• Dairy
  • Dairy
  • Dairy
  • Dairy

Dairy

The wide variety of packaging designs and formats available for dairy products allows our efficient tray sealing machines to help utilise fully recyclable trays, extend shelf life and create high visual appeal on-shelf.

The ability to use resealable film to tray seal enables the end consumer to keep the product fresher for longer in the same pack, minimising food waste.

Proseal, as part of the JBT Corporation family, is capable of delivering integrated production and packaging solutions that extend shelf life, preserve quality and provide food safety to global consumers. To find out more about our processing solutions, click here.

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    For full MAP Guide Please click here.

    Modified Atmosphere Packaging

    Modified Atmosphere Packaging is a food packaging method where the Earth's normal breathable atmosphere has been modified by either a single gas or a mixture of gases. It is generally used with a barrier film with low oxygen transmission and is sometimes referred to as Gas Flushing.

    The atmosphere in an MA package may contain N2, O2, CO2. Each food product has its own ideal gas mixture to ensure the longest shelf life possible.

    The Gases

    Carbon dioxide (CO2)

    Carbon dioxide inhibits the growth of most aerobic bacteria and moulds. Generally speaking, the higher the level of CO2, the longer the achievable shelf-life. In most cases where CO2 is needed to control bacterial and mould growth, a minimum of 20-30% is required. However, CO2 can be absorbed by fats and water and in some cases cause pack collapse.

    Nitrogen (N2)

    Nitrogen is an inert gas and is used to exclude air; it is also used as a balance gas (filler gas) to make up the difference in a gas mixture. It helps prevent pack collapse where the CO2 has been absorbed. For modified atmosphere packaging of dried snack products, 100% nitrogen is used to prevent oxidative randicity.

    Oxygen (O2)

    In many foods oxygen should be excluded but there are often good reasons for it to be present in the map gas mixture. 

    • To maintain fresh, natural colour in red meat
    • To maintain respiration (in fruit and vegetables)
    • To inhibit growth of anaerobic organisms (in some types of fruit and vegetables)

    Ideal residual oxygen levels are dependent upon each customer's shelf life trials and tolerances.

    Food manufacturers should seek the advice of Food grade gas suppliers before deciding which gas supply mode is the most appropriate for their needs.

    Guidelines have been quoted in the CCFRA (Campden and Chorleywood Food Research Association) map guide document.

    Our MAP experts and Test Kitchen are standing by to help you with your enquiries.

    Please get in touch or call us to find out more.

    Product Nitrogen
    N2
    Oxygen
    O2
    Carbon Dioxide
    CO2
    Achievable Shelf Life
    Days
    Beef   70–80 20–30 5 to 8
    Lamb   70–80 20–30 5 to 8
    Pork   70–80 20–30 5 to 8
    Chicken various   70–80 20–30 10 to 14
    Chicken various 50 20 30 10 to 14
    Chicken various 70   30 10 to 14
    Turkey   70–80 20–30 7 to 14
    Turkey 70   30 10 to 14
    Duck   70–80 20–30 10 to 14
    Sausage   70–80 20–30 10 to 14
    Bacon 70   30 14 to 21
    Cooked Meat 70   30 14 to 21
    Cooked Chicken 70   30 14 to 21
    Charcuterie 70   30 14 to 21
    Raw White Fish 30 30 40 4 to 6
    Raw Oily Fish 70   30 4 to 6
    Crustaceans 30 30 40 4 to 6
    Cooked Fish 70   30 7 to 21
    Ready Meals 50–70   30–50 7 to 14
    Sandwiches 70   30 3 to 5
    Pies/Sausage Rolls 70   30-50  7 to 14 
    Quiche 70   30–50 7 to 14
    Salads/Vegetables 90 5 5 5+
    Hard Cheese 50–70   30–50 2 to 12
    Pasta 50   50 3 to 4
    Bakery 0–30   70–100 2 to 12