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 borer beetle (the insect pathogenic species in the genus "Paecilomyces" have been renamed as "Isaria"), and "Metarhizium anisopliae". Coffee borer beetle The coffee borer beetle or coffee berry borer ("Hypothenemus hampei") is a small beetle native to Africa. It is among the most harmful pests to coffee crops across the world where coffee is cultivated. Spanish common names of the insect include "barrenador del café", "gorgojo del café", and "broca del café". Females have two larval stages and males only one. They have strong mandibles, and their larval phase lasts 10 to 26 days. The adults are small black beetles. Females are