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co2 gas flush / infusion in order to lengthen shelf life?
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Discussions > Coffee > General > co2 gas flush /...  
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MerleApAmber
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Posted Tue Apr 9, 2013, 12:01pm
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

</ says, tongue in cheek: "Well, I guess it's time (once again) to see if pyramid energy will have any impact on use-life."
</sighs good-naturedly and giggles
Excellent piece of observation toward developing shelf life for roasted coffee. Thanks Guys!
-Chris
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Netphilosopher
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Posted Tue Apr 9, 2013, 2:29pm
Subject: .
 

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Netphilosopher
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Posted Tue Apr 9, 2013, 2:37pm
Subject: .
 

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jpender
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jpender
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Posted Tue Apr 9, 2013, 3:08pm
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

Netphilosopher Said:

A different use-life?  Hmmm....

Upon further reflection, I think that might be an excellent experiment.  Mayhaps I shall pick up some potato chips and then another bag upon the expiration date of the first one. Open both, sample them once a day and store them the same way, and see.

Posted April 9, 2013 link

Another experiment, LOL.

One would think there should be some difference, particularly as the chips near the end of their true shelf life (not necessarily what is printed on the bag). But what I was getting at was that potato chips might not be a good analogy for coffee. You suggested that coffee declines more or less at a constant rate, with a "mild slope". If this were true you would be able to find cans of Illy that last twice as long as others when opened.
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jpender
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jpender
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Posted Tue Apr 9, 2013, 3:11pm
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

Is anybody here an SCAA member?

There was a literature review published by the SCAA on coffee shelf life and staling a couple of months ago.

Click Here (www.scaa.org)
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MerleApAmber
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Joined: 13 Nov 2012
Posts: 203
Location: Atlanta
Expertise: I love coffee

Espresso: Breville BES900
Grinder: Baratza Preciso + Esatto
Vac Pot: Yuma
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Roaster: Hot Top 2K P
Posted Tue Apr 9, 2013, 4:17pm
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

jpender Said:

Is anybody here an SCAA member?

Posted April 9, 2013 link

SCAA doesn't have an 'old fogies' membership where has been's like me can afford a reoccurring annual membership with browsing rights to the archival and current trends proprietary market data.
B'sides,  :) I'd rather buy some couple tens of pounds of nice greens to roast and taste...
so... it's all good...

(hey, but, if anyone with SCAA thinks that's a good idea - Let me know!)
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CheapBastid
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Posted Tue Apr 9, 2013, 9:44pm
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

Netphilosopher Said:

That middle stable stage is what people want to extend, but I think that if you have something that's been well-stored, but say reached 70% of life on the shelf, then open it, the life-slope changes from 65 percentage points of life per 9 months to 65 percentage points per 15 days.  Since you really have only 15 percentage points to go before staling (85% minus 70%), you have only 3 1/2 days before the looming staling cliff (15%/65% * 15 days use-life).  Freeze-storing may double this time to a week or more.

Posted April 9, 2013 link

So, what is a simple recommendation to extending the life of good beans for a hobbyist like myself.

My specific situation is that I buy the freshest roasted beans from my local Intelligensia on $2 Tuesday (usually roasted the day before).  I take them home and divide the 12oz bag into four portions and foodsaver seal them in half pint mason jars.  I freeze three and use one.  I don't make much coffee so I go through a jar a week.

Is it worth all this complexity from an 'extending the life of the beans' perspective, or am I fooling myself?
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Netphilosopher
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Posted Wed Apr 10, 2013, 7:53am
Subject: .
 

.

Netphilosopher: small_x_dark.gif
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CheapBastid
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Posted Wed Apr 10, 2013, 8:29am
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

Netphilosopher Said:

If I recall, the foodsaver wasn't quite as good as a mityvac (we hooked the mityvac to a container with my older foodsaver on a second nozzle).  A new mityvac can do about 25"Hg, and the foodsaver was about an inch less or so.  Call it 23.5"

Posted April 10, 2013 link

Well, as I am my handle, I got the hand-held FreshSaver model.

=)

I'm guessing that is significantly worse than the full model FoodSaver. So it sounds like the meaningful 'upgrades' for me are getting a better extractor, and using a 'bag system' instead of the jars.

My concerns were in the reports that the bags did not hold a seal very well.  As I'm planning on discarding my Freshsaver solution, any recommendations on which 'wife friendly' vacuum upgrade device?  Also which reusable bags are more reliable from a seal perspective?
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jpender
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jpender
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Posted Wed Apr 10, 2013, 11:36am
Subject: Re: co2 gas flush / infusion in order to lengthen shelf life?
 

Why would a bag be better than a jar (assuming the jar is filled)?
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