 Buckwheat contains 0.4 to 0.6 mg/g of fagopyrins (at least 6 similar substances)
The fagopyrins have been reported as being located almost exclusively in the cotyledons of the buckwheat herb.Salicylaldehyde (2-hydroxybenzaldehyde) was identified as a characteristic component of buckwheat aroma.2,5-dimethyl-4-hydroxy-3(2H)-furanone, (E,E)-2,4-decadienal, phenylacetaldehyde, 2-methoxy-4-vinylphenol, (E)-2-nonenal, decanal and hexanal also contribute to its aroma.