Abstract：
:Hop-derived iso-α-acid (IAA) ingredient congeners are specific to beer. Concentrations of IAAs were determined in blood of five volunteers over 6 h following the consumption of small volumes of beer containing relatively high (Pale Ale beer) or low (wheat beer) concentrations of IAAs. IAAs were quickly absorbed with peak trans-IAA concentrations at 0.5 h followed by a drop of generally 10-fold at 2 h and low or not detectable trans-IAA levels at 6 h. However, the qualitative monitoring showed that the cis-IAAs were detected at all time-points. Preliminary pharmacokinetics of these compounds in humans shows relatively small interindividual differences and an estimated short half-life of ∼30 min. Comparison of 0.5 and 2 h blood specimens demonstrated that the trans isomers were eliminated faster than the cis counterparts. Preliminary urine analysis showed only unmodified 'co' analytes detectable throughout the 6 h. In authentic forensic casework where typically large amounts of conventionally hopped beer are consumed, this approach may provide a novel method to target ingredient congeners consistent with beer ingestion.
journal_name
J Anal Toxicoljournal_title
Journal of analytical toxicologyauthors
Rodda LN,Gerostamoulos D,Drummer OHdoi
10.1093/jat/bku038subject
Has Abstractpub_date
2014-07-01 00:00:00pages
354-9issue
6eissn
0146-4760issn
1945-2403pii
bku038journal_volume
38pub_type
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