title: Characterisation of Aronia powders obtained by different drying processes.
abstract: Nowadays, food industry is facing challenges connected with the preservation of the highest possible quality of fruit products obtained after processing. Attention has been drawn to Aronia fruits due to numerous health promoting properties of their products. However, processing of Aronia, like other berries, leads to difficulties that stem from the preparation process, as well as changes in the composition of bioactive compounds. Consequently, in this study, Aronia commercial juice was subjected to different drying techniques: spray drying, freeze drying and vacuum drying with the temperature range of 40-80 °C. All powders obtained had a high content of total polyphenols. Powders gained by spray drying had the highest values which corresponded to a high content of total flavonoids, total monomeric anthocyanins, cyaniding-3-glucoside and total proanthocyanidins. Analysis of the results exhibited a correlation between selected bioactive compounds and their antioxidant capacity. In conclusion, drying techniques have an impact on selected quality parameters, and different drying techniques cause changes in the content of bioactives analysed. Spray drying can be recommended for preservation of bioactives in Aronia products. Powder quality depends mainly on the process applied and parameters chosen. Therefore, Aronia powders production should be adapted to the requirements and design of the final product.
authors.affiliation: Institute of Animal Reproduction and Food Research of the Polish Academy of Sciences, Division of Food Science, Tuwima 10, 10-748 Olsztyn, Poland. a.horszwald@pan.olsztyn.pl
authors.forename: Anna
authors.initials: A
authors.lastname: Horszwald
authors.forename: Heritier
authors.initials: H
authors.lastname: Julien
authors.forename: Wilfried
authors.initials: W
authors.lastname: Andlauer
mesh_terms: D003890:Desiccation / Q000379:methods*; D005419:Flavonoids / Q000032:analysis; D005511:Food Handling / Q000379:methods*; D046936:Photinia / Q000737:chemistry*; D010936:Plant Extracts / Q000032:analysis*; D059808:Polyphenols / Q000032:analysis; D011208:Powders / Q000737:chemistry
chemical_list: D005419:Flavonoids; D010936:Plant Extracts; D059808:Polyphenols; D011208:Powders
keywords: Antioxidant capacity; Aronia; Drying; High-temperature drying; Low-temperature drying; Polyphenolic compounds; Powder; Processing