The presence of other fluorescent aromatic acids, namely, caffeic, ferulic and sinapic acids in leaf hydrolysates has recently been reported.doi:10.1038/182733a0GRIFFITHSL. ANature Publishing Group UKNatureGriffiths LA (1958) Occurrence of gentisic acid in plant tissues. Nature 182:733–734...
Physiological Functions of Flavonoids and Phenolic Acids from Oregano Species Flavonoids and phenolic acids are accumulated in plant tissues (such as leaves, flowers, stems and roots) as a response to biotic and abiotic stress like pathogen and insect attack, UV radiation and wounding [13,47]. ...
Many derivatives of gentisic acid are found naturally, such as 5-O-(1-carboxyethenyl) in aster (Aster indicus), 5-methylether in cowslip (Primula veris), 2-O-[β-D-glucopyranosyl-(1→3)-3- hydroxybenzoyl] in marsh felwort (Lomatogonium rotatum), 5-O-[4-hydroxy-3,5-di...