Inhibitions of the autoxidation of linoleic acid by flavonoids in micelles
β Scribed by Pan-Fen Wang; Rong-Liang Zheng
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 265 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0009-3084
No coin nor oath required. For personal study only.
β¦ Synopsis
The activities of five flavonoids as chain-breaking antioxidants have been studied for the autoxidation of linoleic acid in cetyl trimethylammonium bromide (CTAB) micelles at 37 degrees C. Flavonols such as quercetin, rutin and morin exhibited antioxidant activities, while two flavanones, naringin and hesperidin, did not suppress the oxidation appreciably. The ratio of rate constants for inhibition and propagation kinh/kp and stoichiometric factor n were determined.
π SIMILAR VOLUMES
The UV-induced dissociation of lipid hydroperoxides, naturally present in methyl linoleate and methyl linoelaidate, was monitored by absorption spectroscopy. The decay of hydroperoxides in homogeneous solution, for a fluence rate of 0.82 mW.cm -2 at 240 nm, followed an exponential course with an ave
Autoxidation was initiated in frozen linoleic acid methyl ester by UV irradiation. The subsequent steps in autoxidation were controlled by raising the temperature above certain critical values. The pentadienyl radical, formed by UV irradiation at 77 or 90 K, was stabilized in traps of two different