From the HBD Archive
From: a.e.mossberg <aem@ibiza>
Subject: Re: UV effect on beers?
Date: 1989-01-27 17:09:47 GMT

|From: hplabs!uiucdcs!iwtsf!korz (Algis R Korzonas +1 312 979 8583)
|Subject: bottle color

|I believe that it's UV that causes anything to oxidize
|faster. I felt more safe using brown bottles because
|brown seems to be further away from the violet end of
|the spectrum than green and because the brown bottles
|are darker. On the other hand, doesn't UV have a hard
|time getting through regular glass and UV lights are
|made of quartz (or something like that)?

I think it's not UV, because as you said even clear glass
doesn't really pass UV. I'm not sure what the wavelength actually
is that causes the effect (photoreactive?), but it intuitively
must be in the yellow or yellow-green range.

|Am I fostering a valid concern or is the difference
|so small as to be negligible?

Concern about "light-struck" beers is quite valid, unless you
like skunky beers ala Heineken.

a.e.mossberg MIAVAX::AEM (Span) aem@umiami.BITNET (soon)
Masturbation is makes a cloudy day sunny. - Debbie Harry

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