Aspects of quercetin stability and its liposomal enhancement in yellow onion skin extracts

Osojnik Črnivec, Ilja Gasan (avtor), Skrt, Mihaela (avtor), Polak, Tomaž (avtor), Šeremet, Danijela (avtor), Mrak, Polona (avtor), Komes, Draženka (avtor), Vrhovšek, Urška (avtor), Poklar Ulrih, Nataša (avtor)

Quercetin is a flavonoid that occurs in many types of fruit and vegetables and is stable for no longer than 4.5 h in the investigated pH range (6.0–8.0), even at 4 °C in the dark. At higher temperatures, the degradation/oxidation process is much faster. Simple but effective proliposomal encapsulation was used to protect the quercetin from environmental conditions such as pH. With this approach, 65 to 90% of pure quercetin and quercetin-rich onion extract was kept after >60 days under conditions that favoured its oxidation (pH 7.4). In addition, the encapsulated quercetin decreases the lipid peroxidation induced by pulsed UV light by >50%. At a mass ratio of 1:100 quercetin to lipids (w/w), the liposomes remained intact in solutions for six months. Quercetin in lipid bilayers simultaneously protects the unsaturated lipids from peroxidation.

• Jezik: Angleški jezik
• Ključne besede: quercetin, quercetin-rich onion extract, stability, encapsulation, liposomes
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 10 str.
• Številčenje: Vol. 459, art. 140347
• PID: 20.500.12556/RUL-159519
• UDK: 664.0+641.1:635.25:615.014.6
• ISSN pri članku: 0308-8146
• DOI: 10.1016/j.foodchem.2024.140347
• COBISS.SI-ID: 200854275
• Datum objave v RUL: 11.07.2024

Gradivo je del revije

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

Licence

• Licenca: CC BY-NC 4.0, Creative Commons Priznanje avtorstva-Nekomercialno 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc/4.0/deed.sl
• Opis: Licenca Creative Commons, ki prepoveduje komercialno uporabo, vendar uporabniki ne rabijo upravljati materialnih avtorskih pravic na izpeljanih delih z enako licenco.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: čebula, čebulni olupki, kvercetin, enkapsulacija