When it comes to long-term food storage, most preppers would agree that limiting oxygen exposure is critical for extending shelf life.
Using the right oxygen absorbers allows you to easily create an airtight environment, preserving foods for years while retaining nutrition and flavor.
In this comprehensive guide, you'll discover everything you need to know about properly integrating oxygen absorbers into your food stockpile. From choosing the correct sizes and types to proper usage and storage, you'll gain the knowledge to maximize shelf life through strategic oxygen control.
Introduction to Oxygen Absorbers for Food Storage
Oxygen absorbers are small packets of iron powder that help remove oxygen from closed containers. When exposed to oxygen, the iron powder rusts, binding to oxygen molecules and removing them from the air space. This oxygen absorption process creates an anaerobic environment that slows food spoilage.
Using oxygen absorbers allows preppers to store dehydrated and freeze-dried foods for much longer periods of time while preserving nutrients and preventing waste. Key benefits of using oxygen absorbers include:
- Extended shelf life - Removing oxygen can extend shelf life of dried foods from months to years
- Preservation of nutrients - Anaerobic environment protects vitamins and minerals
- Prevention of food spoilage - Greatly reduces mold, mildew, and bacterial growth
- Cost savings - Less wasted food means more value from your storage investment
Understanding the Role of Oxygen Absorbers in Preserving Food
Oxygen absorbers work by absorbing the oxygen inside a container through a chemical reaction. The iron powder rusts when exposed to oxygen, binding oxygen molecules in the process. Over time, this removes nearly all the oxygen from the container, creating an anaerobic environment.
Without oxygen, aerobic bacteria cannot grow, mold cannot form, and other food spoilage processes are halted. This is why oxygen absorber packets help dried foods stay fresh for years rather than months. The lack of oxygen simply prevents the chemical reactions that lead to spoilage.
For best results, the container should be air-tight, with an oxygen permeability rate of no more than 1 cc of oxygen per 100 sq in over 24 hours. The number of oxygen absorber packets used depends on the container size and contents.
The Advantages of Oxygen-Free Food Storage
Using oxygen absorbers provides several key advantages for preppers building up a long-term food stockpile:
- Longer shelf life - Properly stored foods can last 5-10 times longer than without oxygen absorbers
- Preserved nutrients - Anaerobic environment protects delicate vitamins and minerals
- Saves money - With less wasted food, your storage investment goes further
- Better taste - Foods retain flavor better in oxygen-free environment
- More reliable storage - Removes guesswork and uncertainty around spoilage
By using oxygen absorbers, preppers can reliably build a nutritious, long-lasting food stockpile tailored to their family's unique needs and tastes.
Diverse Types of Oxygen Absorbers and Their Uses
There are a few main types of oxygen absorbers used for food storage:
- Iron powder - Most common type, uses iron oxide reaction
- Ascorbic acid - Alternative for people sensitive to iron
- Hydrogen gas absorbers - Higher capacity for very low humidity
Iron powder oxygen absorbers are suitable for most dried food storage needs. Ascorbic acid versions work similarly but avoid potential metallic taste transfer. Hydrogen gas absorbers have a higher moisture tolerance and absorption capacity for extreme low-humidity environments.
The right oxygen absorber depends on the specifics of your food packaging, storage method, and environmental conditions. High-quality vendors provide guidance on picking the ideal ones for your particular prepping application.
What foods Cannot be stored with oxygen absorbers?
Oxygen absorbers should not be used with certain foods, as the lack of oxygen can actually cause them to spoil more quickly. Here are some key foods that should not be stored with oxygen absorbers:
Sugar and Salt
Pure sugar and salt do not require oxygen absorbers. In fact, using oxygen absorbers with them can cause the products to harden and become difficult to use. Sugar and salt naturally resist spoilage without oxygen absorbers.
Brown Rice
Brown rice contains natural oils that can go rancid if stored without oxygen present. The oils oxidize in contact with oxygen, which allows brown rice to be safely stored at room temperature. Removing the oxygen can accelerate spoilage.
Dry Pasta
Like sugar and salt, dry pasta can be stored at room temperature without oxygen absorbers. Pasta does not contain oils that can go rancid. As long as it is kept dry, pasta can be stored for 1-2 years without special storage methods.
