Carotenoids and flavonoids identification in Brazilian tropical fruits and vegetables using photoacoustic technique

In this work we present results of the application of PAS technique in the UV-Vis region in a variety of organic materials in natural form such as plant leaves, fruits and vegetables. The observed PAS spectra were associated to the presence of several carotenoids and flavonoids molecules in leaves, fruits and vegetables. Our results confirm PAS as a rapid direct and efficient analytical method in material science, particularly in the very promising field of photochemistry and photobiology.