Are oxygen absorbers necessary?

Food, Nutrition and Agriculture
Rebel Prepping
Posts: 13
Joined: Sat Jan 20, 2018 10:17 pm

Are oxygen absorbers necessary?

Post by Rebel Prepping » Sun May 06, 2018 4:28 pm

Trying to experiment with home made MRE's at low cost but oxygen absorbers are pushing the price up. From what i've seen people always use oxygen absorbers in mylar bags. However having looked into the history of food storage it doesn't seem like oxygen absorbers actually make a big difference. If you squeeze all the air out by hand and have an air tight seal it shouldn't affect the longevity. I was just wondering if anyone has stored food without oxygen absorbers in mylar bags and had positive results. thank you.

User avatar
Deeps
Posts: 5110
Joined: Sun Nov 09, 2014 8:36 pm

Re: Are oxygen absorbers necessary?

Post by Deeps » Sun May 06, 2018 4:41 pm

Not mylar but I vacc seal dehydrated meals in the plastic ones. I 'armour' the bag by putting the contents in smaller open bags within the vacc sealed bag. Probably the longest I've had is about 18 months and it was fine.

User avatar
itsybitsy
Posts: 6443
Joined: Sat Nov 27, 2010 5:51 pm
Location: East Yorkshire

Re: Are oxygen absorbers necessary?

Post by itsybitsy » Sun May 06, 2018 5:49 pm

I always use them when I store food in mylar and in my opinion they definitively do a good job os sucking any residual air from the bag.
Area 10 coordinator

User avatar
Brambles
Posts: 3092
Joined: Sat Oct 08, 2011 8:09 am
Location: West Midlands

Re: Are oxygen absorbers necessary?

Post by Brambles » Sun May 06, 2018 6:52 pm

I think it all depends how long you want the contents of your MRE's to last. For long term food storage it's advisable to remove the oxygen by either displacement, exclusion or absorption.
This paper gives all the info you are likely to need and best practices.

http://www.terrapsych.com/Prudent%20foo ... %20FAQ.pdf
Life isn't about waiting for the storm to pass, it's about learning to dance in the rain~anon

User avatar
ukpreppergrrl
Posts: 508
Joined: Tue Aug 12, 2014 9:03 am
Location: London

Re: Are oxygen absorbers necessary?

Post by ukpreppergrrl » Mon May 07, 2018 9:09 am

Mylar has the advantage of opacity but if you're keeping these things inside a box or other opaque container that is less of a requirement. I've had varying results with oxygen absorbers - I guess it depends on their state when you get them: some of them remove the oxygen, others don't. The problem with that is when they don't you have to open up the bag, add another and seal the bag again. So I go along with Deeps' policy now: I store in vacuum sealed plastic and then in an opaque box. Or I store in Mason style jars and use a break bleeder and Foodsaver Jar adapter to remove the air.
Blog: http://ukpreppergrrl.wordpress.com
التَكْرَارُ يُعَلِّمُ الحِمارَ "Repetition teaches the donkey" Arabic proverb
"A year from now you may wish you had started today" Karen Lamb

User avatar
itsybitsy
Posts: 6443
Joined: Sat Nov 27, 2010 5:51 pm
Location: East Yorkshire

Re: Are oxygen absorbers necessary?

Post by itsybitsy » Tue May 08, 2018 12:14 pm

ukpreppergrrl wrote:Mylar has the advantage of opacity but if you're keeping these things inside a box or other opaque container that is less of a requirement. I've had varying results with oxygen absorbers - I guess it depends on their state when you get them: some of them remove the oxygen, others don't. The problem with that is when they don't you have to open up the bag, add another and seal the bag again. So I go along with Deeps' policy now: I store in vacuum sealed plastic and then in an opaque box. Or I store in Mason style jars and use a break bleeder and Foodsaver Jar adapter to remove the air.
I prefer take a belt and braces approach. So I leave my product in its packaging, but prick the packaging a few times, then I put it in the mylar bags, with oxygen absorbers. I then store those in a plastic tote box. There's no one *right* way, it's all down to personal preference.
Area 10 coordinator

Post
Posts: 8
Joined: Sat Jul 28, 2018 12:02 pm

Re: Are oxygen absorbers necessary?

Post by Post » Thu Aug 02, 2018 11:38 am

I’ve got a question, if you are prepping rice/flour/pasta etc. Do the oxygen absorbers go in the bag with the food or in the container separate from the food?

User avatar
ukpreppergrrl
Posts: 508
Joined: Tue Aug 12, 2014 9:03 am
Location: London

Re: Are oxygen absorbers necessary?

Post by ukpreppergrrl » Fri Aug 03, 2018 8:41 am

If the food is in a sealed bag they go in with the food. You need to remove the oxygen around the food itself. If the food is in a bag that has been pricked as itsy says then it doesn't matter: the holes in the packaging around the food allow the oxygen to be absorbed. But generally the less oxygen there is to absorb the better the absorbers work. So pricking a bag and putting it into a large container with an absorber in the container isn't as effective as opening the bag, putting the absorber in the bag and then resealing the bag
Blog: http://ukpreppergrrl.wordpress.com
التَكْرَارُ يُعَلِّمُ الحِمارَ "Repetition teaches the donkey" Arabic proverb
"A year from now you may wish you had started today" Karen Lamb

Stonecarver
Posts: 195
Joined: Tue Aug 15, 2017 4:32 pm
Location: Eastern Scotland

Re: Are oxygen absorbers necessary?

Post by Stonecarver » Wed Aug 08, 2018 7:05 pm

With the dry goods ie rice lentils I use my vacuum sealer with my mylar bags to suck air out from then. Add a oxygen absorber for extra safety
One sure sign of the decline of a civilisation is the inability to reproduce the technological achievments of its past

User avatar
hobo
Posts: 2083
Joined: Sun Nov 28, 2010 4:27 pm
Location: Beside the seaside, North Yorkshire
Contact:

Re: Are oxygen absorbers necessary?

Post by hobo » Wed Aug 08, 2018 10:30 pm

Stonecarver wrote:
Wed Aug 08, 2018 7:05 pm
With the dry goods ie rice lentils I use my vacuum sealer with my mylar bags to suck air out from then. Add a oxygen absorber for extra safety
Ooh, I was wondering if I could use my Mylar bags that way. Thanks!

Post Reply