Spectrophotometric method of IBU determination

[BuzzCraft]

Can someone point me to detailed spectrophotometric methodology for IBU determination in finished beer? I've search through the downloadable ASBC files unsuccessfully.

Thanks.

 

[AiredAle]

Buzz,

Here're are methods for UV/vis for IBU in beer, alpha and beta acids in hops, and HPLC for alpha and beta acids in hops. Can't recall where I found these on the web, or when, so don't know who to give credit to. Certanly not me. Let us know if they work for you.

View attachment AA% IBU analytical.pdf

 

[BuzzCraft]

Sweet....thanks AiredAle. Just the info I needed and it looks very doable. I'll let you know how/if it works out.