measuring essential oils on the farm - bsg humulus u 2014
Post on 16-Apr-2017
308 Views
Preview:
TRANSCRIPT
LUPULIN GLANDS
• Resins (3 – 18%)Alpha and Beta AcidsBittering
• Essential Oils (0.5 – 3%)Aroma and Flavor“hop oil”
HOP OIL COMPOSITION
3 primary chemical categories(1)• Terpenes• 50 -80%• Terpenoids• 20 – 50% • Sulfur Componds• < 1%(1) Schönberger & Kostelecky 2011
SULFUR COMPOUNDS“It is slowly becoming evident that the importance of volatile sulfur components from hops is highly underated!”Barth-Haas “Hop Science Newsletter” February 28, 2013
Geranyl Isobutyrate
Geranyl Isobutyrate CAS: 2345-26-8Odor: Sweet, floral, fruity green peach apricot roseFlavor: Sweet, floral and citrus with fruity nuances
Hop Yard G 51 50Black trace: 9/5/2014Blue trace: 9/10/2014
Hop Yard G 52 55Blue Trace: 8/28/2014Red Trace: 9/5/2014Black Trace: 9/16/2014Rentention Time 8.6 – 13.3 minutes
Hop Yard G 52 55Blue Trace: 8/28/2014Red Trace: 9/5/2014Black Trace: 9/16/2014Rentention Time 14 – 17 minutes
Where do we go form here?Build in sulfur data to our maturity models.Continue to gather sensory information from brewers to include it with the GCMS and SCD data.Look at the contributions of glycosides and Cysteine adducts that may add shelf life to hoppy beers.
top related