Abstract:
Beer is the world’s most widely consumed and probably the oldest alcoholic beverage
made from hops with other raw material fermentation. The research project was
production of beer by Rhamnus prinoides Gesho were purchased commercially and
collected from Weyena kebeles (Janamora woreda, North Gondar administrative zone),
Tekel dengay, (Armacheho woreda, Central Gondar administrative zone), Debretabor
Megendy Giworgis kebele (Farta woreda, South Gondar administrative zone) and Kuke
Yeleshe kebele (Debre-Berhan, Woreda), Yebakela kebele (Gozamen woreda, East
Gojam administative zone) in Ethiopia. The samples were extracted by ethanol and
concentrated by rota vapor also analysed by Uv-Vis spectrophotometrer. Rhamnus
prinoides hops bitterness of DB 23.51-27.91, DT 26.31-29.13, TD 20.23-23.8, JM 17.50-
19.83, Gojame 18.33-21.81 and standards of Germaney 28.84-32.18 bitterness unit were
determined. Extract of Debre Tabor and Debre Birhan had the greatest potential as
substitute for imported hops With selected processes variables of temperature= 134℃,
time=15min and pH=5.2 due to its high bitter taste effect, beers were produced on the
pilots scale and the concerned body shall build and improve the Ethiopian national hops
industries