The key is knowing which foods have natural oils or properties that require some oxygen to prevent premature spoilage. Stick to oxygen absorbers for low-moisture foods like beans, grains, dehydrated produce, and certain baked goods. And leave them out of sugar, salt, brown rice, pasta, and similar pantry staples. Following storage guidance for specific foods will ensure you get the most out of your food preps.
What is the best oxygen absorbers for food storage?
Oxygen absorbers are small packets of iron powder that absorb oxygen from the air inside sealed containers. When used properly, they can significantly extend the shelf life of dried foods by preventing oxidation and insect infestations. Here are the top oxygen absorbers for food storage:
Oxy-Sorb 100-Pack Oxygen Absorber
- Contains 100 small packets that absorb 300cc of oxygen each
- Ideal for use with medium-sized containers up to 1 gallon
- Prevents food spoilage for 1-5 years if stored properly
PackFreshUSA: 50cc Oxygen Absorber Packets
- Low-cost option for small food storage containers
- Each mini packet absorbs 50cc of air
- Works well for mason jars and mylar bags under 1 quart
Fonday Food Grade Oxygen Absorbers Packets
- Food-grade absorbers made in FDA-approved facilities
- Available in various sizes from 20cc to 2000cc
- Can extend shelf life of dried goods for up to 25 years
Where to Buy Oxygen Absorbers for Food Storage
Many emergency preparedness stores sell oxygen absorbers both online and in retail locations. Some top suppliers include:
- Emergency Essentials
- USA Emergency Supply
- The Ready Store
- Augason Farms
When selecting oxygen absorbers, be sure to choose the right size based on container volume and contents. Follow manufacturer instructions for proper usage. With the right oxygen absorbers, you can safely store dehydrated and freeze-dried foods for years.
What can I use instead of oxygen absorbers?
Vacuum sealing is an effective alternative to oxygen absorbers for extending the shelf life of stored food. Here are some key points:
-
Vacuum sealing removes oxygen and prevents air exchange between the food and environment. This inhibits oxidation and spoilage.
-
It creates an airtight barrier that also protects against moisture, odors, mold, and insects.
-
Properly vacuum sealed foods can last 3-5 times longer than with oxygen absorbers alone. Powdered milk may last up to 20 years.
-
Vacuum sealers are affordable ($30-$200) and reusable. The bags are inexpensive and reusable as well.
-
Vacuum sealing works best for low-moisture foods like grains, flour, pasta, dried fruit, nuts, coffee, etc. It's less suitable for moist foods.
-
Use high-quality vacuum sealer bags that have low oxygen permeability. Look for thick, durable bags marketed for long term food storage.
So if you want extended shelf life beyond what oxygen absorbers provide, vacuum sealing is an accessible and proven method. Combine both techniques for maximum food preservation.
How many oxygen absorbers for 5 gallon bucket of rice?
When storing grains, flours, or rice in 5 gallon buckets, you'll want to use about 2 100cc oxygen absorbers per gallon. So for a 5 gallon bucket of rice, use around 10 oxygen absorbers.
Here are some tips on getting the right amount of oxygen absorbers:
- For grains, flours, and rice, plan on using 2 absorbers per gallon
- For pasta and beans, use more - about 4 absorbers per gallon
- 100cc oxygen absorbers are standard. Use a oxygen absorber calculator to determine exactly how many you need
- Too few absorbers can lead to spoilage or insects. Too many can make the bucket hard to open
- Wrap absorbers in paper towels and place throughout the bucket - don't bunch them together
Properly storing rice and other grains with oxygen absorbers helps ensure they stay fresh and bug-free for years. Follow the guidelines above and check your buckets yearly to get the most out of your food supply. Let us know if you have any other questions!
Selecting the Best Oxygen Absorbers for Food Storage
Oxygen absorbers are an essential tool for long-term food storage. When sealed in an airtight container with your dried or dehydrated food, these small packets absorb oxygen over time, helping prevent spoilage. Choosing the right type and quantity of oxygen absorbers ensures your food stays fresh and nutritious for years to come.
Oxygen Absorbers for Food Storage Chart
Use this handy chart as a guide to select the appropriate oxygen absorber size for your container volume:
| Absorber Size | Appropriate for Container Volume |
|---|---|
| 50 cc | Up to 1 quart |
| 100 cc | 1-2 quarts |
| 300 cc | 1-2 gallons |
| 500 cc | 3-5 gallons |
| 1000 cc | 5-10 gallons |
For example, if you are storing 5 gallons of rice, you would need (2) 500 cc oxygen absorbers to remove oxygen effectively.
