Chemical composition of Thymus vulgaris L. (Thyme) essential oil from the Rio de Janeiro state, Brazil

The essential oil from fresh leaves of Thymus vulgaris L. from Rio de Janeiro State, Brazil, was isolated by hydrodistillation and analyzed through a combination of GC and GC/MS. Compounds representing 95.1 % of the oil were identified. Thirty-nine constituents were detected, of which twenty-eight were identified according to their chromatographic retention indices and mass spectra. The major constituents of the oil were thymol (44.7 %), p-cymene (18.6 %) and ?-terpinene (16.5%).

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Chemical composition of sage (Salvia officinalis L.) essential oil from the Rio de Janeiro State (Brazil)

Revista Brasileira de Plantas Medicinais ◽

10.1590/s1516-05722013000300018 ◽

2013 ◽

Vol 15 (3) ◽

pp. 438-441 ◽

Cited By ~ 16

Author(s):

A. Porte ◽

R.L.O. Godoy ◽

L.H. Maia-Porte

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Rio De Janeiro ◽

Retention Indices ◽

Salvia Officinalis ◽

Chromatographic Retention ◽

Chromatographic Retention Indices ◽

Valuable Product ◽

Salvia Officinalis L ◽

Janeiro State

The purpose of this study was to investigate the chemical composition of the essential oil from fresh leaves of sage (Salvia officinalis L.) from Petrópolis, Rio de Janeiro State, for international trade. The oil was isolated by hydrodistillation in a Clevenger-type apparatus and analyzed through a combination of GC-FID and GC-MS. The yield was 2.3 % on dry basis. Forty-seven constituents were identified according to their chromatographic retention indices and mass spectra, corresponding to 94.90 % of the compounds present. The major constituents of the oil were α-thujone (40.90 %), camphor (26.12 %), α-pinene (5.85 %) and β-thujone (5.62 %). The essential oil studied was similar to those found in several European countries and can be a valuable product for the small farmers from the Petrópolis region in Rio de Janeiro State.

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Chemical composition of Rhododendron aureum (Gold rosebay) essential oil from Pribaikal'e (Russian Federation)

Journal of the Serbian Chemical Society ◽

10.2298/jsc1002209o ◽

2010 ◽

Vol 75 (2) ◽

pp. 209-215 ◽

Cited By ~ 7

Author(s):

Daniil Olennikov ◽

Lubov' Dudareva ◽

Semion Osipenko ◽

Tat'yana Penzina

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Russian Federation ◽

Mass Spectra ◽

Retention Indices ◽

Chromatographic Retention ◽

Irkutsk Region ◽

Chromatographic Retention Indices ◽

Rhododendron Aureum

The essential oils from five samples of leaves of Rhododendron aureum from the Irkutsk region, Pribaikal'e, Russian Federation, were isolated by hydrodistillation and analyzed by a combination of GC and GC/MS. Compounds representing 70.5-78.3 % of the oils were identified. Twenty-seven compounds were identified according to their chromatographic retention indices and mass spectra. The major components of the oils were calarene (10.4- -66.4 %), ?-bourbonene (0.5-27.4 %), ?-selinene (2.1-8.0 %) and kaur-16-ene (2.0-6.3 %). It was found that the chemical composition of Rh. aureum essential oil depends on the altitude of the growing plants.

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Chemical Composition, Antibacterial and Antioxidant Activities of Thyme Essential Oil (<i>Thymus vulgaris</i>)

Food and Nutrition Sciences ◽

10.4236/fns.2018.95034 ◽

2018 ◽

Vol 09 (05) ◽

pp. 433-446 ◽

Cited By ~ 1

Author(s):

Hamad S. Aljabeili ◽

Hassan Barakat ◽

Hassan A. Abdel-Rahman

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Antioxidant Activities ◽

Thymus Vulgaris ◽

Thyme Essential Oil

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Chemical Composition and Antibacterial Activity of the Essential Oil of Baccharis latifolia Pers. and B. Prunifolia H. B. &K. (Asteraceae)

Natural Product Communications ◽

10.1177/1934578x0700201211 ◽

2007 ◽

Vol 2 (12) ◽

pp. 1934578X0700201 ◽

Cited By ~ 1

Author(s):

Janne Rojas ◽

Judith Velasco ◽

Luis B. Rojas ◽

Tulia Díaz ◽

Juan Carmona ◽

...

Keyword(s):

Staphylococcus Aureus ◽

Antibacterial Activity ◽

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Enterococcus Faecalis ◽

Mass Spectra ◽

Retention Indices ◽

Gram Positive ◽

Gram Positive Bacteria

The essential oils from leaves of Baccharis latifolia and B. prunifolia collected in January 2006 were analyzed by GC/MS. The yields of oils extracted by hydrodistillation were 0.27 and 0.29% for B. latifolia and B. prunifolia, respectively. Sixteen (B. latifolia) and twenty nine (B. prunifolia) components were identified by comparison of their mass spectra with the Wiley GC-MS Library data and by their retention indices (RI). The identified products may be divided into four different groups: monoterpenes (9.0% B. latifolia; 43.9% B. prunifolia), oxygenated monoterpenes (0.8% B. latifolia; 5.4% B. prunifolia), sesquiterpenes (20.4% B. latifolia; 45.9% B. prunifolia) and oxygenated sesquiterpenes (69.8% B. latifolia; 1.9% B. prunifolia). The oils showed antibacterial activity only against Gram positive bacteria, with MIC values for Staphylococcus aureus (ATCC 25923) of 80 μg/mL (B. latifolia) and Enterococcus faecalis (ATCC 29212) of 90 μg/mL and 260 μg/mL (B latifolia and B. prunifolia, respectively).

