scholarly journals EVALUATION OF THE CHEMICAL COMPOSITION AND ALLELOPATHIC POTENTIAL OF ESSENTIAL OILS FROM THREE SPECIES OF ASTERECEAE AGAINST SEED GERMINATION AND SEEDLING VIGOR OF LETTUCE

2015 ◽  
Vol 11 (6) ◽  
pp. 3669-3677
Author(s):  
Cíntia Alvarenga Santos Fraga de Miranda ◽  
Maria das Graças Cardoso ◽  
Maria Laene Moreira de Carvalho ◽  
Marcos De Sousa Gomes ◽  
Juliana De Andrade Santiago ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Seed Germination ◽  
Essential Oil ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Direct Contact ◽  
Chemical Compositions ◽  
Seedling Vigor ◽  
Allelopathic Potential ◽  
Asteraceae Family

The allelopathic properties of the essential oils have been exploited because they are biodegradable natural compounds that can be used in combination or as prototypes for new bioherbicides. The objectives of this study were to chemically characterize the essential oils from B. dracunculifolia, C. bonariesis and T. diversifolia and to evaluate their allelopathic potential. The essential oils were extracted by hydrodistillation and their chemical compositions were determined by GC-MS. Allelopathic activities were determined by methods that evaluate the effects of volatile compounds and direct contact of those compounds on the seed germination and seedling vigor of lettuce. The principal constituents of the essential oil from B. dracunculifolia were limonene, trans-nerolidol and β-pinene; those in the oil from C. bonariesis were limonene, trans-β-ocimene and cis-verbenol (4.4%); and those in the oil from T. diversifolia were β-pinene, α-pinene and limonene. Minor differences in the germination and vigor of lettuce seedlings were observed when they were exposed to the volatile essential oils from the leaves of the three species of the Asteraceae family. However, upon direct contact with these oils, those of C. bonariesis presented the greatest allelopathic potential, which was attributed to its higher content of oxygenated monoterpenes.

scholarly journals Comparison of chemical compositions of essential oils isolated by hydrodistillation from wild thyme (Thymus serpyllum L.) with use of Deryng and Clevenger apparatus

2014 ◽  
Vol 60 (2) ◽  
pp. 7-17 ◽  
Author(s):  
Aneta Wesołowska ◽  
Monika Grzeszczuk ◽  
Dorota Jadczak
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Methyl Ether ◽  
The Other ◽  
Chemical Compositions ◽  
Distillation Apparatus ◽  
Ms Analysis ◽  
Wild Thyme ◽  
Thymus Serpyllum

Abstract The aim of the studies conducted in 2012-2013 was to compare the chemical composition of essential oils isolated from wild thyme (Thymus serpyllum L.) by hydrodistillation in Deryng and Clevenger apparatus. GC-MS analysis of the isolated oils revealed that carvacrol (42.81-45.24%), γ-terpinene (7.68-9.04%), β-caryophyllene (5.28-9.10%), β-bisabolene (5.76-6.91%) and carvacrol methyl ether (4.92-6.09%) were the major components of all the samples. On the basis of the obtained data it was proved that the type of distillation apparatus had no significant effect on the content of the main essential oil constituents of wild thyme. However, based on the means for both years of the study it was proved that hydrodistillation in Deryng apparatus was more effective for carvacrol concentration, while in Clevenger apparatus - for y-terpinene and carvacrol methyl ether concentration. The type of distillation apparatus had no significant effect on the content of the other essential oil constituents.

scholarly journals Chemical Compositions of the Bark Essential Oils of Croton Monteverdensis and Croton Niveus from Monteverde, Costa Rica

2006 ◽  
Vol 1 (7) ◽  
pp. 1934578X0600100 ◽  
Author(s):  
William N. Setzer
Keyword(s):  
Costa Rica ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Chemical Compositions ◽  
Medicinal Uses ◽  
Oil Components

The essential oils of the barks of Croton monteverdensis Huft and C. niveus Jacq. (Euphorbiaceae) from Monteverde, Costa Rica, were isolated by hydrodistillation in yields of 0.03% and 0.10%, respectively. The chemical composition of the oils was determined by GC–MS. The most abundant essential oil components of C. monteverdensis were α-pinene (17.1%), β-pinene (10.5%), and linalool (8.3%), while C. niveus bark oil was made up largely of α-pinene (14.4%), 1,8-cineole (11.6%), and borneol (8.5%). The major components account for the fragrances and are consistent with the traditional medicinal uses of these plants.

scholarly journals Ginger and Turmeric Essential Oils for Weed Control and Food Crop Protection

