scholarly journals Acaricidal Activity against Tetranychus Urticae and Essential Oil Composition of Four Croton Species from Caatinga Biome in Northeastern Brazil

2011 ◽  
Vol 6 (6) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Ilzenayde Araújo Neves ◽  
Claudio Augusto Gomes da Camara
Keyword(s):  
Essential Oil ◽  
Tetranychus Urticae ◽  
Integrated Control ◽  
Essential Oil Composition ◽  
Acaricidal Activity ◽  
Northeastern Brazil ◽  
Volatile Components ◽  
Oil Composition ◽  
Main Compound ◽  
Caatinga Biome

Volatile components of essential oils from the leaves and stems of Croton jacobinensis, C. rhamnifolius, C. muscicapa and C. micans, which are medicinal plants found in the Caatinga biome of northeastern Brazil, were analyzed using GC and GC/MS. The acaricidal activity of these oils against Tetranychus urticae was evaluated using the fumigation method. Oil yields from the Croton species ranged from 1.1±0.0 to 0.6±0.0%, w/w, for leaves and 0.7±0.0 to 0.1±0.0% for stems. Sesquiterpenoids were dominant in all oils, except the stem oil from C. rhamnifolius, which exhibited a high monoterpene content, and the leaf and stem oils from C. muscicapa, which were rich in phenylpropanoids. The major volatile components of the leaf and stem oils from C. jacobinensis were ( Z)-α-atlantone (24.3±0.4%) and trans-isolongifolanone (22.8±0.5%), respectively. The most abundant constituents detected in C. rhamnifolius were #aL-cedrene epoxide (23.3±0.1%) and caryophyllene oxide (21.9±0.0%) in the leaf oil, and camphor (16.6±0.5%) and tricyclene (12.8±0.1%) in the stem oil. Foenicolin was the main compound identified in the leaf (50.6±0.2%) and stem (72.7±0.6%) oils of C. muscicapa, while α-bulnesene (32.9±0.2%) and guaiol (17.9±0.7%) were the principal components of C. micans oils. These oils exhibited a high degree of toxicity in the fumigation assay. The stem oils from C. jacobinensis and C. rhamnifolius exhibited high lethality rates, with LC50 values of 0.3 and 0.2 μL/L of air after 24 h, respectively. The results suggest the potential use of stem essential oil, especially from C. rhamnifolius and C. jacobinensis, for the integrated control of Tetranychus urticae.

scholarly journals Essential Oil Composition and Acaricidal Activity of Schinus Terebinthifolius from Atlantic Forest of Pernambuco, Brazil against Tetranychus Urticae

2012 ◽  
Vol 7 (1) ◽  
pp. 1934578X1200700 ◽  
Author(s):  
Aline Fonseca do Nascimento ◽  
Claudio Augusto Gomes da Camara ◽  
Marcílio Martins de Moraes ◽  
Clécio Souza Ramos
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Tetranychus Urticae ◽  
Atlantic Forest ◽  
Integrated Management ◽  
Essential Oil Composition ◽  
Acaricidal Activity ◽  
Repellent Activity ◽  
Oil Composition ◽  
Oil Repellent

The compositions of the essential oils from unripe (UFr) and ripe (RFr) fruits of Schnus terebinthifolius were analyzed by GC and GC/MS. The major compound identified in both oils was limonene (UFr = 44.1 ± 1.3%; RFr = 31.8 ± 1.2%), followed by α-phellandrene (15.7 ± 0.4%) in the UFr oil and thujene (21.7 ± 0.9%) in the RFr oil. Repellent and toxicity activities of the two oils were also evaluated, and the results compared with eugenol. The UFr oil was more active in the fumigation tests (LC50 = 1.46 μL/L of air), whereas the RFr oil was more active in the sealed dishes (SD) than open dishes (OD) contact assay (LC50 = 3.04 μL/cm2) and not significantly different from eugenol. Both oils exhibited significant repellent activity comparable with that of eugenol. The results suggest that the repellent activity of these oils in association with its toxicity could be a great advantage for the integrated management of T. urticae.

Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

2021 ◽  
Vol 1 (30) ◽  
pp. 34-38
Author(s):  
El Hanbali F Barrero A.F
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Gram Negative ◽  
Main Compound ◽  
Oxygenated Compounds ◽  
Aerial Parts

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.

scholarly journals Essential oil composition of Eugenia langsdorffii O. Berg.: relationships between some terpenoids and toxicity against Tetranychus urticae

2012 ◽  
Vol 23 (9) ◽  
pp. 1647-1656 ◽  
Author(s):  
Marcílio M. de Moraes ◽  
Claudio A. G. da Camara ◽  
Maria L. dos Santos ◽  
Christopher W. Fagg
Keyword(s):  
Essential Oil ◽  
Tetranychus Urticae ◽  
Essential Oil Composition ◽  
Oil Composition

Essential Oil Composition of two New Species of Phebalium (Rutaceae) from North-Eastern NSW, Australia

2009 ◽  
Vol 4 (7) ◽  
pp. 1934578X0900400
Author(s):  
Jesús Palá-Paúl ◽  
Lachlan M. Copeland ◽  
Joseph J. Brophy ◽  
Robert J. Goldsack
Keyword(s):  
Gas Chromatography ◽  
New Species ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Volatile Components ◽  
Oil Composition ◽  
Aerial Parts ◽  
Similar Chemical ◽  
North Eastern ◽  
Two New Species

The composition of the essential oil steam distilled with cohobation from the aerial parts of two new undescribed species of Phelabium, P. stellatum I. Telford & J.J. Bruhl ined. and P. sylvaticum I. Telford & J.J. Bruhl ined., has been analyzed by gas chromatography and gas chromatography coupled to mass spectrometry. Both species were found to have a similar chemical composition. The essential oil of P. stellatum was characterized by high amounts of elemol (24.6-30.8%), β-phellandrene (5.2-10.8%), β-eudesmol (6.1-10.0%), hedycaryol (4.5-9.8%), and δ-3-carene (4.4-13.7%). The main compounds of the samples of P. sylvaticum were identified as myrcene (10.6-23.0%), elemol (11.3-14.6%), β-phellandrene (0.5-14.8%), δ-3-carene (8.0-11.5%), β-eudesmol (6.7-9.1%), hedycaryol (7.4-9.7%) and α-pinene (7.1-8.9%). This is the first report of the volatile components of these two new species.

scholarly journals The Essential Oil Composition of Trachymene Incisa Rudge Subsp. Incisa Rudge From Australia

2021 ◽  
Author(s):  
Jesús Palá-Paúl ◽  
Lachlan M. Copeland ◽  
Joseph J. Brophy
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Major Fraction ◽  
Main Compound ◽  
Leaf Trichomes ◽  
Endemic Taxon

Trachymene incisa subsp. incisa is an Australian endemic taxon that varies greatly in the abundance and length of the leaf trichomes. The essential oil composition of five populations of this subspecies, three corresponding to the typical glabrous form and two of the particularly hairy variant, has been analyzed in an attempt to determinate if that variability is also reflected in their composition. The oils have been extracted by hydrodistillation and analysed by Gas Chromatography (GC) and Gas Chromatography coupled to Mass Spectrometry (GC-MS). The essential oils of T. incisa subsp. incisa were characterized by the high amount of sesquiterpenes that were the major fraction. The sesquiterepene hydrocarbons were significantly higher in the hairy variant in comparison to the glabrous one. According to the main compound three different chemotypes were found: I.- -selinene + bicyclogermacrene and II.- -bisabolene + -pinene for the typical glabrous variant and III.- bicyclogermacrene + -caryophyllene for the hairy variant.

Acaricidal Activity and Essential Oil Composition ofPetiveria alliaceaL. from Pernambuco (Northeast Brazil)

2011 ◽  
Vol 23 (1) ◽  
pp. 23-26 ◽  
Author(s):  
I. I. de A. Neves ◽  
C. A. G. da Camara ◽  
J. C. S. de Oliviera ◽  
A. V. de Almeida
Keyword(s):  
Essential Oil ◽  
Essential Oil Composition ◽  
Acaricidal Activity ◽  
Northeast Brazil ◽  
Oil Composition

scholarly journals Comparative Analysis of the Essential Oil Composition of Murraya Paniculata and M. exotica

2013 ◽  
Vol 8 (10) ◽  
pp. 1934578X1300801
Author(s):  
Hai-Ning Lv ◽  
Xiao-Yu Guo ◽  
Peng-Fei Tu ◽  
Yong Jiang
Keyword(s):  
Comparative Analysis ◽  
Essential Oil ◽  
Folk Medicine ◽  
Essential Oil Composition ◽  
Gas Chromatography Mass Spectrometry ◽  
Volatile Components ◽  
Oil Composition ◽  
Chemical Examination ◽  
Inflammatory Lesions ◽  
Murraya Paniculata

