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Determination of esters of fatty acids with low molecular weight alcohols in olive oils.
J Agric Food Chem. 2002 Jul 31; 50(16):4721-5.JA

Abstract

A simple and precise analytical method was developed for the simultaneous determination of squalene and methyl, ethyl, propyl, and butyl esters of fatty acids present in olive and olive pomace oils. A fraction containing squalene and fatty acid alkyl esters was isolated from the oil by solid phase extraction on silica gel cartridges and quantitatively analyzed by gas chromatography. A modification of the procedure allowed the isolation of squalene and esters separately. Repeatability and recovery of the method were good. The method was applied to extra and lampant virgin olive oil categories and also to oils obtained from olive pomace by second centrifugation and solvent extraction. Extra virgin olive oils contained low amounts of fatty acid methyl and ethyl esters, while oils obtained from altered olive or olive pomace showed high concentrations of fatty acid alkyl esters, mainly ethyl esters. Correlation between oil acidity and ethyl esters concentration was poor.

Authors+Show Affiliations

Instituto de la Grasa (CSIC), Avenida Padre García Tejero 4, 41012 Sevilla, Spain.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

12137504

Citation

Pérez-Camino, M Carmen, et al. "Determination of Esters of Fatty Acids With Low Molecular Weight Alcohols in Olive Oils." Journal of Agricultural and Food Chemistry, vol. 50, no. 16, 2002, pp. 4721-5.
Pérez-Camino MC, Moreda W, Mateos R, et al. Determination of esters of fatty acids with low molecular weight alcohols in olive oils. J Agric Food Chem. 2002;50(16):4721-5.
Pérez-Camino, M. C., Moreda, W., Mateos, R., & Cert, A. (2002). Determination of esters of fatty acids with low molecular weight alcohols in olive oils. Journal of Agricultural and Food Chemistry, 50(16), 4721-5.
Pérez-Camino MC, et al. Determination of Esters of Fatty Acids With Low Molecular Weight Alcohols in Olive Oils. J Agric Food Chem. 2002 Jul 31;50(16):4721-5. PubMed PMID: 12137504.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Determination of esters of fatty acids with low molecular weight alcohols in olive oils. AU - Pérez-Camino,M Carmen, AU - Moreda,Wenceslao, AU - Mateos,Raquel, AU - Cert,Arturo, PY - 2002/7/26/pubmed PY - 2002/9/12/medline PY - 2002/7/26/entrez SP - 4721 EP - 5 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 50 IS - 16 N2 - A simple and precise analytical method was developed for the simultaneous determination of squalene and methyl, ethyl, propyl, and butyl esters of fatty acids present in olive and olive pomace oils. A fraction containing squalene and fatty acid alkyl esters was isolated from the oil by solid phase extraction on silica gel cartridges and quantitatively analyzed by gas chromatography. A modification of the procedure allowed the isolation of squalene and esters separately. Repeatability and recovery of the method were good. The method was applied to extra and lampant virgin olive oil categories and also to oils obtained from olive pomace by second centrifugation and solvent extraction. Extra virgin olive oils contained low amounts of fatty acid methyl and ethyl esters, while oils obtained from altered olive or olive pomace showed high concentrations of fatty acid alkyl esters, mainly ethyl esters. Correlation between oil acidity and ethyl esters concentration was poor. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/12137504/Determination_of_esters_of_fatty_acids_with_low_molecular_weight_alcohols_in_olive_oils_ L2 - https://doi.org/10.1021/jf025542+ DB - PRIME DP - Unbound Medicine ER -