scholarly journals Potential Activity of Some Essential Oils and Human Amniotic Membrane against Malassezia furfur and Staphylococcus aureus Isolated from Pityriasis Versicolor Patients

2018 ◽  
Vol 0 (0) ◽  
pp. 0-0 ◽  
Author(s):  
Seham El-Tablawy ◽  
Nashwa Radwan ◽  
Eman Araby
Keyword(s):  
Staphylococcus Aureus ◽  
Essential Oils ◽  
Amniotic Membrane ◽  
Pityriasis Versicolor ◽  
Human Amniotic Membrane ◽  
Malassezia Furfur ◽  
Potential Activity ◽  
And Staphylococcus Aureus

Study on Propolis Quality from China and Uruguay

2000 ◽  
Vol 55 (9-10) ◽  
pp. 778-784 ◽  
Author(s):  
Josep Serra Bonvehí ◽  
Francesc Ventura Coll
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Bacillus Subtilis ◽  
Biological Activities ◽  
The State ◽  
Active Components ◽  
E Coli ◽  
Geographic Origins ◽  
Potential Activity ◽  
And Staphylococcus Aureus

Abstract The composition, bacteriostatic and ROO• -scavenging potential activities of fifteen propolis samples from various botanic and geographic origins were determined to obtain objective information related to propolis quality. Variance analysis showed significant differences (p ≤ 0.05) in the contents of polyphenols, flavonoids and active components between fresh and aged propolis. The state of the product (fresh or aged) could be differentiate by using flavonoid pattern and biological activities. A minimum propolis concentration of 80 μg/ml was required inhibit Bacillus subtilis and Staphylococcus aureus while 800 μg/ml was required to inhibit Escherichia coli using fresh propolis. Aged propolis inhibit B. subtilis and S. aureus at concentration of 100 μg/ml and E. coli at 1000 μg/ml. A minimum flavonoids percentage of 18 g/100 g and a maximum ROO• -scavenging potential activity of 4.3 μg/ml were determined in fresh propolis. Flavonoids levels in aged propolis were approximately 20% lower than in fresh propolis. A maximum flavonoids percentage of 19.8 g/100 g and a ROO•-scavenging potential activity between 5.7 to 6.4 μg/ml in aged propolis were quantified. Another objective was to assess the use of ROO•-scavenging potential activity in propolis quality.

scholarly journals Antibacterial Activity of Leaves and Rhizome of Curcuma xanthorrhiza Essential Oils on Different Distillation Time

2018 ◽  
Vol 3 (3) ◽  
pp. 116-120
Author(s):  
Nur Syafiqah Nadiah Mohammad Rafi ◽  
Irmanida Batubara ◽  
Anthony Nyangson Steven
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Essential Oils ◽  
Mobile Phase ◽  
Clear Zone ◽  
Rf Values ◽  
Curcuma Xanthorrhiza ◽  
Layer Chromatography ◽  
And Staphylococcus Aureus

This research aims to determine the antibacterial activity of Curcuma xanthorrhiza leaves and rhizomes essential oil with different distillation time of 2 hours, 4 hours and 6 hours against Escherichia coli and Staphylococcus aureus. The essential oils produced then separated by thin layer chromatography (TLC) with n-hexane: toluene: dichloromethane 1:8:1 as the mobile phase. The result shows that on the first two hours distillation gave the highest yield compared to the next two hours or four hours. Based on TLC chromatograms, the highest content of compounds found at 4-6 hours distillation time. TLC bioautography contact was used for antibacterial activity tested on chromatogram and the clear zone appears on it indicates the spots were active as antibacterial activity against both bacteria with Rf values of 0.35 and 0.49 for rhizomes, rhizome essential oils 4-6 hours distillation time as the most significance active.

scholarly journals Selected Antimicrobial Essential Oils Eradicate Pseudomonas spp. and Staphylococcus aureus Biofilms

2012 ◽  
Vol 78 (11) ◽  
pp. 4057-4061 ◽  
Author(s):  
Nicole L. Kavanaugh ◽  
Katharina Ribbeck
Keyword(s):  
Staphylococcus Aureus ◽  
Antibiotic Resistance ◽  
Essential Oils ◽  
Living Cells ◽  
Free Living ◽  
Pseudomonas Spp ◽  
Antimicrobial Treatments ◽  
And Staphylococcus Aureus

ABSTRACTBiofilms are difficult to eliminate with standard antimicrobial treatments due to their high antibiotic resistance relative to free-living cells. Here, we show that selected antimicrobial essential oils can eradicate bacteria within biofilms with higher efficiency than certain important antibiotics, making them interesting candidates for the treatment of biofilms.

scholarly journals Comparative study of the chemical composition and biological activities of the essential oils of Senecio gallicus from Tunisia.

2014 ◽  
Vol 10 (8) ◽  
pp. 3012-3021
Author(s):  
Mohamed Mihoubi ◽  
Wafa Mihoubi ◽  
Ali Gargouri ◽  
Raoudha Jarraya
Keyword(s):  
Mass Spectrometry ◽  
Staphylococcus Aureus ◽  
Gas Chromatography ◽  
Essential Oils ◽  
Biological Activities ◽  
Chemical Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Bacillus Sp ◽  
Moderate Effect ◽  
And Staphylococcus Aureus

The essential oils of flowers and remaining parts of the plant Senecio gallicus (Asteraceae), growing wild in Sfax (Tunisia), were obtained by hydrodistillation over a period of two years (2012 and 2013). Their analysis by Gas Chromatography-Mass Spectrometry (GC-MS), led to a total number of 36 components, belonging to different classes of chemical compounds. Oils compositions were characterized by the abundance of monoterpenes hydrocarbons, the major compounds present in flowers for the two years of study were  respectively the sabinene (49.45% and 28.86%), the α-pinene (9.67% and 9.1%), and the β-myrcene (9.88% and 10.97%). These compounds were also dominant in the essential oils of the plant without flowers where they represent (65.34% and 55%) for the sabinene, (4.14% and 7.3%) for α-pinene, and (6.86% and 0%) for β-myrcene. Obtained essential oils were tested for many biological activities and showed a moderate effect against the fungus Trichoderma reesei and bacteria such as Bacillus sp and Staphylococcus aureus. This study of the Senecio gallicus essential oils represents the first one in Tunisia.

Sign in / Sign up

Export Citation Format

Share Document