Which of the following would you identify as ideal conditions for α-acid isomerisation?
Slightly alkaline, pH 6
Alkaline, pH 9
The presence of Ca2+ ions
The presence of K+ ions
65 min boil at 100°C + agitation
The essential oils can be divided into which classes
Hydrocarbons
Oxygenated
Sulfur
Deterioration
Which are the main principal solvents used to completely dissolve and extract hop oils and resins
Hexane
Ethanol
Liquid CO2
Supercritical CO2
Only when the factor of 57 is used can the unit of measurement be called IBU (International Bitterness Unit)
true
false
Iso Extracts post fermentation's utilization is higher than Isomerized kettle extract (IKE)
true
false
Factors affect Utilization
Boil Time
Boil Temperature
Wort pH
Hop dosing rate
Wort gravity
Hop utilisation is greatest in lower gravity worts
true
false
Warm conditions over 25 °C must be avoided for hop storage
true
false
Open packaging must be closed to avoid light ingress and used
Within 7 days if stored cold at <10°C
Within 14 days if stored at <0°C
Within 1 months if stored in a freezer at -18°C