Sodium metabisulfate made my wine green - Home Brew Forums

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Old 10-24-2011, 05:24 PM   #1
Sboutot
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Feb 2011
Fayetteville, Nc
Posts: 10


So I just mashed up about 25 lbs of muscadine grapes added 6 gallons of water and when I added the sodium metabisulfate (campden tablets) it changed from a pink/red color to a grey greenish color.
Anybody have any input on this?

 
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Old 10-24-2011, 05:47 PM   #2
BryanThompson
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Jan 2010
Louisville, KY
Posts: 334
Liked 40 Times on 20 Posts


That's weird. I had a glass of red grape wine and added some metabisulfate to it and the wine turned clear immediately.

 
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Old 10-24-2011, 07:54 PM   #3
gregbathurst
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Apr 2009
Australia
Posts: 1,007
Liked 56 Times on 53 Posts


Metabisulfite (so2) binds to the pigments in wine so tends to strip colour. The process is reversable so the colour will come back later in the process.
This is why so2 doesn't work as well with red wines, works much better with white.

 
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Old 10-25-2011, 08:50 AM   #4
Dicky
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Sep 2011
Nottingham
Posts: 229

Tha would explain why my elder wine went a lighter colour when I added campden. It's fine now though - a really rich deep purple.

 
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