Alpha Acid loss in whole hops? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Recipes/Ingredients > Alpha Acid loss in whole hops?

Thread Tools
Old 03-28-2006, 07:04 PM   #1
cweston's Avatar
Feb 2006
Manhattan, KS
Posts: 2,014
Liked 18 Times on 11 Posts

I recently got a "pound" of whole Columbus hops from HopsDirect.

As quickly as possible, I put 1 oz portions in ziplocks, squeezed every possible bit of air out, put them all in a jumbo ziplock, squeezed every possible bit of air out of that, and put it into the deep freeze (which we keep on the coldest setting).

I know that one always loses some AA to oxidation with whole hops. Anyone have a reasonable estimate of what percentage that loss is? This batch was labelled 16% AA (!!!).

I know it's kindof anal, but I'd like to have a decent guess what the actual AA is for computing IBUs.

Primary: none
Bottle conditioning: Robust Porter
Drinking: Saison Dupont clone, tripel
Coming soon: Columbus APA, Rich Red ale

Reply With Quote
Old 03-28-2006, 07:07 PM   #2
Baron von BeeGee
Beer Bully
Baron von BeeGee's Avatar
Jul 2005
Barony of Fuquay-Varina, NC
Posts: 5,397
Liked 23 Times on 22 Posts

I know ProMash and BeerSmith both estimate hop degradation after you input storage temperature and time (actually, I think they give a degradation chart with months on one axis). However, I don't know the actual formula. I think your storage technique is quite sound.

Reply With Quote
Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Alpha Acid Testing abstonhops Hops Growing 4 05-08-2010 04:57 PM
subbing hops: target hops (high alpha) for something normal alpha jigidyjim Beginners Beer Brewing Forum 2 09-27-2009 07:44 AM
Hops Alpha Acid Percentages Champurrado General Techniques 3 06-13-2009 12:27 PM
Alpha acid factors ursus Hops Growing 1 03-09-2009 11:55 PM
HELP! Alpha Acid question kaotic General Beer Discussion 13 09-09-2007 11:08 PM

Forum Jump