Here’s a nice little thing to know . . .
Subject: Vitamin C in Beer HBD #2388 4/1997
Just a quick empirical observation on vitamin C in beer.
I wanted to see if my beer was oxidized relative to commercial beer and so measured the ORP* of two samples. I did OK. I then stuck an aeration stone into the sample and gave it a shot of O2. Unsurprisingly the ORP went through the roof. Amused by this I dropped in a vitamin C tablet and the ORP went through the floor – well below where it was originally. I never sat down and did anything even quasi scientific about this (it’s on a long list) but the initial observation was that ascorbic acid is a pretty good reducing agent.
*ORP – Oxygen Reducing Potential
A. J. deLange
– Numquam in dubio, saepe in errore.