Journal Issue:
Volume 16, Issue 1

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Volume

16

Number

1

Issue Date

2024-04

Journal Title

The Annals of "Valahia" University of Târgoviște – Agriculture Section

Journal ISSN

2065-2720

Journal Volume

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Item type:Journal Volume,
Volume 16 (2024)
The Annals of "Valahia" University of Târgoviște – Agriculture Section (16)

Articles

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Item type:Publication,
PHYTOCHEMICAL STUDY OF THE THREE MAIN ONION VARIETIES (ALLIUM CEPA L.) GROWN IN ALGERIA
(Valahia University of Targoviste, 2024-04)
El Kadi, Fatima Zohra
;
Belkhodja, Hamza
;
Labbaci, Fatima Zohra
;
Lebga, Houaria
;
Tefiani, Manel
Three species of Allium cepa (red, purple, yellow) were evaluated for their secondary metabolite content, free radical scavenging activity (DPPH), and ferric reducing ability (FRAP). Our findings confirm that the dry matter content in all varieties ranged from 12.3% to 18.1%, rendering them suitable for extended storage. The ethanolic extract of red onion (EERO) displayed the highest yield (3.86%). Similarly, the levels of total phenols (TPC), total flavonoid content (TFC), hydroxycinnamic acid (HTC), and cysteine-containing peptide (CTC) varied between 0.14 and 0.27 mg/g GAE, 0.20 and 0.29 mg/g QE, 0.25 and 0.29 mg/g GAE, and 0.015 and 0.102 mg CE/g DW, respectively. Furthermore, ethanolic extract of yellow onion (EEYO) demonstrated a significant iron reduction capacity (0.75 ± 0.06 mM Fe2+) and an IC50 of 0.159 ± 0.18 mg/ml, indicating enhanced antioxidant potential.

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