The Chemical Composition of the Essential Oils from the Leaf, Stem-Bark and Twig of Terminalia mantaly  H. Perrier (Combretaceae) from Nigeria

The essential oils from the leaf, stem-bark and twig of Terminalia mantaly were isolated by hydrodistillation. The volatile oils analysed on Gas Chromatography (GC) and Gas Chromatography – Mass Spectrometer (GC - MS). The identified constituents were twelve, twenty-three and seventeen for the leaf, stem-bark and twig and accounted for 89.57%, 95.77%, 95.92% respectively. Hexahydrofarnesylacetone (30.05%) and Z-pinane (16.71%) were the main constituents in the leaf oil and nonanal (21.16%) and heptanal (10.57%) were principal component in the stem-bark volatile oil. Xylene isomers namely, meta and para (21.98%-23.56%) were the major components of the twig with substantial amount of nonanal (13.64%).

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Chemical composition and biological activities of leaf and fruit essential oils from Eucalyptus camaldulensis

Zeitschrift für Naturforschung C ◽

10.1515/znc-2016-0033 ◽

2017 ◽

Vol 72 (11-12) ◽

pp. 483-489 ◽

Cited By ~ 5

Author(s):

Gulden Dogan ◽

Nazan Kara ◽

Eyup Bagci ◽

Seher Gur

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oils ◽

Biological Activities ◽

Eucalyptus Camaldulensis ◽

Gas Chromatography Mass Spectrometry ◽

Diffusion Method ◽

Leaf Oil ◽

Fruit Oil ◽

Antibacterial And Antifungal

AbstractThe chemical composition of the essential oils from the leaves and fruit ofEucalyptus camaldulensisgrown in Mersin, Turkey was analyzed using gas chromatography (GC) and gas chromatography-mass spectrometry (GC-MS) techniques. The biological activities (antibacterial and antifungal) were examined using the agar well diffusion method. The main leaf oil constituents werep-cymene (42.1%), eucalyptol (1,8-cineole) (14.1%), α-pinene (12.7%) and α-terpinol (10.7%). The main constituents of the fruit oil were eucalyptol (1,8-cineole) (34.5%),p-cymene (30.0%), α-terpinol (15.1%) and α-pinene (9.0%). Our results showed that both types of oils are rich in terms of monoterpene hydrocarbons and oxygenated monoterpenes. The leaf and fruit essential oils ofE. camaldulensissignificantly inhibited the growth of Gram-positive (Staphylococcus aureusandBacillus subtilis) and Gram-negative (Escherichia coliandStreptococcussp.) bacteria (p<0.05). The oils also showed fungicidal activity againstCandida tropicalisandC. globrata. Leaf essential oils showed more activity than fruit essential oils, probably due to the higher p-cymene concentration in leaves.

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Chemical composition of the essential oils of four Polyalthia species from Malaysia

Zeitschrift für Naturforschung C ◽

10.1515/znc-2020-0097 ◽

2020 ◽

Vol 75 (11-12) ◽

pp. 473-478

Author(s):

Natasa Mohd Shakri ◽

Wan Mohd Nuzul Hakimi Wan Salleh ◽

Shamsul Khamis ◽

Nor Azah Mohamad Ali ◽

Shazlyn Milleana Shaharudin

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Folk Medicine ◽

Principal Component ◽

Gas Chromatography Mass Spectrometry ◽

Chemical Compositions ◽

Gastrointestinal Ulcer ◽

Germacrene D

AbstractPolyalthia is one of the largest genera in the Annonaceae family, and has been widely used in folk medicine for the treatment of rheumatic fever, gastrointestinal ulcer, and generalized body pain. The present investigation reports on the extraction by hydrodistillation and the composition of the essential oils of four Polyalthia species (P. sumatrana, P. stenopetalla, P. cauliflora, and P. rumphii) growing in Malaysia. The chemical composition of these essential oils was determined by gas chromatography (GC-FID) and gas chromatography-mass spectrometry (GC-MS). The multivariate analysis was determined using principal component analysis (PCA) and hierarchical clustering analysis (HCA) methods. The results revealed that the studied essential oils are made up principally of bicyclogermacrene (18.8%), cis-calamenene (14.6%) and β-elemene (11.9%) for P. sumatrana; α-cadinol (13.0%) and δ-cadinene (10.2%) for P. stenopetalla; δ-elemene (38.1%) and β-cubebene (33.1%) for P. cauliflora; and finally germacrene D (33.3%) and bicyclogermacrene for P. rumphii. PCA score and HCA plots revealed that the essential oils were classified into three separated clusters of P. cauliflora (Cluster I), P. sumatrana (Cluster II), and P. stenopetalla, and P. rumphii (Cluster III) based on their characteristic chemical compositions. Our findings demonstrate that the essential oil could be useful for the characterization, pharmaceutical, and therapeutic applications of Polyalthia essential oil.

