Abstract
The triterpene alcohol fraction in several virgin olive oils and the corresponding oils refined by alkali and by physical processes was analyzed by gas chromatography. A Δ7 compound was detected in all refined olive oils but not in virgin olive oils. This compound was tentatively identified by gas chromatography-mass spectrometry as 24-methyl-5α-lanosta-7,24-dien-3β-ol, a 24-methylenecycloartanol isomer produced during the refining process by the opening of the 9, 19 cyclopropane ring with formation of a double bond in the Δ7 position and the translocation of a double bond in the side chain from the 24–28 to the 24–25 position.
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Lanzón, A., Albi, T. & Guinda, A. Formation of a Δ7 triterpene alcohol in refined olive oils. J Amer Oil Chem Soc 76, 1421–1423 (1999). https://doi.org/10.1007/s11746-999-0178-0
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DOI: https://doi.org/10.1007/s11746-999-0178-0