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Food Engineering/Manufacturing/Barrier functions in Food manufacturing


I am currently working on a research project in order to find industries, where a barrier function (e.g. for gases, water but also other components like organic solvents, mineral oil, greases, etc.) in production processes or in products / parts of equipment are needed.
As an expert in food manufacturing, do you feel that a barrier function for liquids and gases is needed in food production?
Thank you very much for your help,
Best wishes,

My experience here is limited.  I have seen many food packaging applications using liquid nitrogen injected into a package to displace air ( i.e., oxygen ). Removing O2 inside the package provides longer shelf life and better color retention.

Another use of nitrogen is for blanketing large storage vessels.  For example, a large tank full of orange juice concentrate will have a layer of nitrogen on the top to prevent oxygen attack.

Note, though, that these techniques are only done for food products, and packages, that are susceptible to oxygen attack.  

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Jim Pfister


Food Engineering/Manufacturing, Food Packaging/Distribution, Engineering Beverage Lines, Reducing operating cost of packaging lines while increasing efficiency. Lean Manufacturing. Incorporating new package technology into existing operations. Training staff to achieve smooth transition from "start-up" to full production. Managing complex projects across multi-disciplinary lines. Equipment PreShipment Factory Acceptance testing and Commissioning programs for new equipment.


Employment history: Over thirty-five years of experience. Managed as much as $40MM in concurrent, multi-disciplinary projects, both domestic and international, and have worked with such firms as Campbell Soup, Coca-Cola, Hershey`s, and Nabisco.

Organizations: An author and speaker, as well as a member of the IoPP. Past Chairman of IoPP`s Consultant`s Council and Member of the Packaging Equipment Performance Committee.

Publications: PMMI Solutions `99, Monthly Packaging Tipsheets


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