Murrayae Folium et Cacumen (MFC) is a traditional Chinese medicine (TCM) derived from the leaves and twigs of two aromatic species of Rutaceae: Murraya paniculata (L.) Jack and M. exotica L. It has long been used as a folk medicine in South China for the treatment of a variety of disorders, particularly for inflammatory lesions and pains. In the present study, a detailed chemical examination as well as a comparative analysis of the essential oil composition of M. paniculata and M exotica was conducted by gas chromatography-mass spectrometry (GC-MS). A total of 141 volatile components were identified from the essential oil of these two plants. Sesquiterpenes were found to be the predominant constituents, accounting for 92.8% of the oil from M paniculata and 87.9% of that from M. exotica. A comparative analysis of the essential oil composition of these two plants revealed a high level of similarity in their main constituents, such as the co-occurrence of E-caryophyllene, spathulenol and δ-elemene, which gave the chemical evidence for their equal medicinal application as MFC in TCMs. Moreover, in combination with literature reports, E-caryophyllene was theoretically deduced as one of the pharmacologically effective components of MFC that is responsible for treating inflammatory lesions and for local anaesthesia.

scholarly journals The Essential Oil Composition of Trachymene incisa Rudge subsp. incisa Rudge from Australia

Plants ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 601
Author(s):  
Jesús Palá-Paúl ◽  
Lachlan M. Copeland ◽  
Joseph J. Brophy
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Major Fraction ◽  
Main Compound ◽  
Leaf Trichomes ◽  
Endemic Taxon

Trachymene incisa subsp. incisa is an Australian endemic taxon that varies greatly in the abundance and length of the leaf trichomes. The essential oil composition of five populations of this subspecies, three corresponding to the typical glabrous form and two of the particularly hairy variant, has been analyzed in an attempt to determinate if that variability is also reflected in their composition. The oils have been extracted by hydrodistillation and analyzed by Gas Chromatography (GC) and Gas Chromatography coupled to Mass Spectrometry (GC–MS). The essential oils of T. incisa subsp. incisa were characterized by the high amount of sesquiterpenes that were the major fraction. The sesquiterepene hydrocarbons were significantly higher in the hairy variant in comparison to the glabrous one. According to the main compound, three different chemotypes were found: I.—β-selinene + bicyclogermacrene and II.—γ-bisabolene + α-pinene for the typical glabrous variant and III.—bicyclogermacrene + β-caryophyllene for the hairy variant.

scholarly journals Culture conditions and salt effects on essential oil composition of sweet marjoram (Origanum majorana) from Tunisia

2012 ◽  
Vol 62 (2) ◽  
pp. 251-261 ◽  
Author(s):  
Olfa Baâtour ◽  
Imen Tarchoune ◽  
Hela Mahmoudi ◽  
Nawel Nassri ◽  
Wissal Abidi ◽  
...  
Keyword(s):  
Essential Oil ◽  
Culture Conditions ◽  
Important Change ◽  
Essential Oil Composition ◽  
Volatile Components ◽  
Culture Chamber ◽  
Oil Composition ◽  
Salt Effects ◽  
Origanum Majorana ◽  
New Compounds

Culture conditions and salt effects on essential oil composition of sweet marjoram (Origanum majorana) from TunisiaO. majoranashoots were investigated for their essential oil (EO) composition. Two experiments were carried out; the first on hydroponic medium in a culture chamber and the second on inert sand in a greenhouse for 20 days. Plants were cultivated for 17 days in hydroponic medium supplemented with NaCl 100 mmol L-1. The results showed that theO. majoranahydroponic medium offered higher essential oil yield than that from the greenhouse. The latter increased significantly in yield (by 50 %) under saline constraint while it did not change in the culture chamber. Under greenhouse conditions and in the absence of salt treatment, the major constituents were terpinen-4-ol andtrans-sabinene hydrate. However, in the culture chamber, the major volatile components werecis-sabinene hydrate and terpinen-4-ol. In the presence of NaCl, new compounds appeared, such as eicosane, spathulenol, eugenol, and phenol. In addition, in the greenhouse, with or without salt, a very important change oftrans-sabinene hydrate concentration in EO occurred, whereas in the culture chamber change appeared incis-sabinene hydrate content.

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