Could H2S produced in wine be influenced by the source of added sulphur?

pensador · « **on:** 29/06/2020 21:02:54 »

Wine making involves the addition of sulphates to kill of harmful bacteria and preserve the wine.

On occasion H2S can be produced in the wine due to badly nourished yeast.

SO2 added to wine comes in liquid solution H2SO3, and as Potassium metabisulphate K2S2O5. These react with the wine producing SO2.

Could H2S produced in wine making be in any way influenced by the source of SO2 in the wine?

Bored chemist · « **Reply #1 on:** 29/06/2020 21:19:44 »

They add sulphites to wine, not sulphates.

Quote from: pensador on 29/06/2020 21:02:54

Could H2S produced in wine making be in any way influenced by the source of SO2 in the wine?

Not as such, but the production of H2S might be influenced by the pH of the wine, and that would be (slightly) influenced by the source of SO2.
I can't see it making much difference.

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Could H2S produced in wine be influenced by the source of added sulphur?

pensador (OP)

Could H2S produced in wine be influenced by the source of added sulphur?

Bored chemist

Re: Could H2S produced in wine be influenced by the source of added sulphur?

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