Anthocyanins were reported to be unstable at high temperatures
during processing or storage (Patras et al., 2011). Loss of anthocyanins
was probably due to oxidation as well as condensation of anthocyanin
pigments with phenolic compounds (Castaňeda-Ovando, De
Pacheco-Hernández, De Páez-Hernández, Rodríguez & Galán-Vidal,
2009).