Vitis vinifera Red Globe grape: In natura investigations on skin pigmentation using phase-resolved photoacoustic and TDDFT methods.

In this work we aimed to investigate the source of the Red Globe grape skin pigmentation. To achieve this goal, we used the phase-resolved photoacoustic technique to investigate the sample in natura and to access the phase-dependent absorbing entities. In addition, we used the time-dependent density functional theory (TDDFT) to contrast with our experimental spectroscopic results.