scholarly journals GC-MS Characterization of the Compounds in Some Essential Oils

1970 ◽  
Vol 66 (1) ◽  
Author(s):  
C. MESAROS ◽  
M. CULEA ◽  
A. IORDACHE ◽  
O. COZAR
Keyword(s):  
Mass Spectrometry ◽  
Essential Oils ◽  
Aliphatic Hydrocarbons ◽  
Suitable Temperature ◽  
Chromatographic Mass

The composition of different essential oils (menthe, basil, lavender, rose) was investigated by gas chromatographic–mass spectrometry (GC–MS) method to identify those compounds responsible for the characteristic, pleasant floral or aroma odour or taste of some valuable oils. Three different rose oils presented monoterpenes as fragrance target compounds and some aliphatic hydrocarbons with fixative effects responsible for a longer-lasting odour impression. Chromatography was performed on a 5% phenyl methylpolysiloxane column (15 or 30 m x 0.25 mm I.D., 0.25 µm) operated in suitable temperature programs.

Characterization of drug interferences caused by coelution of substances in gas chromatography/mass spectrometry confirmation of targeted drugs in full-scan and selected-ion monitoring modes

1994 ◽  
Vol 40 (2) ◽  
pp. 216-220 ◽  
Author(s):  
A H Wu ◽  
D Ostheimer ◽  
M Cremese ◽  
E Forte ◽  
D Hill
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography Mass Spectrometry ◽  
Spectrometric Analysis ◽  
Targeted Drugs ◽  
Selected Ion Monitoring ◽  
Internal Standards ◽  
Target Drug ◽  
Full Scan ◽  
Chromatographic Mass

Abstract Interference by substances coeluting with targeted drugs is a general problem for gas chromatographic/mass spectrometric analysis of urine. To characterize these interferences, we examined human urine samples containing benzoylecgonine and fluconazole, and other drug combinations including deuterated internal standards that coelute (ISd,c) with target drugs, by selected-ion monitoring (SIM) and full-scan mass spectrometry. We show that, by SIM analysis, detecting the presence of an interferent is dependent on the specific IS used for the assay. When an ISd,c is used, the presence of another coeluting substance (interferent) suggests that the intensity of IS ions is substantially diminished, because the interferent affects both the ISd,c and target drug. When a noncoeluting IS (ISnc) is used, the interferent cannot be discerned unless it coincidently contains one or more of the ions monitored for either the target drug or ISnc. Under full-scan analysis, a coeluting interferent is directly discernable by examining the total ion gas chromatogram.

Gas Chromatographic-Mass Spectrometry Study of the Essential Oils of Pimenta racemosa var. terebinthina and P. racemosa var. grisea

2002 ◽  
Vol 57 (5-6) ◽  
pp. 449-451 ◽  
Author(s):  
Dolores García ◽  
Antonio Alvarez ◽  
Paz Tornos ◽  
Angeles Fernandez ◽  
Teresa Sáenz
Keyword(s):  
Mass Spectrometry ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectrometry Study ◽  
Pimenta Racemosa ◽  
Chromatographic Mass

The essential oil of the leaves of P. racemosa var. terebinthina and P. racemosa var. grisea were examined by GC and GC/MS. The major constituents were α-terpineol acetate (27%), α-terpineol (20%) and 4-methoxy eugenol (12.6%) for P.racemosa var. terebinthina and 4-methoxy-isoeugenol (75.2%) and 4-methoxy-eugenol (4.5%) for P. racemosa var. grisea.

scholarly journals Characterization of the chemical composition of the essential oils from Annona emarginata (Schltdl.) H. Rainer 'terra-fria' and Annona squamosa L.

2014 ◽  
Vol 36 (spe1) ◽  
pp. 202-208 ◽  
Author(s):  
Felipe Girotto Campos ◽  
Daniel Baron ◽  
Marcia Ortiz Mayo Marques ◽  
Gisela Ferreira ◽  
Carmen Silvia Fernandes Boaro
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Nutrient Solution ◽  
Annona Squamosa ◽  
Chemical Profiles

The objective of this study was to characterize the chemical composition of the essential oil from the leaves of Annona emarginata (Schltdl.) H. Rainer 'terra-fria' and Annona squamosa L. The species were grown in a greenhouse for 18 months, which nutrient solution was applied weekly; the plants were then harvested and the leaves dried to extract the essential oil. The essential oil was analyzed by gas chromatography and mass spectrometry to study its chemical profiles. Eleven substances were found in the essential oil of A. emarginata, primarily (E)-caryophyllene (29.29%), (Z)-caryophyllene (16.86%), γ-muurolene (7.54%), α-pinene (13.86%), and tricyclene (10.04%). Ten substances were detected in the oil from A. squamosa, primarily (E)-caryophyllene (28.71%), (Z)-caryophyllene (14.46%), α-humulene (4.41%), camphene (18.10%), α-pinene (7.37%), β-pinene (8.71%), and longifolene (5.64%). Six substances were common to both species: (E)-caryophyllene, (Z)-caryophyllene, α-humulene, camphene, α-pinene, and β-pinene.

scholarly journals Characterization of Essential Oil Components from Aromatic Plants that Grow Wild in the “Piana del Sele” (Salerno, Southern Italy) using Gas Chromatography-Mass Spectrometry

2015 ◽  
Vol 10 (7) ◽  
pp. 1934578X1501000 ◽  
Author(s):  
Daniele Naviglio ◽  
Laura Le Grottaglie ◽  
Manuela Vitulano ◽  
Marco Trifuoggi ◽  
Monica Gallo
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oils ◽  
Southern Italy ◽  
Gas Chromatography Mass Spectrometry ◽  
Thymus Vulgaris ◽  
Mentha Spicata ◽  
Flame Ionization ◽  
Aldehydes And Ketones

Essential oils from Rosmarinus officinalis, Salvia officinalis, Thymus vulgaris, Melissa officinalis and Mentha spicata growing wild in the “Piana del Sele” (Salerno, Southern Italy) have been extracted by hydro-distillation, quantified and characterized by gas chromatography coupled with flame ionization detection (FID) and mass-spectrometry (MS). Sixty-nine compounds were identified and classified according to their chemical classes. The results showed that the composition of the essential oils was extremely variable and specific for each botanical species. Hydrocarbons were the most abundant class in all essential oils except for sage where aldehydes and ketones were the most representative compounds. Only for thyme was a higher content of alcohols found.

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