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  • Edible Oils & Fats

Please note  

As of March 1, 2019, this product/service was divested to Messer and retained by Linde as a condition to complete the Linde and Praxair merger.

Learn more about the divestiture

Edible Oils & Fats

Preserving the quality of oils and fats by preventing oxidation

Oils and fats, and foods with a high oil or fat content, are susceptible to deterioration through oxidation. The objective here is to preserve quality by avoiding oxidation.

Oxidation refers to a chemical reaction where atmospheric oxygen attacks the fat acid chains of triglyceride molecules. The oxygen attack can take place at ambient temperatures or below (i.e. during normal storage of oils or finished food products). It can also occur at elevated temperatures, such as during processing or deep-fat frying.

In order to protect the oil and improve oil stability, oxygen should never come in contact with the product - at any stage of the production process. In line with the worldwide trend towards the replacement of harsh physical/chemical preservative methods with less severe alternatives, the food industry is increasingly relying on nitrogen to resolve the oxidation challenge.

Nitrogen is a chemical element. Because it is an inert gas, it does not interact directly with the product. It is used to displace atmospheric air (and thus oxygen) and water vapor to avoid oxidation. There are two main processes for replacing oxygen with nitrogen: sparging to remove the dissolved oxygen; and blanketing to assure the absence of oxygen in the headspaces.

Drawing on our deep understanding of both quality and safety requirements, we have developed a range of inerting and other solutions to stabilize oil and fat products at all processing stages.

Application highlights

  • Purging & sparging with N2 to remove dissolved oxygen

  • Blanketing to remove oxygen in the headspace

  • Hydrogenation using hydrogen to prolong shelf life and increase stability by modifying physical properties. 

Any Questions?
  • For Linde and Praxair call: 
    1-844-44 LINDE
    (1-844-445-4633)
    info@praxair.com

Any Questions?
  • For Messer call:
    1-800-232-4726
    www.messer-us.com

Related Links
  • Carbonation
  • Controlled Atmosphere Stunning
  • Dry Ingredient Chilling System
  • Enhancing Greenhouse Growth
  • Food Chilling & Freezing
  • Hydrogenation
  • In-Transit Refrigeration
  • Liquid Nitrogen Dosing
  • Modified Atmosphere Packaging
  • Oxidation in Aquaculture
  • Gas Mixtures for Food & Beverages
  • Specialty Gases for Olfactometry
Downloads
Atmofry(PDF 2.0 MB)
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