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A kinetic approach in the evaluation of radical-scavenging efficiency of sinapic acid and its derivatives
ID
Martinović, Neda
(
Author
),
ID
Polak, Tomaž
(
Author
),
ID
Makuc, Damjan
(
Author
),
ID
Poklar Ulrih, Nataša
(
Author
),
ID
Abramovič, Helena
(
Author
)
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http://www.mdpi.com/1420-3049/22/3/375
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Abstract
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.
Language:
English
Keywords:
sinapic acid
,
antioxidant activity
,
radical scavenging kinetics
,
radical scavenging mechanisms
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
BF - Biotechnical Faculty
Publication status:
Published
Publication version:
Version of Record
Year:
2017
Number of pages:
17 str.
Numbering:
Vol. 22, iss. 3, art. 375
PID:
20.500.12556/RUL-131182
UDC:
577.1:547.587.53
ISSN on article:
1420-3049
DOI:
10.3390/molecules22030375
COBISS.SI-ID:
4761720
Publication date in RUL:
23.09.2021
Views:
647
Downloads:
139
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Record is a part of a journal
Title:
Molecules
Shortened title:
Molecules
Publisher:
MDPI
ISSN:
1420-3049
COBISS.SI-ID:
18462981
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:
01.03.2017
Secondary language
Language:
Slovenian
Keywords:
organske kisline
,
fenolne kisline
,
sinapinske kisline
,
sinapin
,
antioksidativna učinkovitost
,
DPPH
,
lovilci prostih radikalov
Projects
Funder:
EC - European Commission
Funding programme:
Erasmus Mundus Action 2
Name:
Basileus III
Funder:
ARRS - Slovenian Research Agency
Project number:
P4-0121
Name:
Biokemijska in biofizikalno-kemijska karakterizacija naravnih snovi
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