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Cholesterol oxidation in feta cheese produced from high-temperature bleached and from non-bleached butteroil from bovine milk

  • Jacob H. Nielsen (a1), Carl Erik Olsen (a1), Jeff Lyndon (a1), John Sørensen (a2) and Leif H. Skibsted (a1)...

Summary

During chill storage, cholesterol oxidation in feta cheese produced from bovine butteroil bleached at high temperature was compared with cholesterol oxidation in feta cheese produced from non-bleached butteroil. The bleaching was performed at two different temperatures, 265 and 280 °C, and the oil was bleached for 2·4, 3·8 or 4·3 min; a reference feta cheese was produced without bleaching. All cheeses were stored in brine at 4 °C, and cholesterol oxidation was measured during a storage period of 5 months. For the first 11 weeks of storage, the concentration of cholesterol oxides was comparable for the bleached feta cheeses, but on longer storage the concentration of oxysterols was highest in feta cheeses produced from the butteroil bleached at 280 °C. The bleaching temperature rather than the bleaching time affected cholesterol oxidation, which was minimal in the non-bleached reference cheese throughout the storage period compared with the bleached feta cheeses. 7-Ketocholesterol was found to be the dominant oxysterol in the feta cheeses at the end of the storage, comprising ∼ 50% of the total cholesterol oxides. In feta cheeses based on butteroil bleached at 265 °C, the concentration of 7-ketocholesterol ranged from 3·7 to 4·9 µg/g lipid at the end of the storage period, and in feta cheese based on butteroil bleached at 280 °C the concentration was 10·4–13·1 µg/g lipid. In the reference feta cheese the concentration of 7-ketocholesterol was 1·2 /µg/g lipid. There was no difference in yellowness, measured by tristimulus colorimetry as the Hunter b characteristic, of the feta cheeses bleached at 265 and 280 °C, and a small scale bleaching experiment with butteroil showed that it was possible to secure complete bleaching at temperatures down to 220 °C. We suggest that bleaching of butteroil for feta production should be performed at temperatures as low as possible in order to prevent cholesterol oxidation.

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References

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Jacobson, M. S. 1987 Cholesterol oxides in Indian ghee. Possible cause of unexplained high risk of atherosclerosis in Indian immigrant populations. Lancet ii 656658
Jørgensen, K. & Skibstbd, L. H. 1990 Light sensitivity of carotenoids used as food colours. Quantum-yields dependence of wavelength and oxygen pressure for direct and sensitized photodegradation of soiubilized lutein and β-carotene. Zeitschrift für Lebensmittel-Untersuchung nnd -Forschung 190 306313
Kumar, N. & Singhal, O. P. 1992 Effect of processing conditions on the oxidation of cholesterol in ghee. Journal of the Science of Food and Agriculture 58 267273
Nielsen, J. H., Olsen, C. E., Duedahl, C. & Skibsted, L. H. 1995 Isolation and quantification of cholesterol oxides in dairy products by selected ion monitoring mass spectrometry. Journal of Dairy Research 62 101113
Nielsen, J. H., Olsen, C. E., Jensen, C. & Skibsted, L. H. 1996 Cholesterol oxidation in butter and dairy spread during storage. Journal of Dairy Research 63 159167
Nourooz-Zadeh, J. & Appelqvist, L. -Å. 1988 Cholesterol oxides in Swedish foods and food ingredients: butter and cheese. Journal of the American Oil Chemists' Society 65 16351641
Palozza, P. & Krinsky, N. I. 1992 Antioxidant effects of carotenoids in vivo and in vitro: an overview. Methods in Enzymology 213 403420
Peng, S. -K. & Morin, R. J. 1991 Biological Effects of Cholesterol Oxides. Boca Raton, PL: CRC Press
Pie, J. E., Spahis, K. & Seillan, C. 1990 Evaluation of oxidative degradation of cholesterol in food and food ingredients: identification and quantification of cholesterol oxides. Journal of Agricultural and Food Chemistry 38 973979
Sander, B. D., Smith, D. E. & Addis, P. B. 1988 Effects of processing stage and storage conditions on cholesterol oxidation products in butter and Cheddar cheese. Journal of Dairy Science 71 31733178
Smith, L. L., Kulig, M. J. & Teng, J. I. 1973 Sterol metabolism. XXVI. Pyrolysis of some sterol allylic alcohols and hydroperoxides. Steroids 22 627635

Cholesterol oxidation in feta cheese produced from high-temperature bleached and from non-bleached butteroil from bovine milk

  • Jacob H. Nielsen (a1), Carl Erik Olsen (a1), Jeff Lyndon (a1), John Sørensen (a2) and Leif H. Skibsted (a1)...

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