Resumen
Increase of endogenous trans-resveratrol content in grapes by resonant radiation with lasers or other optical sources. The wavelength of irradiation is the maximum absorption for trans-resveratrol so that the effect of ultraviolet (uv) irradiation on the skin of the grape is maximized, achieving a greater induction of the compound. The trans-resveratrol is a molecule produced naturally by the vine and other plants as a defense mechanism against fungal infections, various types of stress, chemicals, etc. The application of the treatment, characterized in that the grapes are subjected for short periods of time (less than 45 minutes) to laser radiation or other optical sources, of 302.1 nm, resonant wavelength of trans-resveratrol, allows to increase importantly, the endogenous trans-resveratrol content in the grape, with the consequent improvement of its natural resistance to putrefaction and aging during storage and, on the other hand, the improvement of its nutritional and health-promoting properties. (Machine-translation by Google Translate, not legally binding)