Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 62, Issue -, Pages 22-33Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2014.08.003
Keywords
Hydrodistillation; Simultaneous steam distillation - solvent extraction (SDE); Gas chromatography-mass spectrometry; Gas chromatography-flame ionization detector; FT-IR; Dispersive-Raman; Chemotype; Lamiaceae
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Funding
- Vigo University (Spain)
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Three different techniques: the classical gas chromatography-mass spectrometry (GC-MS) and two green alternative techniques to the classical chromatography, the spectroscopic techniques Fourier transform infrared (FT-IR), and dispersive-Raman were employed to characterize the main chemotypes of different essential oils from plants of the Lamiaceae family and to compare between techniques. Gas chromatography-flame ionization detector (GC-FID) was also employed to quantify the main compounds present in essential oils isolated by hydrodistillation (HD) and semi-quantify essential oil composition isolated by HD and simultaneous steam distillation - solvent extraction (SDE). While GC cannot differentiate between pure and mixed chemotypes of a compound, FT-IR, and Raman methods allow the creation of libraries, through which chemotype determination is feasible even for mixed chemotypes, thus combining robustness with being rapid and non-destructive techniques. (C) 2014 Elsevier B.V. All rights reserved.
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