Views: 0 Author: Site Editor Publish Time: 2022-11-21 Origin: Site
Research on the Preservation Technology of Pork Modified Atmosphere Packaging In this experiment, the preservation technology of pork modified atmosphere packaging was studied under the condition of -2 ℃ micro-freezing, and the role of C02 and O2 in the modified atmosphere packaging of pork was determined, and it was confirmed that the preservation effect was very good. gas ratio. The results showed that: in the range of 40% concentration, the higher the concentration of CO2, the more obvious the antibacterial effect, but CO2 will also make the meat sour and produce unnatural brown color; 02 can make the pork appear bright red, but it will also accelerate Corruption; through the C02 and O2: combined test results, it is determined that the gas ratio of modified atmosphere packaging for pork under slightly frozen conditions is 40% C02 + 60% O2, and its fresh-keeping period can reach 24 days.
The effect of packaging materials on the fresh-keeping effect of pork slightly frozen modified atmosphere packaging In this experiment, the effects of different barrier properties of packaging materials on the fresh-keeping effect of pork were studied under the conditions of -2℃ slightly frozen and 40%CO2+60%O2 modified atmosphere packaging. The results show that the PET/CPE packaging bags with medium barrier properties have a good preservation effect, and the preservation period can reach 27 days, followed by PE/PA/EVOH/PA/MPE packaging bags with high barrier properties, and PA, ff'E with low barrier properties. The preservation effect of the packaging bag is very poor.
Based on the above research results, a good process for the preservation of pork micro-freezing modified atmosphere packaging is: use medium barrier PET/CPE packaging bags for modified atmosphere packaging, the gas ratio is 60% 02 + 40% C02, and directly put in after the packaging is completed. Store at -2°C in a slightly frozen condition.