Colour, moisture adsorption, and antioxidant properties of oven-dried chokeberry powder obtained after ultrasound-assisted osmotic dehydration

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dc.contributor.author Frühbauerová, Michaela
dc.contributor.author Červenka, Libor
dc.contributor.author Kosiorowska, Angelika
dc.contributor.author Królikowska, Karolina
dc.contributor.author Pająk, Paulina
dc.contributor.editor Adam, Martin
dc.date.accessioned 2021-09-23T05:28:43Z
dc.date.available 2021-09-23T05:28:43Z
dc.date.issued 2021
dc.identifier.isbn 978-80-7560-387-6
dc.identifier.issn 1211-5541
dc.identifier.uri https://hdl.handle.net/10195/78458
dc.description.abstract Osmotic dehydration (OD) of chokeberry samples in erythritol (ERT) and xylitol (XYL) solutions enhanced by ultrasonication (US) has been examined in terms of moisture adsorption, colour and antioxidant properties. After air-forced drying, the powder subjected to OD in ERT solution exhibited higher equilibrium moisture contents (EMC) in 0.20–0.45 aw than those in XYL solution. On the other hand, EMC values increased with the prolongation of US time from 5 to 30 min in the case of XYL solution. CIEL*a*b colour system was used for the determination of colour changes. While L* (the colour coordinate represents lightness (L* ~ 100) or darkness (L* ~ 0) of the sample) values decreased with the prolongation of US time from 5 to 30 min for both osmotic agents, only XYL solution caused the increase of a* (the colour coordinate represents green (−a*) or red (+a*) colour of the sample) and b* (the colour coordinate represents blue (−b*) or yellow (+b*) colour of the sample) to their maximum values at 30 min of sonication. A sample of powder subjected to OD in ERT solution has shown a higher total phenolic, total anthocyanin and antioxidant capacity. We may conclude that OD of chokeberries coupled with 30 min of sonication has resulted in chokeberry powder with the highest content of bioactive substances. en
dc.format p. 21-32
dc.language.iso en
dc.publisher University of Pardubice en
dc.relation.ispartof Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 27/2021 en
dc.rights open access en
dc.subject aronia en
dc.subject equilibrium moisture content en
dc.subject sweetener en
dc.subject ANOVA en
dc.title Colour, moisture adsorption, and antioxidant properties of oven-dried chokeberry powder obtained after ultrasound-assisted osmotic dehydration en
dc.type Article en
dc.peerreviewed yes en
dc.publicationstatus published en


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