A. Chamel et al., DEMONSTRATION USING FTIR SPECTROSCOPY OF THE EFFECT OF A GAMMA-IRRADIATION ON THE FORMATION OF THE CHERRY TOMATO FRUIT CUTICLE, Comptes rendus de l'Academie des sciences. Serie 3, Sciences de la vie, 317(4), 1994, pp. 346-350
The effects of a gamma irradiation of mature-green cherry tomato fruit
s, on cuticle formation and composition during the ripening process, w
ere investigated using isolated cuticles. The production of wax and cu
tin (in mg/cm2) in control fruits increased during the considered peri
od (18 days). Cuticles isolated 18 days after the irradiation had abou
t the same wax content, on a surface basis, as control cuticles but a
much lower cutin content. Analysis of cuticles using FTIR spectroscopy
has allowed to differentiate cuticles from control and irradiated fru
its. Major changes were revealed during cuticle development of control
fruits. Two absorption bands appeared at 1 603 and 834 cm-1 which may
be ascribed to phenolic compounds. Conversely, cuticles isolated from
irradiated fruits exhibited unchanged spectra. These results indicate
that polymer components biosynthesis is severely affected by gamma ir
radiation. A