It's always better to slightly overestimate absorber capacity to ensure no oxygen remains.
Matching Oxygen Absorbers to Specific Food Types
Low moisture foods like grains, flour, pasta, beans require smaller oxygen absorbers since less oxygen is present. Aim for a 100-300 cc size.
High moisture foods like freeze dried fruits and vegetables contain more oxygen. Use 500-1000 cc absorbers for best results.
If unsure, default to a larger oxygen absorber size to guarantee full oxygen removal.
Proper Storage of Oxygen Absorbers Before Use
-
Store unopened oxygen absorber packets in an airtight glass jar or Mylar bag. Exposure to air activates the absorbers prematurely.
-
Use oxygen absorbers within 6 months for best results. Mark your storage container with the date.
-
Do not open oxygen absorber packets until immediately before placing in your food storage container. Any exposure to oxygen starts the absorption process.
Following proper storage and matching absorber size to container volume, oxygen absorbers effectively remove oxygen for long-term food shelf life. Test absorbers periodically with an oxygen meter.
sbb-itb-b932644
How to Use Oxygen Absorbers for Food Storage
Oxygen absorbers are an essential tool for preppers looking to store food long-term. When used properly, these small packets can significantly extend the shelf life of dried goods by removing oxygen from storage containers. This section will cover best practices for selecting containers, preparing them for use with oxygen absorbers, and strategic placement to maximize effectiveness.
Selecting Appropriate Containers for Oxygen Absorber Use
When selecting containers for use with oxygen absorbers, the most important factors are that the container is air tight and has a low oxygen permeability. Popular options include:
- Mylar bags - These metallic bags create an impermeable barrier to oxygen when sealed correctly. Mylar is one of the best choices for oxygen absorber use.
- Food grade buckets - Buckets with gasket lids provide an airtight seal. For added protection, line them with mylar bags.
- Mason jars - When used with an oxygen absorber and tight-fitting lid, mason jars are an affordable option.
Thoroughly clean and dry any containers before use to remove contaminants and moisture that could impact food quality.
Preparing Containers and Absorbers for Effective Use
Correctly activating and placing oxygen absorbers ensures they can effectively remove oxygen from storage containers. Follow these preparation steps:
- Activate absorber packets by exposing them to air for several minutes prior to placement in the container. This kickstarts the oxygen absorption process.
- Place food in storage containers in the desired quantities. Do not overfill - leave at least 20% headspace for the oxygen absorbers to work properly.
- Place the appropriate number of activated absorber packets in the container depending on volume. Follow manufacturer guidelines for ideal ratios.
- Fully seal the storage container. For mylar bags, use a hot iron to create an impermeable closure.
Strategic Placement of Oxygen Absorbers in Containers
To maximize effectiveness, arrange multiple oxygen absorber packets strategically within storage containers:
- For buckets, place one packet at the bottom, one in the middle, and another at the top to absorb oxygen evenly.
- In mylar bags, insert one small packet for every gallon of food. Distribute them evenly from top to bottom.
- For mason jars, one small absorber packet per jar is sufficient.
With the proper containers, preparation, and placement, oxygen absorbers are invaluable for food storage. When used correctly, they can keep dried goods fresh for years to come.
Creating an Airtight Environment with Mylar Bags and Oxygen Absorbers
Ensuring a Secure Seal with Mylar Bags
When sealing mylar bags for long-term food storage, it's crucial to ensure a tight, secure seal to prevent air and moisture from entering. Here are some tips:
-
Thoroughly clean the edges of the mylar bag before sealing. Remove any food debris or dust that could prevent a tight seal.
-
Use a quality bag sealer designed for mylar bags. Clamp bags tightly and seal completely across the width of the bag.
-
Visually inspect the seal and press along the edges with your fingers, looking for any gaps or weak points in the seal. Reseal if necessary.
-
Consider double sealing bags for an extra layer of protection. Seal once across the middle, then again close to the outer edges.
Techniques for Verifying the Air Tightness of Storage Containers
Before relying on any long-term food storage containers, it's wise to test them for air tightness using these methods:
-
Water submersion test: Seal the container with oxygen absorbers inside. Submerge under water and look for air bubbles escaping, which indicates leaks.
