Dimethyl Sulfides (DMS)

I came across pages that mentioned Dimethyl Sulfides (DMS) while considering my first homebrew recipe that would incorporate a whirlpool hop stand after the boil. I’m putting together what I’m finding for future reference…

First, the useful pages that I’m finding…

BYO – Wort Boiling: Homebrew Science
http://byo.com/malt/item/1650-wort-boiling-homebrew-science

Beersmith – Dimethyl Sulfides (DMS) in Home Brewed Beer
http://beersmith.com/blog/2012/04/10/dimethyl-sulfides-dms-in-home-brewed-beer/

 

What I’m finding as relevant points to consider…

  1. SMM, or s-methyl-methionine, is created from amino acids during the malting process.
  2. DMS is a byproduct of heating SMM.
  3. DMS is volatized and evaporated off during the boil, with a half-life of 40 minutes.
  4. A 60 minute boil will remove 64.7% of the DMS and a 90 minute boil will remove 79%.

 

Still putting my notes together, will come back soon to polish up this page…

 

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