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Chemical Composition and Antioxidant Activity of the Essential Oil of Cardiospermum grandiflorum Sw Harvested in Kokumbo in Ivory Coast

International Research Journal of Pure and Applied Chemistry ◽

10.9734/irjpac/2021/v22i930432 ◽

2021 ◽

pp. 31-38

Author(s):

Konan N’dri Séraphin ◽

Yéo Sounta ◽

Angbeé Kassé Jean-Hugues ◽

Kouamé Bosson Antoine ◽

MamyrBékova-Békro Janat Akhanovna ◽

...

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

Essential Oil ◽

Vitamin C ◽

Mass Spectra ◽

Retention Indices ◽

Medicinal And Aromatic Plants ◽

Yellow Color ◽

Nist Database ◽

Oil Extract

Aims: The objective of this work is to contribute to the valorization of medicinal and aromatic plants of the Ivorian flora. We propose to determine the chemical composition and to evaluate the antioxidant activity by spectrophotometry of the essential oil of Cardiospermum. grandiflorum Sw Study Design: Valorization of aromatic and medicinal plants. Methodology: The technical of steam distillation using a four-compartment stainless steel device was used to extract the essential oil from the plant matrix. The analysis of the essential oils was carried out on a GC chromatograph (7890A, Agilent Technologies) coupled to a mass spectrometer (5975C, Agilent Technologies). The identification of the compounds was carried out by comparison of the retention indices and mass spectra obtained with those from the National Institute of Standards and Technology (NIST) database and from the literature The antioxidant potential of the extracts was evaluated using the Blois method. Results: The essential oil obtained by steaming, with an aromatic odor and pale yellow color has a yield of (0.0045 ± 0.0002)%. Analysis of the chromatogram and mass spectra obtained by GC-MS identified 24 phytocompounds representing 99.45% of the total chemical composition. The chemical composition of EO consists mainly of hydrocarbon sesquiterpenes (97.72%).The major compound is γ-muurolene (46.06%) (A) followed by β-Caryophyllene (24.35%) (B) and γ-elemene (7.07 %). The essential oil extract of C. grandiflorum exhibits low antioxidant activity compared to vitamin C. The IC 50 value of vitamin C is 0.31 µg / mL while that of EO extract of C grandiflorum is 15.1 µg / mL Conclusion: In the present study, we are interested in the valuation of Cardiospermum grandiflorum an aromatic plant used in traditional Ivorian medicine. The yields of essential oil is low. (24) phytocompounds were identified there. The essential oil has less antioxidant activity than that of vitamin C,

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Quantitative structure-gas chromatographic retention index relationship of long-chain esters: The case of Scandix pecten-veneris L. essential-oil constituents

Facta universitatis - series Physics Chemistry and Technology ◽

10.2298/fupct1602097m ◽

2016 ◽

Vol 14 (2) ◽

pp. 97-104 ◽

Cited By ~ 1

Author(s):

Marko Mladenovic ◽

Niko Radulovic

Keyword(s):

Essential Oil ◽

Retention Index ◽

Retention Indices ◽

Chromatographic Retention ◽

Retention Data ◽

Chromatographic Property ◽

Gas Chromatographic Retention Indices ◽

Chromatographic Retention Indices ◽

Relationship Of ◽

Long Chain

Motivated by a recent identification of two homologous series of branched butanoates and pentanoates in S. pecten-veneris essential oil, with an apparently regular change of their retention index (RI) values, we decided to examine the generality of such structure-chromatographic property relationship. Based on the experimentally obtained retention data (RI values of in total 20 compounds) of hexyl, decyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl, octadecyl, heneicosyl and tricosyl isobutanoates and 3-methylbutanoates and selected 2-methylbutanoates, a model was built up that correlates the total number of carbon atoms, Wiener (WI), Balaban (BI) and molecular topological (MTI) indices of the mentioned esters and their RI data (RI = 240.5 + 91.2 x C + 2.94 x WI + 4.6 x 10-5 x BI - 0.381 x MTI). The obtained equation represents a new and simple tool for the prediction of gas chromatographic (retention indices) data for esters of straight long-chain fatty alcohols and branched short aliphatic acids.

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Chemical Composition of the Essential Oil of Leaves and Roots of Ottoa oenanthoides (Apiaceae) from Mérida, Venezuela

Natural Product Communications ◽

10.1177/1934578x1000500728 ◽

2010 ◽

Vol 5 (7) ◽

pp. 1934578X1000500 ◽

Cited By ~ 1

Author(s):

Janne Rojas ◽

Alexis Buitrago ◽

Luis B. Rojas ◽

Antonio Morales ◽

Shirley Baldovino

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Mass Spectra ◽

Retention Indices ◽

Naphthalene Derivatives ◽

Leaves And Roots ◽

First Time

Essential oils extracted by hydrodistillation from leaves and roots of Ottoa oenanthoides Kunth (Apiaceae) were analyzed by GC/MS. The oils, obtained in yields of 0.10% and 0.66%, respectively, each contained four compounds, which were identified from their mass spectra and retention indices (RI). The major compound identified was 2-methoxy-8-methyl-1,4-naphthalindione (59.9% leaves, and 62.8%, roots), followed by 7-methoxy-1-naphthol (18.3% leaves and 17.3% roots), 2-naphthalenol (18.6% leaves and 15.0% roots), and 3-methoxy-2-naphthalenol (3.1% leaves and 2.1% roots). To the best of our knowledge, this is the first time that naphthalene derivatives have been reported for any species of the Apiaceae family.

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