-
Pressure gauge test: Use a pressure gauge made for container testing. Seal the container with oxygen absorbers and apply pressure to specified psi level. Monitor gauge over 24-48 hours for pressure drops signaling air leaks.
-
Visual seal inspection: Thoroughly inspect container seals and press along all edges feeling for air leaks. This works for mylar bags, plastic buckets, and other sealed containers.
Addressing Potential Seal Problems for Longevity
If testing reveals container air leaks, properly addressing this is crucial for long-term food storage with oxygen absorbers:
-
Check container edges and seals for any debris, damage, or product residue that could cause seal failure. Clean thoroughly.
-
Ensure container and sealing equipment is designed for long-term food storage applications and can achieve air tight seals.
-
Try resealing the containers after cleaning/inspection. Double seal mylar bags for extra protection.
-
For severe seal damage causing persistent air leaks, replace the container with new ones designed for airtight sealing.
Following robust air tightness testing and resolving any seal issues is vital to get the full effectiveness of oxygen absorbers for maintaining food freshness and extending shelf life during long duration storage.
Maximizing Shelf Life with Oxygen Absorbers
Oxygen absorbers are an effective tool for extending the shelf life of stored foods. When used properly, they can keep foods fresh for months or even years. Here is an overview of estimated shelf lives when using oxygen absorbers with various food types:
Estimating Shelf Life for Various Foods with Oxygen Absorbers
Grains - White rice, beans, grains: 8-10 years or more
Legumes - Lentils, split peas: 8-10 years
Freeze dried foods - Meat, prepared meals: 25-30 years
Dehydrated foods - Fruits, vegetables: 1-5 years
Powdered foods - Milk, eggs, butter: 10-15 years
As you can see, integrating oxygen absorbers into food storage can dramatically extend shelf life across many food groups. Proper storage conditions are also key - cool, dark spaces help prevent spoilage.
Identifying Signs of Spoilage Despite Oxygen Absorbers
Even with oxygen absorbers, stored foods can sometimes still spoil. Watch for these signs:
- Mold growth
- "Off" odors
- Insect infestations
- Significant moisture inside containers
- Discoloration or texture changes
If you notice any of the above, it's best to discard the food for safety.
Periodic Inspection of Stored Foods for Safety
To ensure your stored foods stay fresh and safe to eat, do periodic inspections every 3-6 months. Check for signs of spoilage, moisture, and pests. Replace oxygen absorbers if needed. This will help you maximize shelf life and avoid wasting food or eating anything unsafe.
Following proper storage protocols with oxygen absorbers is key for long-term food shelf life. But occasional inspections give you an extra safeguard against spoilage.
Integrating Moisture and Oxygen Control in Bulk Food Storage
Managing moisture and oxygen levels is critical for long-term food storage. When stored properly with oxygen and moisture absorbers, foods like grains, beans, and freeze-dried meals can last for decades. Here's an overview of best practices for integrating moisture and oxygen control into a robust food storage plan.
Combining Oxygen Absorbers and Moisture Absorbers for Optimal Preservation
Using oxygen absorbers and moisture absorbers together provides an extra layer of protection against food spoilage organisms.
Oxygen absorbers remove oxygen from storage containers, preventing oxidation reactions. This slows the growth of aerobic microbes. Meanwhile, moisture absorbers soak up excess moisture, inhibiting mold growth.
For optimal results, add both an oxygen absorber pack and a moisture absorber pack when sealing mylar bags or plastic buckets. The dual-absorber approach allows for longer shelf life across a variety of food types.
Best Practices for Storing Dehydrated and Freeze-Dried Foods
Properly stored freeze-dried foods and dehydrated foods can remain edible for 20-30 years. Here are some best practices when using oxygen absorbers:
- Place oxygen absorbers in mylar bags before adding food. Absorbers need room to work.
- For #10 cans, put absorbers at the bottom before food goes in.
- Use the right absorber size - they're measured in CC's. Larger bags need more CC's.
- Seal bags and cans completely to activate absorbers. Any air gaps will degrade performance.
- Store sealed containers in a cool, dark place like a basement or cellar.
With the right moisture and oxygen controls in place, preppers can bank on freeze-dried meals and dehydrated staples being there when needed most.
