Hulled oat (Avena sativa var.Noni) and naked oat (Avena nuda var. Kamil) : distribution of selected secondary metabolites during germination

Živković, Andrej (avtor), Cigić, Blaž (avtor), Polak, Tomaž (avtor), Požrl, Tomaž (avtor)

This study explores dynamic changes in growth, total phenolic content (TPC), antioxidant activity (AA), and phenolic composition during the germination of hulled and naked oat. The shoots and kernels of the germinated oat were analysed separately. Both TPC and AA increased throughout germination, particularly in the shoots with higher accumulation of the free phenolic fraction. LC–MS analysis of the oat extracts identified avenanthramides, isoschaftoside, vitexin, and phenolic acids as key metabolites. Avenanthramides, a major class of polyphenolic compounds in oats, varied in concentration and distribution between species. Germination notably increased isoschaftoside and vitexin levels by 28- and 5.3-fold, respectively. Differences in phenolic profiles indicate species-specific metabolic responses. To the best of our knowledge, this is the first comparative analysis of secondary metabolites in oat shoots and kernels during germination, providing new insights into growth dynamics and potential health benefits linked to elevated phenolics and antioxidant activity.

• Jezik: Angleški jezik
• Ključne besede: naked oat, germination, isoschaftoside, avenanthramides, shoots, kernels, free and bound fractions
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2025
• Št. strani: 9 str.
• Številčenje: Vol. 492, part 3, art. 145505
• PID: 20.500.12556/RUL-175387
• UDK: 633.13:581.142:66.094.3.097.8:547.56:604.4
• ISSN pri članku: 0308-8146
• DOI: 10.1016/j.foodchem.2025.145505
• COBISS.SI-ID: 241962755
• Datum objave v RUL: 24.10.2025

Gradivo je del revije

• Naslov: Food chemistry
• Skrajšan naslov: Food chem.
• Založnik: Applied Science Publishers
• ISSN: 0308-8146
• COBISS.SI-ID: 6385415

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: oves, Avena sativa, kaljena ovsena semena, frakcije, fenolne spojine, antioksidativna aktivnost, sekundarni metaboliti

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P4-0234-2018
• Naslov: Integrirano živilstvo in prehrana