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  • Title: Influence of the drying process of Cascade hop and the dry-hopping technique on the chemical, aromatic and sensory quality of the beer.
    Author: Monacci E, Baris F, Bianchi A, Vezzulli F, Pettinelli S, Lambri M, Mencarelli F, Chinnici F, Sanmartin C.
    Journal: Food Chem; 2024 Dec 01; 460(Pt 2):140594. PubMed ID: 39068805.
    Abstract:
    Drying techniques are important for hop storage and quality. The stage of hop addition in beer is another important issue. This study focuses the impact of two drying techniques [freeze-dryer (F) and hot-stove (H)] of Cascade hop, on the chemical, aromatic and sensory quality of beer, comparing beers produced without (BF and BH) and with dry-hopping technique (BFDH and BHDH). Dry-hopping with H significantly increased the bitterness index and reduced the titratable acidity. Isoamyl acetate (450.60 μg/L) and ethyl caprylate (313.60 μg/L) were in high content especially in BH while, ethyl-n-caproate (359.37 μg/L) had the highest content in BF. The beers made with dry-hopping technique, had a significantly higher content in terpenes especially in BFDH (1006.18 μg/L). Sensory evaluation indicated difference preferences, with freeze-dried hop beers generally favored. In conclusion, depending on the type of beer desired, hops dried in different way and a specific hopping technique can be chosen.
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