Bulk Food Storage Solutions for Preppers
For large-volume dry food storage, sealed plastic buckets make ideal containers when used with oxygen absorbers. Some tips:
- 5-7 gallon buckets are manageable sizes for stacking & transport.
- Gamma lids allow easy bucket access without unsealing.
- Use mylar bag liners inside buckets to add moisture barrier.
- Appropriately sized oxygen absorbers go in the mylar bags.
- Load with grains, beans, pasta - absorbers remove O2.
- Snap lids on tight to activate the oxygen absorption.
With some planning and the right storage methods, preppers can store hundreds of pounds of foods in bulk. Just be sure to integrate both oxygen and moisture control.
Where to Buy Oxygen Absorbers for Food Storage
Trusted Suppliers and Retailers for Oxygen Absorbers
When looking to purchase oxygen absorbers for food storage, it's important to find reliable and reputable suppliers to ensure you get a quality product. Some recommended places to buy oxygen absorbers include:
-
Online retailers that specialize in preparedness and food storage supplies, such as Augason Farms, Emergency Essentials, and Wise Food Storage. These retailers often have a wide selection of oxygen absorbers specifically designed for long term food storage.
-
Major online retailers like Amazon also carry various brands of oxygen absorbers. Be sure to read reviews carefully when purchasing from Amazon.
-
Some big box stores like Walmart or hardware stores may have oxygen absorbers near canning or food storage supplies. Availability can vary by location.
-
Local health food stores or co-ops sometimes stock oxygen absorbers near other bulk dry goods. This can be a good option to see products in person.
When evaluating suppliers, check client reviews, certifications, testing, and the materials used in the oxygen absorbers. Food grade quality and consistency is essential.
Considering Cost-Effectiveness When Purchasing Oxygen Absorbers
Oxygen absorbers range in price from about $5 to $15 for a pack of 100-500 absorbers, depending on the brand and source. Consider these factors when evaluating cost:
-
Absorption capacity: The higher the cc/cubic centimeters of oxygen absorbed, the fewer absorbers you may need.
-
Quantity discounts: Buying in bulk packs can lower per unit price.
-
Reusability: Some brands claim reusable absorbers if you re-activate them in the oven.
-
Waste: Getting the right absorber size for your container is key to avoiding waste.
-
Effectiveness: Spending a little more on quality absorbers that work consistently can save money long term.
Finding the right balance of price, performance, and appropriate capacity is essential for cost-effective food storage.
Online vs In-Store Shopping for Oxygen Absorbers
Both online and in-store shopping for oxygen absorbers have pros and cons:
Online
- Wider selection of brands and bulk quantities
- Lower prices due to less overhead
- Convenience of home delivery
- Difficult to inspect product before purchasing
In Store
- Can personally inspect absorbers before buying
- Limited selection and quantities
- Often higher per unit pricing
- Need to allocate time and gas for shopping
Consider how often you may need to purchase absorbers when choosing where to shop. Infrequent bulk online ordering may make more sense over routine in-store purchases. Having a few go-to suppliers can streamline the process over time.
Conclusion
Oxygen absorbers are a critical tool for preppers looking to extend the shelf life of stored food. When properly integrated into your food storage plan, these handy packets can:
- Significantly extend the viable storage time of pantry staples like grains, flour, pasta, dried beans, nuts, and more
- Prevent spoilage by limiting oxygen exposure which leads to mold, bacteria, and other contaminants
- Save money by reducing food waste from spoiled goods and allowing bulk purchases that can be safely stored
- Improve preparedness through building durable emergency food reserves that will remain edible for years
Recap: The Importance of Oxygen Absorbers in Extending Food Shelf Life
As discussed, oxygen absorbers are vital for usable long-term food storage. By absorbing oxygen from sealed containers, they stall deterioration and keep foods fresh for 1-5+ years depending on the product. This allows preppers to stockpile a diverse pantry that will remain intact until needed in an emergency.
Final Thoughts on Achieving Long-Term Food Storage Preparedness
When building your emergency food reserves, be sure to incorporate oxygen absorbers to maximize shelf life. Carefully research storage times for specific goods, monitor your cache, and routinely cycle out aging inventory. Used properly alongside good rotation practices, oxygen absorbers help ensure your food preps will carry you through any disruption.
