Synthesis and characterization of inclusion complexes of rosemary essential oil with various β-cyclodextrins and evaluation of their antibacterial activity against Staphylococcus aureus

2021 ◽  
pp. 102660
Author(s):  
Abedalghani Halahlah ◽  
Eleni Kavetsou ◽  
Ioanna Pitterou ◽  
Spyros Grigorakis ◽  
Sofia Loupassaki ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Inclusion Complexes ◽  
Synthesis And Characterization ◽  
Rosemary Essential Oil

scholarly journals Synthesis and characterization of Co(II), Ni(II), Cu(II) and Zn(II) complexes with 3-salicylidenehydrazono-2-indolinone

2003 ◽  
Vol 68 (8-9) ◽  
pp. 641-647 ◽  
Author(s):  
Sandra Konstantinovic ◽  
Blaga Radovanovic ◽  
Zivojin Cakic ◽  
Vesna Vasic
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Molar Conductivity ◽  
Spectral Studies ◽  
Synthesis And Characterization ◽  
Planar Geometry ◽  
Spectroscopic Methods ◽  
Square Planar

Complexes of Co(II), Ni(II), Cu(II) and Zn(II) with 3-salicylidenehydrazono-2-indolinone were prepared. Their structure was established to be [MLCl].Cl by using elemental analysis and molar conductivity, as well as AA, FTIR, UV/VIS and 1H-NMR spectroscopic methods. The spectral studies indicated a square-planar geometry for the Ni(II) and Cu(II) complexes and a tetrahedral one for the Co(II) and Zn(II) complexes. The complexes were tested for antibacterial activity against Staphylococcus aureus, Enterococcus D, Proteus mirabilis, Escherichia coli, Bacillus anthracis, Pseudomonas aeruginosa and Candida albicans.

scholarly journals Encapsulation of Oregano (Origanum onites L.) Essential Oil in β-Cyclodextrin (β-CD): Synthesis and Characterization of the Inclusion Complexes

2017 ◽  
Vol 4 (4) ◽  
pp. 74 ◽  
Author(s):  
Margarita Kotronia ◽  
Eleni Kavetsou ◽  
Sofia Loupassaki ◽  
Stefanos Kikionis ◽  
Stamatina Vouyiouka ◽  
...  
Keyword(s):  
Essential Oil ◽  
Inclusion Complexes ◽  
Synthesis And Characterization ◽  
Origanum Onites

scholarly journals Chemical Composition and In Vitro Antibacterial Activity of the Essential Oil of Phthirusa adunca from Venezuelan Andes

2011 ◽  
Vol 6 (7) ◽  
pp. 1934578X1100600 ◽  
Author(s):  
Flor D. Mora ◽  
Nurby Ríos ◽  
Luis B. Rojas ◽  
Tulia Díaz ◽  
Judith Velasco ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Essential Oil ◽  
Chemical Characterization ◽  
Salmonella Typhi ◽  
Germacrene D ◽  
In Vitro Antibacterial Activity

In this paper, preliminary studies on the chemical characterization of Phthirusa adunca Meyer essential oil, obtained by hydrodistillation, is presented. The separation of the components was performed by GC-MS. Twenty-three compounds (94.5% of the sample) were identified of which the three major ones (76% of the sample) were β-phellandrene (38.1%), germacrene D (26.8%) and β-pinene (11.5%). The essential oil showed a broad spectrum of activity against Salmonella Typhi CDC 57 (100 μg/mL), Staphylococcus aureus ATCC 25923 (200 μg/mL), Enterococcus faecalis ATCC 29212 (250 μg/mL), Escherichia coli ATCC 25922 y Klebsiella pneumoniae ATCC 23357 (500 μg/mL). This is the first report on the composition and activity of the essential oil of this species.

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

Electrospun PU/MgO/Ag Nanofibers for Antibacterial Activity and Flame Retardency

2021 ◽  
pp. 0887302X2110094
Author(s):  
V. Mamtha ◽  
H. N. Narasimha Murthy ◽  
V. Pujith Raj ◽  
Prashantha Tejas ◽  
C. S. Puneet ◽  
...  
Keyword(s):  
Antibacterial Activity ◽  
Melting Point ◽  
Protective Clothing ◽  
Electrospun Nanofibers ◽  
Synthesis And Characterization ◽  
Zone Of Inhibition ◽  
Solution Combustion ◽  
E Coli ◽  
Afterglow Time

Antibacterial activity and fire retardation are equally desired for protective clothing. For achieving this, AgNP and MgO are independently researched as nanofillers in Polyurethane based electrospun nanofibers and their synergistic effect is scarcely addressed. This article reports synthesis and characterization of MgO of 70.01 nm and AgNP of 51 to 76 nm by solution combustion and hydrothermal routes respectively and their incorporation in electrospinning of Polyurethane. Flow rate 1 ml/hr, applied voltage 13 kV, tip to collector distance 15 cm were adopted for the electrospinning. Nanofibers of 65 nm were obtained for PU/MgO (3 wt. %) and 106 nm for PU/MgO (3 wt. %)/Ag (1 wt. %). Addition of MgO increased the melting point, after flame time and afterglow time. Incorporation of AgNP improved antibacterial activity. PU/MgO/Ag (2 wt. %) exhibited zone of inhibition of 2.1 cm and 3 cm against E. Coli and S. Aureus, respectively.

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