Plants ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 59 ◽  
Author(s):  
María Ibáñez ◽  
María Blázquez
Keyword(s):  
Seed Germination ◽  
Essential Oil ◽  
Essential Oils ◽  
Mass Spectrometry Analysis ◽  
Chemical Compositions ◽  
Food Crops ◽  
Nicotiana Glauca ◽  
Radicle Growth ◽  
Food Ingredients ◽  
Positive Effects

Ginger and turmeric are two food ingredients that are in high demand due to their flavor and positive effects on health. The biological properties of these spices are closely related to the aromatic compounds they contain. The chemical compositions of their essential oils and their in vitro phytotoxic activity against weeds (Portulaca oleracea, Lolium multiflorum, Echinochloa crus-galli, Cortaderia selloana, and Nicotiana glauca) and food crops (tomato, cucumber, and rice) were studied. Forty-one compounds, accounting for a relative peak area of 87.7% and 94.6% of turmeric and ginger essential oils, respectively, were identified by Gas Chromatography–Mass Spectrometry analysis. Ginger essential oil with α-zingiberene (24.9 ± 0.8%), β-sesquiphelladrene (11.7 ± 0.3%), ar-curcumene (10.7 ± 0.2%), and β-bisabolene (10.5 ± 0.3%) as the main compounds significantly inhibited the seed germination of P. oleracea, L. multiflorum, and C. selloana at the highest dose (1 µL/mL) assayed, as well as the hypocotyl and radicle growth of the weeds. Turmeric essential oil with ar-turmerone (38.7 ± 0.8%), β-turmerone (18.6 ± 0.6%), and α-turmerone (14.2 ± 0.9%) as principal components significantly inhibited the seed germination of C. selloana and hypocotyl and radicle growth of weeds (the latter in particular) at the highest dose, whereas it did not affect either the seed germination or seedling growth of the food crops. Turmeric essential oil can be an effective post-emergent bioherbicide against the tested weeds without phytotoxicity to crops.

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

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.

scholarly journals Chemical composition, antimicrobial activity and chromosome number of Hertia cheirifolia L. from Algeria

2020 ◽  
Vol 7 (2) ◽  
pp. 31-43
Author(s):  
Ounoughi Abdelkader ◽  
Ramdani Messaoud ◽  
Lograda Takia ◽  
Chalard Pierre ◽  
Figueredo Gilles
Keyword(s):  
Antibacterial Activity ◽  
Chemical Composition ◽  
Chromosome Number ◽  
Essential Oil ◽  
Essential Oils ◽  
Diffusion Method ◽  
Chemical Compositions ◽  
Root Cells ◽  
Karyotypic Analysis ◽  
Germacrene D

AbstractThe aims of this work are to investigate the chemical composition, the antibacterial activity of the essential oil and the chromosome numbers of two populations of Hertia cheirifolia. The samples were collected in the flowering stage, in eastern Algeria locality. The aerial parts of H. cheirifolia were submitted to a hydro-distillation. GC and GC / MS analysed the chemical compositions of the obtained essential oils. The antibacterial activity of essential oils was evaluated using the disks diffusion method against ten bacterial strains. For karyotypic analysis, the squashing method is used. Fifty-eight compounds representing 98.93% of the total oil were identified in H. cheirifolia. The chemical composition is dominated by the presence of major products, α-pinene (48.49 - 53.85%) and Germacrene-D (2.64 - 12.66%). Two distinct chemical breeds were identified, the α-pinene-spathulenol of Batna population, and the α-pinene-germacrene-D of Setif population. The essential oil of H. cheirifolia has a moderate activity against bacteria tested. In contrast, the strains E. coli ATCC 25922, P. syringae ATCC 53543 and E. fecalis ATCC 49452 are resistant to H. cheirifolia essential oils. The observations of root cells meristematic at metaphase of H. cheirifolia gave a diploid chromosome number 2n = 2x = 20, with a basic chromosome number (x= 10).

scholarly journals Essential Oil of Algerian Eryngium campestre: Chemical Variability and Evaluation of Biological Activities

Molecules ◽  
2019 ◽  
Vol 24 (14) ◽  
pp. 2575 ◽  
Author(s):  
Medbouhi ◽  
Benbelaïd ◽  
Djabou ◽  
Beaufay ◽  
Bendahou ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Biological Activities ◽  
In Vitro Study ◽  
Chemical Compositions ◽  
Strong Activity ◽  
Chemical Variability ◽  
Main Component

