Analysis of iso-α-acids in alcoholic beverage

H. Ikeda, N. Ikeda, K. Kudo, S. Kage

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


Detection of hop bittering components, iso-α-acids, in human plasma was carried out in order to prove the ingestion of beer. Three iso-α-acids, isocohumulone, isohumulone and isoadhumulone, were extracted from plasma with isooctane under acidic condition, and submitted to high-performance liquid chromatography. The components were well separated by octadecylsilica column using a mobile phase of methanol-water (77.5:22.5) containing 85% phosphoric acid (1.7g/100ml), 10% tetraethylammonium hydroxide (1g/100ml). Since isocohumulone and isohumulone were detected in beer as major components of iso- α-acids, these components were considered to be useful indicator to prove ingestion of beer.

Original languageEnglish
Pages (from-to)130-131
Number of pages2
JournalJapanese Journal of Forensic Toxicology
Issue number2
Publication statusPublished - 1999

All Science Journal Classification (ASJC) codes

  • Pathology and Forensic Medicine
  • Toxicology


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