scholarly journals Chemical composition, antimicrobial and antioxidant activity of the essential oil of leaves of Eugenia involucrata DC.

2020 ◽  
Vol 36 (2) ◽  
Author(s):  
Adrieli Gorlin Toledo ◽  
Juliete Gomes de Lara de Souza ◽  
Jéssica Patrícia Borges da Silva ◽  
Wagner Alex Jann Favreto ◽  
Willian Ferreira da Costa ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antioxidant Potential ◽  
Gram Positive Bacteria ◽  
Dpph Method ◽  
Germacrene D ◽  
Antimicrobial And Antioxidant Activity ◽  
Reduction Capacity

In the Myrtaceae family, the species Eugenia involucrata DC., popularly known as "cerejeira-do-mato", is traditionally used for the antidiarrheal and digestive action of its leaves. However, no studies were found in the literature regarding its antimicrobial and antioxidant potential. In this context, the objective of the present study was to determine the chemical composition by gas chromatography coupled to mass spectrometry (GC-MS) to evaluate the antimicrobial activity by the broth microdilution technique and the antioxidant activity by the 2,2-diphenyl-1-picryl-hydrazila (DPPH) method of the essential oil of E. involucrata leaves. GC-MS identified 28 compounds, all sesquiterpenes, corresponding to 89.41% of the essential oil. The antimicrobial activity of the essential oil was observed for all Gram-positive bacteria tested (Staplylococcus epidermidis, Enterococcus faecalis, Bacillus subtilis and Staplylococcus aureus) and for yeast Candida albicans. The essential oil presented a reduction capacity of DPPH up to 66.81%, evidencing its antioxidant potential. It is suggested that the antimicrobial and antioxidant action of E. involucrata essential oil is related to the presence of the major compounds, elixene (26.53%), β-caryophyllene (13.16%), α-copaene (8.41%) and germacrene D (7.17%).

Chemical Composition and Antimicrobial Activity of Teucrium Capitatum L. Subsp. Lusitanicum (Schreb.) T. Navarro & Rosua Essential Oil

2020 ◽  
Author(s):  
Haïfa Debbabi ◽  
Ridha El Mokni ◽  
Ibrahim Jlassi ◽  
Rajesh K Joshi ◽  
Saoussen Hammami
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antimicrobial Properties ◽  
Significant Activity ◽  
Bacterial Strains ◽  
Gram Positive Bacteria ◽  
Sesquiterpene Hydrocarbons ◽  
Germacrene D

Abstract Chemical composition and antimicrobial activity of Teucrium capitatum L. subsp. lusitanicum essential oil was investigated for the first time in the present study. Qualitative and quantitative analyses of the chemical composition by gas chromatography and mass spectrometry (GC–FID and GC–MS) revealed the presence of 60 compounds representing 97.6% of the whole constituents. The main compounds were germacrene D (47.1%), spathulenol (5.8%), α-selinene (5.3%), germacrene A (2.9%), δ-cadinene (2.8%) and cubenol (2.7%). In vitro, the antimicrobial activity was investigated against five bacterial strains along with the yeast Candida albicans using broth microdilution assay. T. capitatum subsp. lusitanicum essential oil showed significant activity against the gram-positive bacteria Staphylococcus aureus (MIC = MBC = 78 μg mL−1), Bacillus subtilis (MIC = MBC = 156 μg mL−1) and the yeast C. albicans (MIC = MFC = 156 μg mL−1). The great potential of antimicrobial effects is most likely due to the very high percentage of sesquiterpene hydrocarbons particularly to germacrene D, for which the antimicrobial properties have been previously reported.

scholarly journals Essential Oil Composition and Antimicrobial Activity of Ballota nigra L. ssp Foetida

2009 ◽  
Vol 4 (4) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Daniele Fraternale ◽  
Anahi Bucchini ◽  
Laura Giamperi ◽  
Donata Ricci
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Caryophyllene Oxide ◽  
Oil Composition ◽  
Gram Negative ◽  
Gram Positive Bacteria ◽  
Aerial Parts ◽  
Germacrene D

The chemical composition of the essential oil of Ballota nigra L. ssp foetida obtained from the flowering aerial parts was analyzed by GC/MS. From the 37 identified constituents of the oil, β-caryophyllene (20.0%), germacrene D (18.0%) and caryophyllene oxide (15.0%) were the major components. The oil was active against both Gram-negative and Gram-positive bacteria as well as against three Candida species.

