From the HBD Archive
From: att!iwtio!korz@hplabs.HP.COM
Subject: oxidation
Date: 1989-10-24 19:55:09 GMT

>From: Martin A. Lodahl <pbmoss!mal@hplabs.HP.COM>
>Subject: Trub Management

> eight-year-old asked, "why don't you just use
> your lauter tun?" My jaw dropped. Since the
> wort is already cool, oxidation is not a problem.

The reason that oxidation is not a problem is not because the
wort is cool, rather because before yeast goes into its fermentation
stage of life, it goes through a respiration stage during which it
NEEDS oxygen. Boiling drives off oxygen (and all other dissolved
gasses, for that matter) so that you need to aerate your wort before
pitching your yeast. After fermentation begins, you then need to
be careful to not introduce oxygen.

Al.



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