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Thorough analysis of Iranian spearmint essential oil: Combination of chemometrics and gas chromatography-mass spectrometry

Jalali Heravi, M ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1039/c3ay42215a
  3. Abstract:
  4. The components of Iranian spearmint essential oil were identified and quantified using gas chromatography-mass spectrometry (GC-MS) combined with chemometric tools. A multivariate curve resolution (MCR) approach was used to overcome the problems of background, baseline offset and overlapping/embedded peaks in GC-MS. The peaks were resolved using heuristic evolving latent projection (HELP) and multivariate curve resolution-alternating least squares (MCR-ALS) techniques. A new pure variable selection method named multivariate curve resolution-objective function equal to zero (MCR-FEQZ) is introduced and was applied in this work. The performance of this technique was evaluated and confirmed using MCR-ALS. The analysis of GC-MS data with the help of MCR techniques revealed that the five most abundant constituents of the Iranian spearmint essential oil are (+)-carvone (73.20%), limonen (14.63%), β-bourbonene (1.13%), cineole (1.10%) and 3-terpinolenone (0.82%). The results show that this essential oil could be a great source of carvone and limonene
  5. Keywords:
  6. Gas chromatography ; Monoterpenes ; Baseline offset ; Chemometric tools ; Gas chromatography-mass spectrometries (GC-MS) ; Gas chromatography-mass spectrometry ; Heuristic evolving latent projections ; Multivariate curve resolution ; Multivariate curve resolution-alternating least squares ; Variable selection methods ; Essential oils
  7. Source: Analytical Methods ; Vol. 6, Issue. 17 , 2014 , Pages 6753-6759 ; ISSN: 17599660
  8. URL: http://pubs.rsc.org/en/Content/ArticleLanding/2014/AY/C3AY42215A#!divAbstract