Frankly and as a personal note. We are not particularly fond of ANY method that requires hazardous efforts or chemicals. We are not endourcing these methods as much as sharing options with you our reading family. Please take all precautions and educate yourself THOROUGHLY before attempting ANY risky storage method.
CO2 & Nitrogen Flush
This method can be used instead of in place of dry ice method and reacts just as it does.
Directions are similar:
Simply flush the food with the gas making sure to get the hose down into the very bottom of the container with the food already inside. Sometimes especially with flour, it can spray all over as you fill the can, so be verycareful with your pressure and force of filling.
A welding shop may be able to rent you a CO2 tank and nitrogen gas.
Donna Miller is an author, teacher and entrepreneur. Her favorite roles are that of wife and mother to three home-school graduates. The Millers own and operate which offers Organic and Chemical-free Whole Grains, Bosch Mixers, the NutriMill, instructional tutorials, recipes and more.
Popular Questions
How does the CO2 and nitrogen flush food storage method work?
This food storage method replaces much of the oxygen inside a package with carbon dioxide, nitrogen, or a controlled blend of both gases. Lower oxygen levels slow oxidation and limit the growth of many insects and aerobic microorganisms. The gas is flushed into a clean, moisture-controlled package before it is sealed.
Is a nitrogen flush better than a CO2 flush for long-term food storage?
Nitrogen is generally inert and is often used to protect dry foods from oxidation without adding a reactive gas. Carbon dioxide can also suppress insects and some microorganisms, but it may be absorbed by certain foods or affect flavor and package pressure. The best choice depends on the food, moisture level, package material, and storage goal.
What foods are suitable for the CO2 and nitrogen flush storage method?
This method is most suitable for dry, low-moisture foods such as grains, flour, beans, pasta, and powdered ingredients. Foods should be clean, fully dry, and free of insects before gas flushing because the process does not correct spoilage or unsafe moisture levels. Fresh, wet, or perishable foods require refrigeration, freezing, canning, or another approved preservation method.
What packaging is needed for CO2 and nitrogen flush food storage?
Use packaging that provides a strong gas barrier and can be heat-sealed, such as appropriately rated multilayer pouches, cans, or rigid containers with compatible seals. Remove excess air as thoroughly as the equipment allows, flush the package with the selected gas, and seal it promptly to reduce recontamination. Label each package with the food, treatment date, and any recommended use-by guidance, then store it in a cool, dry, dark location.
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