Increasing the heating temperatures disturbs this equilibrium and induces the formation of colorless chalcones, which is accompanied by decreasing the contents of the quinoid bases and flavylium cations. During long-termexposure to increased temperatures,
the resultant chalcones are easily transformed into color (brownish) polymers, which results in the browning of strawberry products during processing and storage (Odriozola-Serrano et al., 2008; Özkan, 2002).