Effect of Vacuum Impregnation with Apple-Pear Juice on Content of Bioactive Compounds and Antioxidant Activity of Dried Chokeberry Fruit
Agnieszka Nawirska-Olszańska , Marta Pasławska , Bogdan Stępień , Maciej Oziembłowski , Kinga Sala , Aleksandra Smorowska
AbstractFood technology seeks ways to preserve products while maintaining high bioactive properties. Therefore, an attempt was made to assess the effect of the process of impregnation with apple-pear juice and the drying process on the content of bioactive compounds in chokeberry fruit. Chokeberry fruits were subjected to impregnation with apple-pear juice at three levels of vacuum pressure, 4, 6, and 8 kPa; then, they were dried using microwave-vacuum technology. The water activity of the obtained products, the content of fructose, glucose, sorbitol, and polyphenolic compounds, and antioxidant activity were determined. A total of 20 polyphenolic compounds were identified in the fruits and the obtained products (seven anthocyanins, six flavonols, four phenolic acids, and three flavan-3-ols). Preliminary processing, which consisted of introducing the juice ingredients into tissue of the chokeberry fruit, resulted in increased content of bioactive compounds. Moreover, a positive effect of impregnation on the antioxidant stability of the fruit after drying was noted. Water activity in the obtained products showed their microbiological safety. Impregnation at 4 kPa vacuum pressure proved to be the most desirable; in such conditions, the best product in terms of the content of bioactive compounds was obtained.
|Journal series||Foods, ISSN 2304-8158, (N/A 70 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||Aronia melanocarpa; vacuum impregnation; polyphenolic compounds; sugars; ultraperformance liquid chromatography; photodiode array detection; tandem mass spectrometry|
|Internal identifier||PX-5e2954ced5de835259c5a0a4 ; PX-5e29571cd5de835259c5a17b|
|License||Journal (articles only); published final; ; with publication|
|Score||= 70.0, 02-07-2020, ArticleFromJournal|
|Publication indicators||= 0; = 0; : 2018 = 3.011 (2)|
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