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Correlation between Chemical Composition of Greek Essential Oils and their Antibacterial Activity against Food-borne Pathogens

Natural Product Communications ◽

10.1177/1934578x0700200413 ◽

2007 ◽

Vol 2 (4) ◽

pp. 1934578X0700200 ◽

Cited By ~ 4

Author(s):

Nikos G. Chorianopoulos ◽

Epameinontas T. Evergetis ◽

Nektarios Aligiannis ◽

Sofia Mitakou ◽

George-John E. Nychas ◽

...

Keyword(s):

Gas Chromatography ◽

Antibacterial Activity ◽

Chemical Composition ◽

Essential Oils ◽

Salmonella Enteritidis ◽

Principal Component ◽

Antibacterial Activities ◽

Gas Chromatography Mass Spectrometry ◽

Food Borne

The compositions of forty-nine essential oils obtained from plants growing in areas of biodiversity in Greece were determined by means of gas chromatography and gas chromatography–mass spectrometry. The in vitro antibacterial activities of the oils were evaluated against a panel of five common food-borne bacteria ( Escherichia coli 0157:H7 NCTC 12900, Salmonella Enteritidis PT4, Staphylococcus aureus ATCC 6538, Listeria monocytogenes Scott A and Bacillus cereus FSS 134). Monoterpene hydrocarbons, phenolic monoterpenes and alcohols were the major constituents of the oils, but their concentrations varied greatly between the samples examined. The essential oils obtained from the species endemic to Greece ( Satureja and Origanum) had the most potent bactericidal properties. The chemical composition data were statistically processed through Principal Component Analysis (PCA) and correlated with the antibacterial activities, allowing a rough estimation of the potential of the essential oils antibacterial activity.

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Chemical Composition of Essential Oils from the Leaves of Syzygium Bullockii and Syzygium Tsoongii in Ke Go Nature Reserve, Ha Tinh Province

VNU Journal of Science Natural Sciences and Technology ◽

10.25073/2588-1140/vnunst.4999 ◽

2021 ◽

Vol 37 (2) ◽

Author(s):

Tran Hau Khanh ◽

Pham Hong Ban ◽

Tran Minh Hoi

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oil ◽

Essential Oils ◽

Nature Reserve ◽

Chemical Compositions ◽

Flame Ionization ◽

Leaf Oil ◽

Total Composition ◽

First Time

Chemical composition of essential oils obtained from the leaf of Syzygium bullockii and Syzygium tsoongii were reported, corresponding oil content 0,36% and 0,27%. The analysis was performed by means of gas chromatography-flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC-MS). Twenty-seven components were identified in leaf oil of Syzygium bullockii, which represented about 76,75% of the total composition of the oil and six components were not identified, which represented 15,72%. The major constituents of the essential oil were (E)-caryophyllene (49,65%), spathulenol (4,29%), caryophyllene oxide (4,14%), bicyclogermacrene (3,35%), 2-tridecanone (3,25%). Fourty-six components were identified in leaf oil of Syzygium tsoongii, which presented about 99.71% of the total composition of the oil. The major constituents of the essential oil were E-caryophyllene (23,40%), bicyclogermacrene (21,23%), (Z)-β-ocimene (10,61%), α-humulene (6,33%), (E)-β-ocimene (4,99%). For the first time, the chemical compositions of the essential oils of Syzygium bullockii and Syzygium tsoongii from Vietnam were being reported.

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Comparison of the Chemical Composition of Essential Oils Isolated from Two Thyme (Thymus vulgaris L.) Cultivars

Notulae Botanicae Horti Agrobotanici Cluj-Napoca ◽

10.15835/nbha47311451 ◽

2019 ◽

Vol 47 (3) ◽

Cited By ~ 4

Author(s):

Aneta WESOLOWSKA ◽

Dorota JADCZAK

Keyword(s):

