packaging preservation technology is developing rapidly at home and abroad. Such technologies include vacuum packaging, inflatable packaging, spontaneous modified atmosphere packaging, gas odor absorption packaging, etc. The principle is to inhibit the physiological activity of fruits and vegetables by controlling the change of ga...

Claims

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Application Information

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IPC IPC(8): A23B7/148A23B7/04
Inventor 王瑞马立志谢国芳李白鸽刘晓燕杜超刘志刚
Owner GUIYANG UNIV
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