Evaluation of antioxidant and antimicrobial activity of Ziziphora ‎clinopodiodes essential oil eluted at different times

2020 ◽  
Vol 16 ◽  
Author(s):  
Mojgan Alizadeh ◽  
Akram Arianfar ◽  
Ameneh Mohammadi
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Essential Oil ◽  
Essential Oils ◽  
Antioxidant Activities ◽  
Positive Control ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Citronellic Acid ◽  
Antimicrobial And Antioxidant Activity

Objective: Ziziphora clinopodioides is an edible medicinal plant belongs to the Labiatae family that widespread all over Iran. It used as culinary and also in cold and cough treatments in Iran. The aim of present work was to evaluate the effect of different timeframes during the hydrodistillation on essential oil composition, antimicrobial and antioxidant activity. Materials and Methods: The essential oil of Z. clinopodiodes was extracted via hydrodistillation with Clevenger apparatus. The fractions of essential oil were captured at 6 times from the beginning of the distillation: (10, 20, 60, 120, 180 and 240 min). The fractions of essential oil were analyzed by GC/MS and their antibacterial, antifungal and antioxidant activities were studied by Disk - well diffusion and DPPH methods respectively. Results: Six distillation times and whole essential oil were captured during the hydrodistillation. Essential oil yield dropped off significantly during distillation progressed (1.0% for 10 min and 0.025 for 240 min). 1,8 Cineol, Isomenthone, Pulegone, Piperitenone and Citronellic acid were major compounds in fractions and they were affected by distillation times. Pulegone was major compound in all of essential oils. In antioxidant activity assay, whole essential oil was stronger than was stronger than positive control and fractions of essential oil, because of higher levels of Isomenthone, Piperitenone and Citronellic acid. Strongest antimicrobial activity against S. aureus, E. coli and C. albicans was observed from 10 min fraction. Conclusion: Our results indicated that distillation time can create essential oils with specific properties and we can achieve to more efficient essential oil in short times.

scholarly journals Chemical Composition and Antimicrobial Activity of Anthriscus nemorosa Root Essential Oil

2011 ◽  
Vol 6 (2) ◽  
pp. 1934578X1100600
Author(s):  
Milica Pavlović ◽  
Silvana Petrović ◽  
Marina Milenković ◽  
Maria Couladis ◽  
Olga Tzakou ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Gram Positive Bacteria ◽  
Microdilution Method ◽  
Broth Microdilution Method ◽  
Bacillus Subtilis Atcc ◽  
Germacrene D ◽  
Main Components ◽  
Total Oil ◽  
Root Essential Oil

The essential oil obtained by hydrodistillation from the roots of Anthriscus nemorosa (Bieb.) Sprengel (Umbelliferae) was analyzed by GC and GC-MS. Among sixty-two compounds identified (representing 89.0% of the total oil), the main components were: n-nonane (12.1%), n-hexadecanol (6.9%), δ-cadinene (6.4%), β-pinene (6.0%) and germacrene D (5.4%). Furthermore, the antimicrobial activity of the oil was evaluated against the Gram-positive bacteria Staphylococcus epidermidis (ATCC 12228) and Bacillus subtilis (ATCC 6633), the Gramnegative bacterium Escherichia coli (ATCC 25922), and a yeast Candida albicans (ATCC 10259 and ATCC 24433) using the broth microdilution method.

scholarly journals Chemical Composition and Antimicrobial Activity of the Essential Oils of Leaves, Roots and Bark of Glossocalyx staudtii

2009 ◽  
Vol 4 (8) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Huguette Agnaniet ◽  
Thomas Makani ◽  
Raphaël Bikanga ◽  
Louis Clément Obame ◽  
Jacques Lebibi ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Disc Diffusion ◽  
Aliphatic Compounds ◽  
Gram Positive Bacteria ◽  
Agar Disc ◽  
Leaf Oil ◽  
Main Component

The chemical composition of the essential oils obtained by hydrodistillation from air dried leaves, bark and roots of Glossocalyx staudtii Engl. grown in Gabon was analyzed by GC and GC-MS. The essential oil content was 0.84% (w/w), 0.28% (w/w), and 0.74% (w/w), respectively. The leaf oil was characterized by a high content of monoterpene hydrocarbons (64.8%), with β-pinene (30.6%) and α-pinene (22.6%) as the major constituents. The oil obtained from the bark contained 30.5% of oxygenated monoterpenes with cryptone as the main constituent (11.5%) and 28.9% of aliphatic compounds, with 9.3% of 2-tridecanone; in the roots oil, the main component was 2-tridecanone (55.2%). The antimicrobial activity of the oils was studied by means of the agar disc diffusion and broth microdilution methods. The Gram positive bacteria were the most sensitive to the essential oils. A significant anticandidal effect of the bark essential oil was observed.