The chemical composition of essential oils extracted from aerial parts of Eryngium campestre collected in 37 localities from Western Algeria was characterized using GC-FID and GC/MS analyses. Altogether, 52 components, which accounted for 70.1 to 86.8% of the total composition oils were identified. The main compounds were Germacrene D (0.4–53.4%), Campestrolide (1.6–35.3%), Germacrene B (0.2–21.5%), Myrcene (0.1–8.4%), α-Cadinol (0.2–7.6%), Spathulenol (0.1–7.6%), Eudesma-4(15)-7-dien-1-β-ol (0.1–7.6%) and τ-Cadinol (0.3–5.5%). The chemical compositions of essential oils obtained from separate organs and during the complete vegetative cycle of the plant were also studied. With the uncommon 17-membered ring lactone named Campestrolide as the main component, Algerian E. campestre essential oils exhibited a remarkable chemical composition. A study of the chemical variability using statistical analysis allowed the discrimination of two main clusters according to the geographical position of samples. The study contributes to the better understanding of the relationship between the plant and its environment. Moreover, the antimicrobial activity of the essential oil was assessed against twelve strains bacteria and two yeasts involved in foodborne and nosocomial infections using paper disc diffusion and dilution agar assays. The in vitro study demonstrated a strong activity against Gram-positive strains such as S. aureus, B. cereus, and E. faecalis. The cytotoxicity and antiparasitic activities (on Lmm and Tbb) of the collective essential oil and one sample rich in campestrolide, as well as some enriched fractions or fractions containing other terpenic compounds, were also analyzed. Campestrolide seems to be one compound responsible for the cytotoxic and antileishmanial effect, while myrcene or/and trans-β-farnesene have a more selective antitrypanosomal activity.

scholarly journals CHEMICAL COMPOSITION OF ESSENTIAL OILS AND ITS LOCOMOTOR ACTIVIT FROM THE BARKS OF Cinnamomum sintok Bl OF TWO DISTRICTS IN MIDDLE JAVA

2017 ◽  
Vol 10 (4) ◽  
pp. 84
Author(s):  
Muchtaridi Muchtaridi ◽  
Sri Sumiw ◽  
Rina F Nuwarda
Keyword(s):  
Mass Spectrum ◽  
Chemical Composition ◽  
Locomotor Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Steam Distillation ◽  
Methyl Eugenol ◽  
Linear Retention Index ◽  
Oil Components

Objective: The objective of this study was to determine of volatile compounds of essential oils from Cinnamomum sintoc B1 (sintok) barks belongs to Lauraceae of two Districts of Middle Java.Methods: Analysis of essential oil components from the barks of Cinnamomum sintoc Bl was performed by confirmation of the linear retention index (LRI), following by  the comparison of  NIST library peak and mass spectrum peak with literature data.Results: The essential oils from Yogyakarta and  Jember of Cinnamomum sintoc Bl obtained by steam distillation with percentage of  1.10% and 1.15% (w/w), respectively, with eugenol and methyl eugenol having higher percentage compare to other components, 35-38% and less than 10%, respectively. The sintok barks oil of Yogyakarta at 0.1 mL a dose decreased the locomotor activity as much as 11.33 %, while at 0.3 and 0.5 mL doses increased the locomotor activity as much as 35.83 % and 51.13 %.Conclusion: It can be concluded from this study that the inhalation of sintok barks oil gave different influence to locomotor activity depends on the doses given.Keywords: Cinnamomum sintoc Bl, methyl eugeunol, LRI, and eugenol 

scholarly journals Isolation Process and Compound Identification of Agarwood Essential Oils from Aquilaria crassna Cultivated at Three Different Locations in Vietnam

Processes ◽  
2019 ◽  
Vol 7 (7) ◽  
pp. 432 ◽  
Author(s):  
Dinh Thi Thu Thuy ◽  
Tran Thi Tuyen ◽  
Tran Thi Thu Thuy ◽  
Pham Thi Hong Minh ◽  
Quoc Toan Tran ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Essential Oil ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Chemical Compositions ◽  
Volatile Profile ◽  
Forest Land ◽  
Compound Identification ◽  
Aquilaria Crassna ◽  
Agarwood Oil

Agarwood and agarwood essential oils are commodities with great commercial value. In Vietnam, the agarwood industry has been growing, with more than 10,000 ha of forest land reserved for the cultivation of Aquilaria crassna, an agarwood-producing tree. The aim of this study was to present a hydrodistillation process to recover agarwood essential oil and to compare chemical compositions of agarwood samples harvested from various locations in Vietnam. Three agarwood samples representing products from A. crassna trees cultivated in the provinces of Bac Giang and Khanh Hoa, and on the Phu Quoc island (Kien Giang province) of Vietnam were subjected to hydrodistillation, resulting in essential oil yields of 0.32%, 0.27%, and 0.25% (w/w), respectively. Using GC–MS analysis, a total of 44 volatile compounds were identified in the obtained oils. Most of the constituents were oxygenated sesquiterpenes and had been previously found in other agarwood oil samples. Notable compounds of other chemical classes were aromatics and fatty acids. The three oil samples showed a common volatile profile, which is characterized by the dominance of eremophilane, agarofurans, and eudesmane sesquiterpenes, while vetispirane and guaiane sesquiterpenes were found in smaller quantities. Desired compounds, such as neopetasane (7.47–8.29%), dihydrokaranone (2.63–3.59%), β-agarofuran (3.04–6.18%), and agarospirol (2.98–3.42%), were present in substantial quantities, suggesting that the essential oils could be commercialized as fragrant materials of high value.

