Processing effects on the polyaromatic hydrocarbon content of grapeseed oil
Grapeseed oil can occasionally have dangerous levels for human health of polycyclic aromatic hydrocarbons (PAH) due to the drying process, which involves direct contact with combustion gases. Oil samples extracted from grapeseeds before and after drying were analyzed for their PAH content with a new, fast, bi-dimensional liquid chromatography method. Samples collected before drying had relatively high PAH amounts; Benzo(a)pyrene (BaP) content ranged from 0.9 to 2.4 ppb with an average of 1.4 ppb. The high contamination level found in the raw material is probably due to the practice of compacting pomace with bulldozers to reduce its volume before storage. The drying process did not significantly influence the light PAH content, but caused a large increase of the heavy fraction. BaP with an average content of 20.2 ppb, had the largest increase.
Key wordsBi-dimensional liquid chromatography grapeseed oil polycyclic aromatic hydrocarbons
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- 1.Bories, G., Tossicità degli idrocarburi policiclici aromatici e dei prodotti di pirolisi, in Tossicologia e Sicurezza degli Alimenti, edited by Tecniche Nuove, Milano, 1988, pp. 359–372.Google Scholar
- 2.Larsen, J.C., and E. Poulsen, in Toxicological Aspects of Food, edited by K. Miller, Elsevier Applied Science, London, 1987, pp. 205–212.Google Scholar
- 3.Zedeck, M.S., Polycyclic Aromatic Hydrocarbons, J. Environ. Pathol. Toxicol. 3:537–567 (1980).Google Scholar
- 5.Gertz, C., and H. Kogelheide, Untersuchung und Beurteilung von PAK in Speisefetten und-ölen, Fat Sci. Technol. 96:175–180 (1994).Google Scholar
- 6.Balenovic, J., I. Petrovic, and M. Perkovac, Determination of Polycyclic Aromatic Hydrocarbons in Vegetable Oils, in Proceeding of Euro Food Chemistry VIII, Wien, September 18–20, 1995, Vol. 2, pp. 275–281.Google Scholar
- 7.Amerine M.A., R.E. Kunkee, C.S. Ough, V.L. Singleton, and A.D. Webb, in The Technology of Wine Making, edited by AVI Publishing Company Inc., Westport, Connecticut, 1980, p. 645.Google Scholar
- 10.Mariani, C., and E. Fedeli, Idrocarburi Policiclici Aromatici negli oli vegetali, Riv. Ital. Sostanze Grasse 61:305–315 (1984).Google Scholar
- 11.Guillen, M.D., Polycyclic Aromatic Compounds: Extraction and Determination in Food, Food Addit. Contam. 11:669–684 (1994).Google Scholar
- 12.Tamakawa, T.K., T. Kato, and M. Oba, Polycyclic Aromatic Hydrocarbons, in Handbook of Food Analysis, Vol. 2: Residue and Other Food Component Analysis, edited by L.M.L. Nollet, Marcel Dekker, Inc., New York, 1996, pp. 1641–1663.Google Scholar
- 14.Moret, S., K. Grob, and L.S. Conte, On-line High-Performance Liquid Chromatography-Solvent Evaporation-High-Performance Liquid Chromatography-Capillary Gas Chromatography-Flame Ionization Detection for the Analysis of Mineral Oil Polyaromatic Hydrocarbons in Fatty Foods, J. Chromatogr. A 750:361–368 (1996).CrossRefGoogle Scholar
- 15.Ciusa, W., and A. Morgante, Gli Idrocarburi Policiclici Aromatici (IPA) come metaboliti naturali di vegetali e organi animali, Riv. Merceol. 29:5–65 (1990).Google Scholar