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  • 标题:Analysis of methanol and ethanol in virgin olive oil
  • 本地全文:下载
  • 作者:Raquel B. Gómez-Coca ; Rosario Cruz-Hidalgo ; Gabriel D. Fernandes
  • 期刊名称:MethodsX
  • 印刷版ISSN:2215-0161
  • 电子版ISSN:2215-0161
  • 出版年度:2014
  • 卷号:1
  • 页码:207-211
  • DOI:10.1016/j.mex.2014.09.002
  • 语种:English
  • 出版社:Elsevier
  • 摘要:Graphical abstractAbstractThis work provides a short and easy protocol that allows the analysis of both methanol and ethanol in the static headspace of olive oil. The procedure avoids any kind of sample pre-treatment beyond that of heating the oil to allow a maximum volatile concentration in the headspace of the vials. The method's LOD is 0.55mgkg−1and its LOQ is 0.59mgkg−1. Advantages of this method are:•Simultaneous determination of methanol and ethanol (the pre-existing Spanish specification UNE-EN 14110 only analyses methanol).•No need of equipment modifications (standard split injectors work perfectly). Use of a highly polar capillary GC column, leading in most cases to chromatograms in which only three dominant peaks are present – methanol, ethanol, and propanol (that is extremely positive for easy interpretation of results).•Use of an internal standard (1-propanol) to determine the concentration of the analytes, reducing the presence of error sources.
  • 关键词:Virgin olive oil volatiles;Methanol determination;Ethanol determination;Fatty acid alkyl esters (FAAE);Olive oil, Analysis of volatiles
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