Mass Spectrometry ◽

Gas Chromatography ◽

Chemical Composition ◽

Essential Oils ◽

Gas Chromatography Mass Spectrometry ◽

Thymus Vulgaris ◽

Digital Object Identifier ◽

Digital Object ◽

Volatile Oils ◽

Main Components

In the studies conducted in 2016-2017, the chemical composition of the essential oils isolated from the herb of two thyme (Thymus vulgaris L.) cultivars was investigated by gas chromatography-mass spectrometry (GC-MS). The GC-MS analyses of the volatile oils of T. vulgaris L. cv. ‘English Winter’ and cv. ‘Summer Thyme de Provence’ led to the identification of 80 and 73 constituents, respectively. The main components found in the oil of ‘English Winter’ cultivar were thymol (44.97 and 38.06% in 2016 and 2017, respectively), p-cymene (7.61 and 10.34%), γ-terpinene (7.08 and 6.66%) and carvacrol (5.11 and 8.27%). Similarly, thymol (36.82 and 37.32%), p-cymene (15.73 and 11.20%), γ-terpinene (5.34 and 11.09%) and carvacrol (6.50 and 5.35%) dominated in the essential oil of ‘Summer Thyme de Provence’ cultivar. However, the higher content of thymol was noted for cultivar ‘English Winter’, while cultivar ‘Summer Thyme de Provence’ was richer in p-cymene. ********* In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. It will receive pagination when the issue will be ready for publishing as a complete number (Volume 47, Issue 3, 2019). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue. *********

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Effect of natural and artificial drying of leaf biomassof Psidium guajava on the content and chemical composition of essential oil

Semina Ciências Agrárias ◽

10.5433/1679-0359.2016v37n5p3059 ◽

2016 ◽

Vol 37 (5) ◽

pp. 3059 ◽

Cited By ~ 2

Author(s):

Elizabeth Aparecida Josefi da Silva ◽

Vanessa Paula da Silva ◽

Cassia Cristina Fernandes Alves ◽

José Milton Alves ◽

Edson Luiz Souchie ◽

...

Keyword(s):

Gas Chromatography ◽

Chemical Composition ◽

Essential Oil ◽

South America ◽

Essential Oils ◽

Mass Spectrometer ◽

Oil Content ◽

Psidium Guajava ◽

Drying Method ◽

Guava Leaves

Psidium guajava L. is native to Central and South America. It is widely distributed and well adapted to Brazil, a producer of essential oils rich in terpenes. The objective of this study was to evaluate the effects of natural and artificial drying on the content and chemical composition of the essential oil of guava leaves (Psidium guajava L.) grown in Rio Verde (GO). The two treatments consisted of drying fresh leaves either naturally in the shade or artificially at 40°C. Chemical composition was analyzed qualitatively and quantitatively by gas coupled with mass spectrometer chromatography (GC/MS) and gas chromatography using a flame ionizer (GC-FID), respectively. The method of drying changed the content and chemical composition of the essential oil of guava leaves. Drying in the shade reduced the content and altered the constituents of the essential oil, whereas drying in an oven at 40°C, despite having reduced the amounts of the constituents, exhibited the highest essential oil content and increased the concentration of certain major constituents as compared to that in the natural shade drying method. The major components found in the essential oil of leaves regardless of the drying processes were trans-caryophyllene, ?-humulene, aromadendrene, ?-selinene, and selin-11-en-4?-ol. According to reports in the literature, these compounds possess fungicidal, insecticidal, antimicrobial, and anti-inflammatory activity, among others beneficial actions.

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The Composition of Essential Oils Obtained from Achillea millefolium and Matricaria chamomilla L., Originary from Romania

Revista de Chimie ◽

10.37358/rc.17.12.5979 ◽

2018 ◽

Vol 68 (12) ◽

pp. 2787-2795 ◽

Cited By ~ 1

Author(s):

Mariana Daniela Berechet ◽

Elena Manaila ◽

Maria Daniela Stelescu ◽

Gabriela Craciun

Keyword(s):

Gas Chromatography ◽

Fourier Transform ◽

Infrared Spectroscopy ◽

Chemical Composition ◽

Essential Oils ◽

Fourier Transform Infrared Spectroscopy ◽

Mass Spectrometer ◽

Fourier Transform Infrared ◽

Achillea Millefolium ◽

Matricaria Chamomilla

In the present study we have investigated the chemical composition of the essential oils extracted by the procedure of hydrodistillation, from fresh flowers of Matricaria Chamomilla L. and Achillea Millefolium from Romania, two genres belonging to the same family, Asteraceae. The obtained essential oils were analyzed using the techniques of Gas Chromatography coupled with Mass Spectrometer and Fourier Transform Infrared Spectroscopy. It was found that both essential oils were dominated by the presence of terpenes. Aliphatic components were modest represented in both essential oils. The results were compared with those reported by other authors. Similarities consist in the domination of the same class of compounds and in the same modest representation of others. One of differences consists in the presence of some compounds with significant medicinal role, which were not reported by other authors. Another difference consists in the presence of some compounds in higher concentrations than those reported by other authors.

