NOTE Fast High-Performance Liquid Chromatography Analysis of Hop Bitter Compounds: Correction and Addendum. M. Verzele, C. Dewaele, and M. Van Kerrebroeck, Laboratory of Organic Chemistry State University of Ghent, Krijgslaan, 281 (S.4), B-9000, Ghent, Belgium; and J. Strating and L. Verhagen, Heineken Technisch Beheer, Zoeterwoude, The Netherlands. J. Am. Soc. Brew. Chem. 42:0094, 1984.

Problems in developing a suitable high-performance liquid chromatographic analysis method for α-acids in hop and in hops extract are discussed. The three problems are in selecting an internal standard, selecting for a reference compound, and determining a chromatographic packing material.

Keywords: α-Acids, Column packing material, High-performance liquid chromatography, Humulone, Internal standard, Reference compound