Map Modified atmosphere packaging - improve the quality of raw meat for sale

In recent years, the circulation of raw meat cold chain has been basically established in large and medium-sized cities. The scale of raw meat and cooling meat sales in supermarkets is also increasing. However, the health and safety of fresh meat is not due to packaging, appearance, and sales venues. After the changes in other forms have been resolved, the hygiene quality and safety of fresh meat products still remain. In Europe and the United States, most of the sales and packaging of cooled meat use MAP modified fresh-keeping packaging. At present, the MAP modified atmosphere fresh-keeping packaging technology and equipment for domestic fresh meat has basically matured. MAP modified atmosphere fresh-keeping packaging products will become the leading product of supermarket fresh meat, especially the high-oxygen-alcoholic fresh-keeping packaging, and the quality of the sensory and raw fresh products is significant. Improve and eliminate potential safety hazards caused by anaerobic pathogens that may result from the supermarket sales platform model.

Fresh meat is divided into two categories, one is pig, beef and mutton. The color of the meat is red. It requires fresh red meat to keep fresh meat and requires preservation and preservation; the other is chicken, duck, goose and other poultry meat. White, requiring only preservation and preservation. Red meat contains bright red oxymyoglobin. In the high-oxygen environment can maintain the flesh-colored red, reduced to lavender myoglobin in anoxic environment, such as the use of vacuum packaging, red meat will be lavender due to lack of oxygen, then consumers will mistakenly believe that meat Not fresh and affect sales. However, if the red meat modified atmosphere packaging is used, this will not happen. The protective gas for red meat modified atmosphere packaging consists of O2 and CO2. The concentration of O2 needs to exceed 60% to maintain the red color of the meat. The minimum concentration of CO2 is not less than 25% to effectively inhibit bacterial growth. All kinds of red meat have different myoglobin content, so the oxygen concentration of different red meat modified atmosphere packaging needs to be adjusted in order to obtain the best effect of maintaining the color and preservation. The composition of protective atmosphere for pork modified atmosphere packaging is usually 60% to 70% of O2 and 30% to 40% of CO2, and the shelf life is usually 8 to 10 days at low temperature (0°C to 4°C). The purpose of poultry meat modified atmosphere packaging is mainly anti-corrosion. The protective gas consists of N2 and CO2. The poultry meat is packaged with 50% ~ 70% of CO2 and 50% ~ 30% of N2 mixture at low temperature (0 °C ~ 4 °C ) The shelf life is 14 days.

After the slaughter of livestock and poultry, the carcass is contaminated by a large number of bacteria. It needs to be cleaned, cooled, treated with disinfectant, segmented and weighed, and then modified by modified atmosphere packaging to achieve effective preservation. The packaging materials for meat atmosphere modified packaging should use composite plastic films with barrier properties such as PA/PE and PET/PE.

In order to extend the shelf life of fresh meat products and improve the health and safety of products, the industrial chain for the production, circulation, and sales of supermarket fresh meat has been extended from the slaughtering process of cooling meat to sales. In addition, GMP, HACCP and other full-scale quality control management systems must also be extended from slaughter companies to sales platforms. Establishing a complete food safety control technology system for the “base-processing-marketing” industrial chain can enable consumers to really buy high-quality “reliable meat”. Therefore, fresh meat MAP modified atmosphere preservation technology has a huge application prospects, especially in today's consumers focus on food safety and fresh high quality today, more important practical significance and application of urgency.

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Zhangjiagang Deshun Machinery Co., Ltd. specializes in producing all kinds of modified atmosphere packaging machines, such as cassette air-conditioning MAP380, 480 type packaging machine, using programmable, touch-screen display automatic control, bag air-conditioned DZQ600 type, can be The use of gas proportion automatic mixers can meet the challenges of fresh food preservation. In September 2002, Nanjing Agricultural University and Zhangjiagang Deshun Machinery Co., Ltd. jointly researched and developed MAP modified atmosphere fresh-keeping packaging machine, and conducted pilot test at the site of fresh meat production line of Nanjing Tianhuan Food Group Co., Ltd. The meat is cut into fresh-keeping packaging materials and the ideal atmosphere conditions. The shelf life of the pilot products is 8-10 days (04C), and the sensory and hygienic quality indicators have reached the national first-class fresh meat standards. The establishment of a full-scale quality control technology system for meat companies provides an effective technical basis.