Chemical composition and antimicrobial and antioxidant activity of Seseli rigidum flower essential oil

2009 ◽  
Vol 45 (2) ◽  
pp. 253-256 ◽  
Author(s):  
S. Stojkovic ◽  
S. Petrovic ◽  
J. Kukic ◽  
A. Dzamic ◽  
M. Ristic ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antimicrobial And Antioxidant Activity

scholarly journals Composition and Antimicrobial Activity ofEuphrasia rostkovianaHayne Essential Oil

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Pavel Novy ◽  
Hana Davidova ◽  
Cecilia Suqued Serrano-Rojero ◽  
Johana Rondevaldova ◽  
Josef Pulkrabek ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Bacterial Infections ◽  
Antimicrobial Effect ◽  
Main Constituent ◽  
Hexadecanoic Acid ◽  
Eye Infections ◽  
Gram Positive Bacteria ◽  
Health Disorders

Eyebright,Euphrasia rostkovianaHayne (Scrophulariaceae), is a medicinal plant traditionally used in Europe for the treatment of various health disorders, especially as eyewash to treat eye ailments such as conjunctivitis and blepharitis that can be associated with bacterial infections. SomeEuphrasiaspecies have been previously reported to contain essential oil. However, the composition and bioactivity ofE. rostkovianaoil are unknown. Therefore, in this study, we investigated the chemical composition and antimicrobial activity of the eyebright essential oil against some organisms associated with eye infections:Enterococcus faecalis,Escherichia coli,Klebsiella pneumoniae,Staphylococcus aureus,S. epidermidis,Pseudomonas aeruginosa, andCandida albicans. GC-MS analysis revealed more than 70 constituents, with n-hexadecanoic acid (18.47%) as the main constituent followed by thymol (7.97%), myristic acid (4.71%), linalool (4.65%), and anethole (4.09%). The essential oil showed antimicrobial effect against all organisms tested with the exception ofP. aeruginosa. The best activity was observed against all Gram-positive bacteria tested with the minimum inhibitory concentrations of 512 µg/mL. This is the first report on the chemical composition ofE. rostkovianaessential oil and its antimicrobial activity.

Chemical composition, antioxidant and antimicrobial activities of essential oil of Thymus algeriensis wild-growing in Libya

2013 ◽  
Vol 8 (5) ◽  
pp. 504-511 ◽  
Author(s):  
Abdulhmid Giweli ◽  
Ana Džamić ◽  
Marina Soković ◽  
Mihailo Ristić ◽  
Petar Marin
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antimicrobial Activities ◽  
Practical Application ◽  
Dpph Assay ◽  
High Antimicrobial Activity ◽  
Thymus Algeriensis ◽  
Antioxidant And Antimicrobial Activities

AbstractThe composition of essential oil isolated from Thymus algeriensis growing wild in Libya was analyzed by GC and GC-MS. The essential oil was characterized with thymol (38.50%) as the major component. The oil was screened for antioxidant activity using DPPH assay, and compared to thymol and carvacrol. Antioxidant activity was high, with the IC50 of 0.299 mg/ml, compared to 0.403 and 0.105 mg/ml for thymol and carvacrol, and 0.0717 mg/ml for BHA. In addition, antimicrobial activity was tested against eight bacteria and eight fungi. T. algeriensis oil showed inhibitory activity against tested bacteria at 0.001–0.05 mg/ml, while bactericidal activity (MBC) was achieved at 0.0025–0.05 mg/ml. For antifungal activity MICs ranged 0.0005–0.025 mg/ml and MFC 0.001–0.05 mg/ml. High antimicrobial activity against the fungi in particular suggests that the essential oil of Thymus algeriensis could have a useful practical application.

scholarly journals Chemical composition, antimicrobial and antioxidant activity of the essential oil of Brocchia cinerea VIS. from Algeria

2020 ◽  
Vol 7 (2) ◽  
pp. 122-128
Author(s):  
Mohammed Tahar Ben-Moussa ◽  
Khaled Khelil ◽  
Hassina Harkat ◽  
Samia Lakehal ◽  
Youcef Hadef
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Activité Antibactérienne ◽  
Composition Chimique ◽  
Antimicrobial And Antioxidant Activity

Ce travail vise l’étude de la composition chimique, de l’activité antioxydante et antimicrobienne de l’huile essentielle (HE) de Brocchia cinerea d’Algérie vis-à-vis de trois bactéries, d’un champignon. L’analyse chromatographique (CG/SM) a montré que l’HE de Brocchia cinerea est caractérisée par la présence du Beta.-Thujone (46,80), 1-Methyl-2-(1'-methylethenyl)-3'- ethenylcyclopropylmethanol (14,59) et du 1,8-Cineole (12,63), limonen-10-ol (9,47), accompagnés d’autres composés à des teneurs relativement faibles : 1(7),3,8-oMenthatriene (3,45), (-)-Camphor (2,11). L’activité antioxydante déterminée par le test DPPH a montré que l’HE présente un faible potentiel antioxydant avec l’IC 50 = 6652 μg/ml et IC 50 = 140.53 par FRAP, en comparaison à d’autres espèces de la famille des Asteraceae. Aux concentrations étudiées, l’essence a manifesté une forte activité antibactérienne et antifongique. Cette bioactivité est due principalement à la richesse de cette essence en Beta.-Thujone connu pour son efficacité contre les agents microbiens.

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