Original scientific paper

https://doi.org/10.5562/cca4208

Improving Polyphenol Profile, Antioxidant and Antiglycation Activity of Onion Bulbs

Valerija Vujčić Bok ; University of Zagreb Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Botany,Schrottova 39, HR-10000 Zagreb, Croatia *
Sanja Gagić ; University of Zagreb Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Botany,Schrottova 39, HR-10000 Zagreb, Croatia
Ivana Šola ; University of Zagreb Faculty of Science, Department of Biology, Horvatovac 102a, HR-10000 Zagreb, Croatia
Petra Kašnjar Perković ; Students of the University of Zagreb Faculty of Pharmacy and Biochemistry, A. Kovačića 1, HR-10000 Zagreb, Croatia
Lucija Rubinić ; Students of the University of Zagreb Faculty of Pharmacy and Biochemistry, A. Kovačića 1, HR-10000 Zagreb, Croatia
Nika Celinić ; Students of the University of Zagreb Faculty of Pharmacy and Biochemistry, A. Kovačića 1, HR-10000 Zagreb, Croatia
Gordana Rusak ; University of Zagreb Faculty of Science, Department of Biology, Horvatovac 102a, HR-10000 Zagreb, Croatia
Željan Maleš ; University of Zagreb Faculty of Pharmacy and Biochemistry, Department of Pharmaceutical Botany,Schrottova 39, HR-10000 Zagreb, Croatia

* Corresponding author.

Abstract

The goal of this research is improved polyphenol profile, antioxidant and antiglycation activity of onion bulbs using Matricariae flos (Matricaria chamomilla L.) water extract (12 g L–1). The incubation of 24 h of onion roots was in glass tubes filled with deionized water (control) and in aqueous extract of Matricariae flos (test treatment), in a climate chamber. Total phenols, total hydroxycinnamic acids, total flavonols, antioxidant activity and antiglycation activity were measured in ethanolic (7.5 g L–1) extract before (initial phase) and after in vitro digestion (salivary, gastric and intestinal phase). In almost all phases of in vitro digestion Matricariae flos treatment statistically improved total phenols, total hydroxycinnamic acids, total flavonols, antioxidant activity (ABTS and FRAP) and antiglycation activity (BSA method). The results presented positive influence of Matricariae flos treatment of onion bulbs. Aqueous chamomile extract increases the proportion of polyphenols and antioxidant and antiglycation activity before and after in vitro digestion.

Keywords

Allium cepa L.; Matricaria chamomilla L.; antiglycation activity; antioxidant activity; phenolics

Hrčak ID:

342925

URI

https://hrcak.srce.hr/342925

Publication date:

31.12.2025.

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