The objective of this studywas to assess the effect of novel drying techniques on the total anthocyanin content of
extracts from bilberry press cake using supercritical carbon dioxide with ethanol as co-solvent. Prior to
extraction, bilberry press cakewas dried at 40 °C and 70 °C tomoisture contents of 6% and 20% (w/w) by infrared
drying, infrared impingement drying, and microwave-assisted hot-air drying and compared to freeze drying