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Cider Digest #1491
Subject: Cider Digest #1491, 20 March 2009
From: cider-request@talisman.com
Cider Digest #1491 20 March 2009
Forum for Discussion of Cider Issues
Dick Dunn, Digest Janitor
Contents:
Re: Juice extraction from cider apples (Claude Jolicoeur)
Diaper aroma (Andrew Lea)
RE:Baby Diapers & Fermaid (Shawn Carney)
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Subject: Re: Juice extraction from cider apples
From: Claude Jolicoeur <cjoli@gmc.ulaval.ca>
Date: Mon, 16 Mar 2009 00:42:19 -0400
In Cider Digest #1490, 15 March 2009
>Subject: Juice extraction from cider apples
>From: david.pickering@dpi.nsw.gov.au
>Date: Wed, 11 Mar 2009 09:03:45 +1100
>
>Can anyone help me with information about juice extraction from apple
>pulp.
>I'm asking this jointly on the UK and US email discussion groups
>There have been various comments in times past about efficiency of
>pressing with various presses but my question relates to the composition
>of juice that is extracted at various stages.
David,
From my experience, the first and the last glass from a press run have the
same sugar content and acidity. However, they differ in taste, mouth feel
and consistence. The last glass is usually clearer. There surely are some
differences in composition, but I guess a complete chemical analysis would
be required to assess it.
Claude
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Subject: Diaper aroma
From: Andrew Lea <andrew@HarpHill.co.uk>
Date: Mon, 16 Mar 2009 11:00:49 +0000
Mark wrote:
>
> Hi All...
> Only recently I've begun using FermAid as a nutrient in my
> cyder's. (I formerly used straight MAP)
> Since I've begun using it, I've gotten two batches that have the
> classic "baby diapers" aroma/flavor.
If you mean a kind of fecal / dog mess aroma, then this can be due to
indole production by yeast. Not absolutely clear why this happens, but
it's associated with tryptophan metabolism and it's quite common in
high-gravity low-juice fermentations. The fix is to add a little Vitamin
B6 (pyridoxine) before fermentation - around 1 ppm.
Maybe worth a try?
Andrew Lea
Wittenham Hill Cider Pages
www.cider.org.uk
------------------------------
Subject: RE:Baby Diapers & Fermaid
From: Shawn Carney <shawn@blossomwoodcidery.com>
Date: Tue, 17 Mar 2009 17:44:16 -0400
Mark, it depends on whether you are talking "dirty" or "clean" diapers.
Dirty diapers would probably come from mercaptans which are usually a
product of H2S reacting with alcohol. Clean diapers(or band-aid) could
be Brettanomyces.
Was there a fart in the diaper before the poop? Did you notice any H2S
(hydrogen sulfide - rotten egg smell)? Is the cider still fermenting?
Shawn
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End of Cider Digest #1491
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