title: Determination of stilbenes in hop pellets from different cultivars.
abstract: About 30% of the polyphenols in wort and beer derive from hop, but little is yet known about their nutritional impact. The recent discovery of trans-resveratrol and piceid isomers in hop opens new doors to understanding beer health benefits. In the present work, resveratrol was quantified by HPLC-APCI-MS/MS in pellets from 9 different cultivars. Concentrations ranging from 4 to 9 mg/kg trans-piceid, from 2 to 6 mg/kg cis-piceid, and up to 1 mg/kg trans-resveratrol were detected. As previously shown for total polyphenols and flavonoids, the lower the alpha-acid content, the higher the total stilbene content.
authors.affiliation: Unité de Brasserie et des Industries Alimentaires, Faculté d'Ingénierie biologique, agronomique et environnementale, Université catholique de Louvain, Croix du Sud, 2 bte 7, B-1348 Louvain-la-Neuve, Belgium.
authors.forename: Vesna
authors.initials: V
authors.lastname: Jerkovic
authors.forename: Delphine
authors.initials: D
authors.lastname: Callemien
authors.forename: Sonia
authors.initials: S
authors.lastname: Collin
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000032:analysis; D005960:Glucosides / Q000032:analysis; D027582:Humulus / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D059808:Polyphenols; D000077185:Resveratrol; D013045:Species Specificity; D013267:Stilbenes / Q000032:analysis*
chemical_list: D005419:Flavonoids; D005960:Glucosides; D010636:Phenols; D059808:Polyphenols; D013267:Stilbenes; D000077185:Resveratrol; C058229:polydatin