Controlled atmosphere preservation method for hairtails

A fresh-keeping method and modified atmosphere fresh-keeping technology, applied in the direction of using chemicals to preserve meat/fish, etc., can solve the problems of prolonging the shelf life of hairtail in refrigeration and not seeing it, and achieve the effect of prolonging the fresh-keeping period and delaying the rapid growth.

Inactive Publication Date: 2010-07-21
SHANGHAI OCEAN UNIV
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  • Claims
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AI Technical Summary

Problems solved by technology

[0006] So far, under conventional refrigeration conditions, the shelf life of hairtail can reach about 5 days. Except for the above repor...

Method used

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Embodiment Construction

[0013] In order to fully disclose the modified atmosphere fresh-keeping method for hairtail of the present invention, it will be described in conjunction with the following examples.

[0014] Cut off the head and tail of the fresh hairtail, cut open the abdominal cavity to remove the internal organs, wash it in ice water, cut it into 6-7cm long hairtail, and drain. Put the above-mentioned drained hairtail sections into packaging bags, one bag for each hairtail section. Use the PBI Densor-MAP mix9000 gas mixer made in Denmark to mix the gas. The volume ratio of the mixed gas is as follows: CO 2 is 80%, O 2 10% and N 2 10%. Use the DQB-360W modified atmosphere packaging machine produced in Shanghai to vacuumize, inflate and heat seal the packaging. With reference to the above process conditions, the numerical ratio of the numerical value of the gas volume (ml) filled in the package to the hairtail weight (g) during the above-mentioned inflation process is 3:1. The above-men...

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Abstract

The invention discloses a controlled atmosphere preservation method for hairtails, comprising the following process procedures of: (1) removing heads, tails and abdominal organs of fresh hairtails, cleaning the fresh hairtails clearly with ice water, cutting into 6 to 7 cm long segments, draining the hairtails, and packing the hairtails in package bags; (2) carrying out air mixture by an air proportion mixer, and vacuumizing, charging and heat sealing by a controlled atmosphere packaging machine for controlled atmosphere packaging; and (3) refrigerating the packaged fresh hairtails, wherein the refrigerating temperature is 4 DEG C+/-1 DEG C. The air charged through controlled atmosphere packaging adopts three kinds of gases of CO2, O2 and N2, and the volume ratio of the gases is as follows: 40 to 80% of CO2, 0 to 20% of O2 and 10 to 50% of N2. The value ratio of the air volume proportion (ml) of the air charged in the package bag to the weight (g) of the hairtails is from 3:1 to 2:1. Compared with the traditional preservation methods for hairtails, the invention not only prolongs preservation period, but also keeps the appearance close to the fresh hairtails.

Description

technical field [0001] The invention belongs to the technical field of food processing and storage, and relates to a fresh-keeping method for aquatic products, in particular to a controlled-atmosphere fresh-keeping method for hairtail. Background technique [0002] In the past 20 years, the total output of aquatic products in the world has maintained continuous growth, from about 90 million tons in the early 1980s to 130 million tons in 2005; at the same time, the output of aquatic products in China has maintained a rapid growth momentum , taking 2001 as an example, China’s aquatic product output reached about 49 million tons in 2005, accounting for 35% of the world’s aquatic product output, ranking first in the world; in 2005, the world’s per capita aquatic product share was about 20 kg ; And China's per capita aquatic product possession in 2005 has reached 33.8 kilograms, exceeding the world's per capita possession, but the per capita consumption is still very low, less th...

Claims

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Application Information

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IPC IPC(8): A23B4/16
Inventor 谢晶杨胜平韩志
Owner SHANGHAI OCEAN UNIV
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