| Autor: |
Orozco MI; Department of Analytical Chemistry, University of Córdoba , E-14071 Córdoba, Spain., Priego-Capote F, Luque de Castro MD |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of agricultural and food chemistry [J Agric Food Chem] 2011 Jul 13; Vol. 59 (13), pp. 7194-202. Date of Electronic Publication: 2011 Jun 20. |
| DOI: |
10.1021/jf2015792 |
| Abstrakt: |
The influence of deep frying, mimicked by 20 heating cycles at 180 °C (each cycle from ambient temperature to 180 °C maintained for 5 min), on the unsaponifiable fraction of vegetable edible oils represented by three characteristic families of compounds (namely, phytosterols, aliphatic alcohols, and triterpenic compounds) has been studied. The target oils were extra virgin olive oil (with intrinsic content of phenolic antioxidants), refined sunflower oil enriched with antioxidant phenolic compounds isolated from olive pomace, refined sunflower oil enriched with an autoxidation inhibitor (dimethylpolysiloxane), and refined sunflower oil without enrichment. Monitoring of the target analytes as a function of both heating cycle and the presence of natural antioxidants was also evaluated by comparison of the profiles after each heating cycle. Identification and quantitation of the target compounds were performed by gas cromatography-mass spectrometry in single ion monitoring mode. Analysis of the heated oils revealed that the addition of natural antioxidants could be an excellent strategy to decrease degradation of lipidic components of the unsaponifiable fraction with the consequent improvement of stability. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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