Pelagonidin-3-glucoside degradation is slower when glucose,
sucrose or maltose is added to the fruit. Sucrose also
increases the stability of anthocyanins (Francis 1989). The
absorbance of anthocyanins, such as pelagonidin-3-
glucoside, increases when glucose, sucrose or maltose is
added (Lewis et al. 1995). Anthocyanins colour increases
upon the removal of water by displacement of the
hydration/dehydration equilibrium toward coloured species
(Brouillard 1983). This observation explains why the parameter
L (lightness) have increased and why the parameter
h (hue) have decreased during the osmotic and osmosonication
processes.