scholarly journals Chemical Composition and Trypanocidal Activity of the Essential Oils from Hedychium coronarium J. Koenig (Zingiberaceae)

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Danilo Fernando Rodrigues ◽  
Angela María Arenas Velásquez ◽  
Carlos Cavaleiro ◽  
Lígia Salgueiro ◽  
Gilmárcio Zimmermann Martins ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Chemical Composition ◽  
Essential Oils ◽  
Trypanosoma Brucei ◽  
Mass Spectroscopy ◽  
Colorimetric Method ◽  
Caryophyllene Oxide ◽  
Trypanocidal Activity ◽  
Hedychium Coronarium ◽  
Gas Chromatography Mass Spectroscopy

The composition of the essential oils (EO) from leaves and rhizomes of Hedychium coronarium was analyzed both by gas chromatography and gas chromatography-mass spectroscopy. Thirty and thirty-nine compounds were identified, respectively, in the oils from leaves and rhizomes, representing 88% and 86.1% of the whole compositions. Caryophyllene oxide is the major component in rhizomes while 1,8-cineole predominates in leaves oil. Essential oils and major components were tested for trypanocidal activity using procyclic forms of Trypanosoma brucei (427 and 29-13 strains). The cytotoxicity index (CI50), using the MTT colorimetric method, showed that essential oils and 1,8-cineole were inactive (>100 μg·mL−1. Nevertheless, caryophyllene oxide revealed a remarkable activity against both T. brucei strains (CI50 = 65.77 μg·mL−1 and 24.53 μg·mL−1, resp.), and the synergism between caryophyllene oxide plus pentamidine (1 : 1, v/v) highly increased the trypanocidal activity (<1.0 μg·mL−1).

scholarly journals Essential oils of leaves and rhizomes of Kaempferia galanga Linn.

2013 ◽  
pp. 65-76
Author(s):  
Md Nazrul Islam Bhuiyan ◽  
Jaripa Begum ◽  
MN Anwar
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Ethyl Ester ◽  
Mass Spectroscopy ◽  
Caryophyllene Oxide ◽  
Kaempferia Galanga ◽  
Propenoic Acid ◽  
Leaf Oil ◽  
Gas Chromatography Mass Spectroscopy ◽  
Main Components

Kaempferia galanga Linn. leaf and rhizome oils, obtained by hydrodistillation, were analyzed by gas chromatography mass spectroscopy (GC-MS). One hundred and eight components were identified in the leaf oil. The major components were linoleoyl chloride (21.42%), caryophyllene oxide (11.75%), cubenol (9.66%) and caryophyllene (5.60%). Eighty one components were identified in rhizome oil with the main components being 2-propenoic acid, 3-(4-methoxyphenyl),-ethyl ester (63.36%), ethyl cinnamate (6.31%), 4-cyclooctene -1-methanol (4.61%), caryophyllene oxide (4.37%) and limonene (3.22%). The compositions of both oils varied qualitatively and quantitatively. DOI: http://dx.doi.org/10.3329/cujbs.v3i1.13407 The Chittagong Univ. J. B. Sci.,Vol. 3(1&2):65-76, 2008

scholarly journals Chemical Composition and Antibacterial Activities of Eight Plant Essential Oils from Morocco against Escherichia coli Strains Isolated from Different Turkey Organs

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Hassna Jaber ◽  
Asmaa Oubihi ◽  
Imane Ouryemchi ◽  
Rachid Boulamtat ◽  
Ali Oubayoucef ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gas Chromatography ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectroscopy ◽  
Plant Essential Oils ◽  
E Coli ◽  
Gas Chromatography Mass Spectroscopy

The aim of the present study was to determine the chemical composition of eight plant essential oils and evaluate their antibacterial activity against Escherichia coli strains isolated from different turkey organs. The essential oils were extracted by hydrodistillation and analyzed using gas chromatography-mass spectroscopy. All essential oil yielded high in a range between 2.2 and 3.12%. Gas chromatography-mass spectroscopy (GC-MS) revealed that the major constituents of Thymus vulgaris, Ocimum basilicum, Artemisia herba-alba, and Syzygium aromaticum oils were thymol (41.39%), linalool (37.16%), camphor (63.69%), and eugenol (80.83%), respectively. Results of the E. coli sensitivity evaluated by the standard antimicrobial sensitivity method varied depending on the organ of isolation. Similarly, the essential oils antimicrobial activity determined by the disc diffusion method varied all along within the organs of isolation. T. vulgaris essential oil showed the highest effective antibacterial activity against E. coli isolated from the throat with an inhibition zone diameter value of up to 23.33 mm. However, all the essential oils showed antibacterial activity and the MIC and MBC values were in the range of 1/3000 to 1/100 (v/v) and the ratios MBC/MIC were equal to 1. In conclusion, this study showed that the essential oils could be promising alternatives to overcome E. coli multiresistance in turkey.

scholarly journals Constituents of Peel and Leaf Essential Oils of Citrus Medica L

2009 ◽  
Vol 1 (2) ◽  
pp. 387-392 ◽  
Author(s):  
M. N. I. Bhuiyan ◽  
J. Begum ◽  
P. K. Sardar ◽  
M. S. Rahman
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectroscopy ◽  
Chemical Constituents ◽  
Citrus Medica ◽  
Leaf Oil ◽  
Gas Chromatography Mass Spectroscopy ◽  
Total Oil ◽  
Peel Oil