scholarly journals Essential Oil Profile of Vietnamese Callicarpa candicans (Burm. f.) Hochr

2020 ◽  
Vol 32 (7) ◽  
pp. 1630-1634
Author(s):  
Vu Thi Thu Le Vu Thi Thu Le ◽  
Lai Phuong Phuong Thao ◽  
Pham Thi Hong Minh ◽  
Hoang Thi Bich ◽  
Do Tien Lam ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Retention Indices ◽  
Chemical Compositions ◽  
Oil Performance

In this study, the essential oil profile of Callicarpa candicans (Burm. f.) Hochr was presented. Samples were collected from Vietnam and the oils were extracted from fresh leaves and dry leaves by hydrodistillation method. GC-MS data and retention indices were used to identify the chemical composition. The essential oil performance achieved 0.263% for fresh leaves and 1.503% for dry leaves. A total of 47 components were identified from fresh leaves oil and 39 constituents from dry leaves oil. Chemical compositions of the two essential oils were similar, with the major components being α-gurjunene, δ-cadinene, ε-caryophyllene (β-caryophyllene) and α-selinene.

scholarly journals Composición química y contenido de fenoles totales en aceites esenciales de muña Minthostachys setosa Briq Epl y anís Pimpinella anísum L.

2019 ◽  
pp. 107-111
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Volatile Compounds ◽  
Food Preparation ◽  
Natural Antioxidant ◽  
Total Phenols ◽  
Pimpinella Anisum ◽  
Minor Compounds

Composición química y contenido de fenoles totales en aceites esenciales de muña Minthostachys setosa Briq Epl y anís Pimpinella anísum L. Chemical composition and total phenols of essential oils from muña Minthostachys setosa Briq EPL and anise Pimpinella anisum L. Guadalupe Chaquilla Quilca, Waldir D. Estela Escalante, Vinicio Torres Muñoz, María de Lourdes Ballinas Casarrubias, María Guadalupe Gastélum Franco, Gpe. Virginia Nevárez-Moorillón Universidad Nacional Micaela Bastidas de Apurímac, Facultad de Ingeniería, EAP Ing. Agroindustrial. Av. Arenas 121 Abancay, Apurímac Perú. Universidad Autónoma de Chihuahua, Facultad de Ciencias Químicas, Circuito Universitario s/n, Nuevo Campus Universitario 31125 Chihuahua, Chih. México. DOI: https://doi.org/10.33017/RevECIPeru2011.0031/ RESUMEN Se ha determinado la composición química y el contenido de fenoles totales de los aceites esenciales extraídos de la muña (Minthostachys setosa Briq Epl) y anís (Pimpinella anísum L.) provenientes de la región Apurímac, Perú. Los análisis de GC-MS han reportado para el caso de la muña la presencia de 18 diferentes compuestos volátiles entre ellos isomentona 39%, pulegona 32%, isopulegona 6% y timol 5% principalmente. En el caso del anís se encontró principalmente anetol, 96% y otros componentes en menor cantidad. El contenido de fenoles totales se ha determinado por el método de Folin Ciocalteu y expresados como mg de ácido gálico/g aceite esencial. Los resultados obtenidos reportaron valores de 253.65 mg y 73.50 mg de ácido gálico/g de aceite para muña y anís respectivamente. A partir de estos resultados el aceite esencial de muña presenta una mejor actividad antioxidante y podría ser utilizado como antioxidante natural en la elaboración de alimentos. Descriptores: actividad antioxidante, fenoles totales, anís, muña. ABSTRACT The chemical composition and the content of total phenols present in essential oils extracted from muña (Minthostachys setosa Briq Epl) and anise (Pimpinella anísum L.) collected in the Apurimac region, Perú were determined. Analyses of GC-MS of the essential oil of muña has reported the presence of about 18 different volatile compounds such as isomentona 39%, pulegona 32%, isomentona 6% and timol 5%, whereas in case of anise it has been detected mainly anetol 96% and other minor compounds. The content of total phenols in samples was determined by the method of Folin Ciocalteu and expressed as mg gálic acid/g essential oil. Results showed that the content of total phenols in muña and anise were 253.65 mg y 73.50 mg gálic acid/g oil respectively. From these results, the essential oil of muña shows a better antioxidant activity and it could be used as a natural antioxidant in food preparation. Keywords: antioxidant activity, total phenols, anise, muña.

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