Comparative Study on Antioxidant Activity of Lycopene (Z)-Isomers in Different Assays
In: Journal of agricultural and food chemistry (Print), Jg. 59 (2011), Heft 9, S. 4504-4511
academicJournal
- print, 42 ref
Zugriff:
Several studies have implicated the potent antioxidant properties oflycopene. However, most of the studies used only the (all-E)-isomer. (Z)-Isomers of lycopene were found in substantial amounts in processed foods and in human tissues. In the present study, we investigated in vitro the antioxidant activity of (5Z)-, (9Z)-, and (13Z)-lycopene compared to the (all-E)-isomer. Additionally, prolycopene, the (7Z,9Z,7'Z,9'Z)-isomer found in tangerine tomatoes, was analyzed. No significant differences were found between the isomers in ferric reducing antioxidant power assay and in bleaching the radical cation of 2,2'-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), both based on ET mechanisms. In contrast, scavenging activity against peroxyl radicals generated by thermal degradation of 2,2'-azobis(2-amidinopropane) (AAPH) was higher in the (Z)-isomers. (5Z)-Lycopene was most antioxidant in scavenging lipid peroxyl radicals, evaluated by analyzing the inhibition of MbFeIII lipid peroxidation of linoleic acid in mildly acidic conditions (pH 5.8) in a micellar environment, modeling a possible antioxidant action in the gastric compartment.
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Comparative Study on Antioxidant Activity of Lycopene (Z)-Isomers in Different Assays
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Autor/in / Beteiligte Person: | MÜLLER, Lars ; GOUPY, Pascale ; FRÖHLICH, Kati ; DANGLES, Olivier ; CARIS-VEYRAT, Catherine ; BÖHM, Volker |
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Zeitschrift: | Journal of agricultural and food chemistry (Print), Jg. 59 (2011), Heft 9, S. 4504-4511 |
Veröffentlichung: | Washington, DC: American Chemical Society, 2011 |
Medientyp: | academicJournal |
Umfang: | print, 42 ref |
ISSN: | 0021-8561 (print) |
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