The chemical constituents of leaf and peel essential oil of Citrus medica L. were analysed by gas chromatography mass spectroscopy (GC-MS). Nineteen components accounting for 99.9% of the oil were identified in leaf oil. The major constituents are erucylamide (28.43%), limonene (18.36%) and citral (12.95%). The peel oil contains forty three components accounting for 99.8% of the total oil and the major components are isolimonene (39.37%), citral (23.12%) and limonene (21.78%). Keywords: Citrus medica; Essential oils; GC-MS; Erucylamide; Isolimonene. © 2009 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.DOI: 10.3329/jsr.v1i2.1760   

scholarly journals Composition of Essential Oils in Turmeric Rhizome

2016 ◽  
Vol 16 (1) ◽  
pp. 87-94 ◽  
Author(s):  
Laxmi Devkota ◽  
Meena Rajbhandari
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Thin Layer ◽  
Quantitative Determination ◽  
Essential Oils ◽  
Colorimetric Method ◽  
Acetone Extract ◽  
Caryophyllene Oxide ◽  
Finger Printing

Turmeric has been recognized as a pharmaceutical crop. It is valuable primarily for essential oil and curcumin content. Chemical composition of the essential oils obtained from the rhizome of turmeric was determined by GC/MS technique. More than 75 compounds were detected and 67 of them were identified. They accounted for 98.59% of essential oil. The essential oil contained 15 monoterpenes (5.58%), 43 sesquiterpenes (84.37%) and 10 nonterpenic components (8.64%). The major constituents were ß-turmeron, a-turmeron, Epi-a-patschutene, ß-sesquiphellandrene, 1,4-dimethyl-2-isobutylbenzene, (±)-dihydro-ar-turmerone, zingiberene, E-a-atlantone and (-)-caryophyllene oxide. Thin layer chromatographic finger printing and quantitative determination of phenolics in acetone extract of commercially available turmeric samples were carried out using Folin-Ciocalteu colorimetric method. Gallic acid was used as the standard for the estimation of phenolics. All the investigated turmeric extracts contained relatively high amount of phenolics.Nepal Journal of Science and Technology Vol. 16, No.1 (2015) pp. 87-94

scholarly journals Analysis of white pepper essential oil components using gas chromatography-mass spectroscopy

2021 ◽  
pp. 230-234
Author(s):  
Purwaniati ◽  
Gilang Eka Permana ◽  
Indro Pamudjo
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectroscopy ◽  
White Pepper ◽  
Oil Components ◽  
Gas Chromatography Mass Spectroscopy

Introduction: White pepper is an important commodity used to produce essential oils. Differences in the oil components are determined by which region the peppers used were sourced from. Objectives: The aim of this study was to analyse the components of the essential oils produced by white peppers from different regions and to examine the specificity of these peppers. Methods: This analysis was carried out using the chromatography gas – mass spectroscopy (GC-MS) method on essential oil samples made from peppers obtained from the Java, Sumatera, Kalimantan, and Sulawesi Islands. Results: The results showed that white pepper essential oil contains 22 components, and that α-pinene, ꞵ–pinene, ∆-carene, sabinene, dl-limonene, and caryophyllene were major compounds within the oils. Furthermore, it showed that α-pinene, sabinene, and caryophyllene compounds were most found in samples from the Kalimantan, Sumatra, and Sulawesi Islands respectively. Meanwhile, those from Java Island contained ꞵ – pinene, ∆-carene, and caryophyllene in similar quantities.

scholarly journals Chemical Compositions and Tyrosinase Activity of the Essential Oils of Alpinia aquatica

2018 ◽  
Vol 13 (6) ◽  
pp. 1934578X1801300 ◽  
Author(s):  
Nissha Bharrathi Romes ◽  
Norazah Basar ◽  
Hasnah M. Sirat ◽  
Siti Ernieyanti Hashim ◽  
Zaini Asim
Keyword(s):  
Gas Chromatography ◽  
Essential Oils ◽  
Mass Spectroscopy ◽  
Capillary Gas Chromatography ◽  
Chemical Compositions ◽  
Inhibition Activity ◽  
Tyrosinase Inhibition ◽  
Germacrene D ◽  
Leaf Oil ◽  
Gas Chromatography Mass Spectroscopy

The essential oils obtained from the fresh rhizome, leaf, and pseudostem of Alpinia aquatica Roscoe. were hydrodistillated and analyzed using capillary gas chromatography (GC) and gas chromatography-mass spectroscopy (GC-MS). β-Pinene (11.7%), α-humulene (8.9%), aromadendrene (8.7%), and sabinene (7.7%) were the major components in the rhizome oil. The most abundant components of the leaf oil were germacrene D (21.3%), β-pinene (15.6%) and sabinene (12.1%), while α-humulene (19.8%), germacrene D (15.2%) and β-caryophyllene (8.7%) were the main constituents in the pseudostem oil. Antityrosinase assay revealed that all the three essential oils exhibited weak tyrosinase inhibition activities. The rhizome oil showed the highest inhibition activity with the value of 9.5% for the L-DOPA oxidation.

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