Aromatic Variability in Fresh, Dried, and Pelletized Humulus lupulus L. Inflorescences Hops (Humulus lupulus L.) is a perennial herbaceous plant, and its female inflorescences are the essential ingredient for imparting aroma and bitterness to beer. This study involved 6 hop cultivars: Chinook, Cascade, Calicross, Comet, Target, and Yeoman. The respective hop cones were analyzed using HS-SPME-GC, first when fresh, then after drying, and finally transformed into pellets. The profiles of volatile components emitted of each sample were extracted and determined. The statistical techniques used allowed for the identification of aromatic variability among the different hop varieties. Furthermore, they highlighted any differences or modifications in the quantities of aromatic molecules in the three treatments of inflorescences: fresh, dried, and pelletized.
Il luppolo (Humulus lupulus L.) è una pianta erbacea perenne, le cui infiorescenze femminili rappresentano l'ingrediente fondamentale per conferire aroma ed amaro alla birra. In questo studio, sono state coinvolte sei cultivar di luppolo: Chinook, Cascade, Calicross, Comet, Target e Yeoman. I rispettivi coni di luppolo sono stati analizzati prima freschi, poi essiccati e infine trasformati in pellet tramite HS-SPME-GC. Sono stati estratti e determinati i profili delle componenti volatili presenti in ciascun campione. Le tecniche statistiche utilizzate hanno permesso di identificare la presenza di variabilità aromatica tra le diverse varietà di luppolo. Inoltre, hanno evidenziato eventuali differenze o modifiche nelle quantità delle molecole aromatiche nei tre trattamenti delle infiorescenze: fresche, essiccate e in pellet.
Variabilità aromatica nelle infiorescenze di Humulus lupulus L. fresche, essiccate e in pellet
ROSSO, LAURA
2022/2023
Abstract
Aromatic Variability in Fresh, Dried, and Pelletized Humulus lupulus L. Inflorescences Hops (Humulus lupulus L.) is a perennial herbaceous plant, and its female inflorescences are the essential ingredient for imparting aroma and bitterness to beer. This study involved 6 hop cultivars: Chinook, Cascade, Calicross, Comet, Target, and Yeoman. The respective hop cones were analyzed using HS-SPME-GC, first when fresh, then after drying, and finally transformed into pellets. The profiles of volatile components emitted of each sample were extracted and determined. The statistical techniques used allowed for the identification of aromatic variability among the different hop varieties. Furthermore, they highlighted any differences or modifications in the quantities of aromatic molecules in the three treatments of inflorescences: fresh, dried, and pelletized.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/54069