Detecting Essential Oil Adulteration

Ke, Boren; Dg, Young; Woolley, CL; Smith, Blair H.; Re, Carlson

doi:10.4172/2380-2391.1000132

Cited by 4 publications

(1 citation statement)

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“…[8,9] For essential oils containing chiral compounds, enantioselective gas chromatography is a very useful technique to detect the adulteration by the addition of synthetic compounds. [7,9,10] Spectroscopic techniques, such as nuclear magnetic resonance (NMR), fluorescence spectroscopy, and nearinfrared spectroscopy, have also been proposed for authentication of essential oils. [7,[11][12][13][14] Usually, spectroscopic techniques are combined with chemometric methods, thus resulting in very effective tools for the rapid identification/characterization of samples.…”

Section: Introductionmentioning

confidence: 99%

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

Jentzsch

Sandoval‐Pauker

Pozo

et al. 2021

J Raman Spectroscopy

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Essential oils are liquid mixtures of volatile compounds extracted from plants. Their quality is usually controlled via gas chromatography (GC), although with limitations when adulterants are nonvolatile substances. The essential oils of lavender (Lavandula angustifolia Mill.), peppermint (Mentha piperita L.), patchouli (Pogostemon cablin Benth), and their adulterated versions were measured by GC coupled to flame ionization detector (GC‐FID) and Raman spectroscopy. Canola oil, a nonvolatile substance, was used as the adulterant. The adulterated essential oils contained 1%, 3%, 5%, 10%, 15%, and 20% (v/v) of canola oil. Chromatograms of the adulterated essential oils containing 20% (v/v) of canola oil showed decrements in peak areas of the essential oil components, compared with peaks of the pure essential oils. The highest decrements were observed for the adulterated essential oil of patchouli. In general, detection of adulterated essential oils by simple visual inspection of the Raman features was difficult, due to slight differences observed in the spectra. Principal Components Analysis (PCA) allowed achieving a good spectral discrimination between pure and adulterated essential oils. These results suggest that Raman spectroscopy can overcome limitations of GC‐based methods, thus becoming an interesting alternative and complementary technique for quality control of essential oils.

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Section: Introductionmentioning

confidence: 99%

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

Jentzsch

Sandoval‐Pauker

Pozo

et al. 2021

J Raman Spectroscopy

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DNA barcoding of some medicinally important plant species of Lamiaceae family in India

2021

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Adulterant Detection in Peppermint Oil by Means of Holographic Photopolymers Based on Composite Materials with Liquid Crystal

et al. 2022

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Diffraction gratings are recorded in a holographic photopolymer containing nematic liquid crystal and peppermint oil. The presence of the oil modifies the polymerization and the holographic response. The composite containing oil adulterated with triethyl citrate obtains a diffraction efficiency related to the oil’s purity. The results obtained suggest the possibility of developing a holographic chemical analysis method for quality control of raw materials.

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Detecting Essential Oil Adulteration

Cited by 4 publications

References 0 publications

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

Raman spectroscopy in the detection of adulterated essential oils: The case of nonvolatile adulterants

DNA barcoding of some medicinally important plant species of Lamiaceae family in India

Adulterant Detection in Peppermint Oil by Means of Holographic Photopolymers Based on Composite Materials with Liquid Crystal

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