In this study, fruit juices that are rich sources of anthocyanins, obtained from aronia (Am. chokeberry, Aronia melanocarpa) and blueberry honeysuckle (Lonicera caerulea L. var. edulis) were used to examine the preservation of plant phytochemicals and bioactivity upon sterilization -either thermal, or with an EnbioJet microwave flow pasteurizer. The chemical properties verified included determinations of anthocyanins and other polyphenols by HPLC, total antioxidant activity, and profiles of antioxidants by post-column derivatization. Compared to heat treatment, the higher stability of aronia and blueberry honeysuckle phytocomplexes during processing with the EnbioJet device for temperatures ensuring microbial purity (range investigated 90 - 130 °C) was demonstrated. In the same batches of juices submitted to heating at 100 °C, the rapid decline of anthocyanin content accompanied by lowered antioxidant activity was observed. The changes in chemical composition were reflected in altered biological activity. Both cytotoxicity and protection of DNA against oxidative damage were higher for microwaved juices than for juices processed by the heating method that caused degradation of bioactive phytochemicals.
Authors
- Anita Piasek link open in new tab ,
- dr hab. inż. Barbara Kusznierewicz link open in new tab ,
- Iwona Grzybowska link open in new tab ,
- dr hab. inż. Edyta Malinowska-Pańczyk link open in new tab ,
- mgr inż. Anna Piekarska link open in new tab ,
- Amaya Azqueta,
- Andrew R. Collins,
- prof. dr hab. inż. Jacek Namieśnik link open in new tab ,
- prof. dr hab. inż. Agnieszka Bartoszek-Pączkowska link open in new tab
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.jfca.2011.04.005
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2011
