Coffee bean such fatty acids – 3-methyl-valeric acid (sour, green-herbaceous, unpleasant odor), acetaldehyde (pungent-nauseating odor, even when highly diluted, present in dried green coffee beans at concentrations of about 5 mg/kg), propanal (choking effect on respiratory system, penetrating-nauseating), butanal (nauseating effect, present in dried green coffee beans at 2 to 7 mg/kg), or pentanal (very repulsive nauseating effect). Coffee bean A coffee bean is a seed of the coffee plant and the source for coffee. It is the pit inside the red or purple fruit often referred to as a cherry. Just like ordinary cherries, the coffee fruit is also a so-called
Coffee reference to the drink's reputation as an appetite suppressant. It has also been proposed that the source may be the Proto-Central Semitic root q-h-h meaning "dark". Alternatively, the word Khat, a plant widely used as a stimulant in Yemen and Ethiopia before being supplanted by coffee has been suggested as a possible origin, or the Arabic word "quwwah" (meaning "strength"). It may also come from the Kingdom of Kaffa in southeast Ethiopia where Coffea arabica grows wild, but this is considered less likely; in the local Kaffa language, the coffee plant is instead called "bunno". The expression "coffee break" was