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Composition and Chemical Variability of Myrtus communis Leaf Oil From Northwestern Algeria

Natural Product Communications ◽

10.1177/1934578x19850030 ◽

2019 ◽

Vol 14 (5) ◽

pp. 1934578X1985003

Author(s):

Chahrazed Bekhechi ◽

Charaf Eddine Watheq Malti ◽

Maghnia Boussaïd ◽

Imane Achouri ◽

Karima Belilet ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oils ◽

Biological Activities ◽

Principal Component ◽

Hierarchical Cluster ◽

Retention Indices ◽

Resonance Spectroscopy ◽

Myrtus Communis ◽

Leaf Oil ◽

Pharmaceutical Industries

Myrtus communis L. is a shrub growing wild in most countries all around the Mediterranean Sea and myrtle leaf oil is useful in the perfumery and pharmaceutical industries. Nowadays, “chemotyped” essential oils are more and more appreciated. Myrtle oil from eastern and central-north Algeria belong to the “α-pinene-cineole” chemotype. In contrast, Moroccan myrtle oil displayed appreciable content of myrtenyl acetate. Therefore, it appeared crucial to investigate the composition of myrtle leaf oil from northwestern Algeria in order to ensure the homogeneity of the composition of Algerian myrtle leaf oil. The chemical composition of 42 oil samples of M. communis isolated from leaves collected in five locations from Tlemcen Province was investigated by gas chromatography (GC) in combination with retention indices, GC-mass spectroscopy, and 13C nuclear magnetic resonance spectroscopy. Yields ranged between 0.13% and 1.04% (w/w). The chemical composition of the oils was largely dominated by monoterpene hydrocarbons, with α-pinene (24.3-59.0%) and 1,8-cineole (13.2-49.5%) being the major compounds followed by limonene (3.2-19.8%). The 42 compositions were submitted to statistical analyses. The combination of hierarchical cluster analysis and principal component analysis allowed the distinction of two groups, the second group being subdivided into two subgroups. Groups and subgroups were differentiated with respect to their contents of α-pinene and 1,8-cineole and, to a lesser extent, of limonene. This study ensures that Algerian myrtle leaf oil belongs to the “α-pinene-cineole” chemotype which displays various biological activities. The observed homogeneity could be a positive point to join the international market of essential oils.

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VOLATILE COMPONENTS OF ONCOBA SPINOSA LEAF AND MORUS MESOZYGIA LEAF AND STEM BARK

Southern Brazilian Journal of Chemistry - Southern Brazilian Journal of Chemistry, Volume 28, No. 28, 2020 ◽

10.48141/sbjchem.v23.n23.2015.26_revista2015.pdf ◽

2015 ◽

Vol 23 (23) ◽

pp. 23-35

Author(s):

S. A. Aboaba ◽

O. Adeeko

Keyword(s):

Mass Spectrometry ◽

Gas Chromatography ◽

Essential Oils ◽

Stem Bark ◽

Volatile Components ◽

Caryophyllene Oxide ◽

Leaf Oil ◽

Total Oil

The essential oils of Oncoba spinosa leaf and Morus mesozygia leaf and stem bark were extracted using hydrodistillation and analyzed by means of Gas chromatography (GC) and GC coupled with mass spectrometry (GC-MS). The yields of the essential oils were; 0.50 %, 0.165 %, and 0.456 % respectively for Oncoba spinosa leaf, Morus mesozygia leaf, and stem oil. A total of twenty-eight, thirty-four and twenty compounds representing 92.0%, 92.0%, and 96.9% of the total oil contents were identified, respectively from the leaf of O. spinosa, leaf, and stem oil of M. mesozygia. Leaf oil of O. spinosa contained linalool (22.1 %), ȕ – caryophyllene (18.7 %), caryophyllene oxide (10.6 %) and pentadecanal (5.6 %) as the main constituents. M. mesozygia leaf oil was dominated with ȕ – elemene (11.7 %), (E) –ȕ- ionone (12.4 %), Į- selinene (5.1 %), germacrene A (6.0 %), į – cadinene (4.7 %) and spathulenol (7.4 %) while M. mesozygia stem oil had 2 –dodecanone (77%) and hexahydrofarnesylacetone (13 %) as its main constituents.

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