Neda Martinović (Avtor), Tomaž Polak (Avtor), Damjan Makuc (Avtor), Nataša Poklar Ulrih (Avtor), Helena Abramovič (Avtor)

Povzetek

A kinetic approach was used to determine the radical scavenging activities of sinapic acid and its derivatives: sinapine, 4-vinylsyringol, syringic acid, syringaldehyde, and ethyl, propyl and butyl sinapate. The responses were expressed as rates of 2,2-diphenyl-1-picrylhydrazyl radical (DPPH$^·$) scavenging (R$_S$), superoxide radical (O$_2$$^{·−}$) scavenging (R$_{FF}$), and β-carotene bleaching in the emulsion system (R$_B$). For R$_S$ and R$_B$, the esters of sinapic acid showed the highest responses while, for R$_{FF}$, this was seen for syringic acid. The effectiveness of the selected compounds for scavenging these free radicals was also determined at a fixed endpoint. The early response parameters were demonstrated to be good discriminators in assessing differences for antioxidants with comparable fixed endpoint activity. The primary feature that ranks the kinetic data and the endpoint determinations is interpreted in terms of the mechanisms of the reactions involved in each of the assays conducted.

Ključne besede

organske kisline;fenolne kisline;sinapinske kisline;sinapin;antioksidativna učinkovitost;DPPH;lovilci prostih radikalov;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL BF - Biotehniška fakulteta
UDK: 577.1:547.587.53
COBISS: 4761720 Povezava se bo odprla v novem oknu
ISSN: 1420-3049
Št. ogledov: 181
Št. prenosov: 60
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: organske kisline;fenolne kisline;sinapinske kisline;sinapin;antioksidativna učinkovitost;DPPH;lovilci prostih radikalov;
Vrsta dela (COBISS): Članek v reviji
Strani: f. 1-17, 375
Letnik: ǂVol. ǂ22
Zvezek: ǂiss. ǂ3
Čas izdaje: 2017
DOI: 10.3390/molecules22030375
ID: 13534219