Extracts of Lomandra hystrix Labill. Aerial Parts Lack Antibacterial Activity and are Non-toxic in vitro

2021 ◽  
Vol 12 (1) ◽  
pp. 23-27
Author(s):  
Getmore Rumbudzai Chikowe
Keyword(s):  
Antibacterial Activity ◽  
Aerial Parts

Investigation of the Essential Oil of Ormenis africana from Morocco: Revision of Chemical Composition and Antibacterial Activity

2021 ◽  
Vol 1 (30) ◽  
pp. 34-38
Author(s):  
El Hanbali F Barrero A.F
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Essential Oil Composition ◽  
Proteus Vulgaris ◽  
Oil Composition ◽  
Gram Negative ◽  
Main Compound ◽  
Oxygenated Compounds ◽  
Aerial Parts

Abstract- The essential oil composition from the aerial parts of Ormenis africana (Asteraceae), an endemic species from Morocco, has been investigated by GC/MS. A total of 31 compounds were identified, representing 77%. After fractionation by column chromatography, the main compound was isolated and its structure elucidated by NMR spectroscopy. The essential oil was dominated by oxygenated compounds with spathulenol (45.8%) followed by camphor (7.1%), -cadinol (5.9%) and -bisabolol (5.9%) as the main compounds. This oil can be classified as spathulenol-type according to its spathulenol content. In vitro the antibacterial activity of the whole essential oil against three Gram positive (Bacillus cereus, Enterococcus faecalis, Streptococcus C) bacteria and three Gram negative (Proteus vulgaris, Escherichia coli, Pseudomonas aeroginosa) bacteria, showed significant results. Keywords: Asteraceae, Ormenis africana, Essential oil, Spathulenol, Antibacterial activity.

scholarly journals Antibacterial Activity and Composition of the Essential Oil of Peperomia Galioides HBK (Piperaceae) from Peru

2008 ◽  
Vol 3 (6) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Vincenzo De Feo ◽  
Alberto Juarez Belaunde ◽  
Joe Guerrero Sandoval ◽  
Felice Senatore ◽  
Carmen Formisano
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Vitro Activity ◽  
In Vitro Activity ◽  
Bacterial Strains ◽  
Traditional Uses ◽  
Aerial Parts

The essential oil from aerial parts of Peperomia galioides, a plant used in traditional Peruvian medicine, was obtained in a 0.25% yield by hydrodistillation. Globulol (22.2%), caryophyllene (10.2%) and limonene (9.8%) were found to be the major components. The oil was assayed for its in vitro activity against Gram (+) and Gram (-) bacterial strains, the results showed a moderate antibacterial activity and confirming the traditional uses of Peperomia sp.

Antimicrobial Activity of Some Salvia Species Essential Oils from Iran

2007 ◽  
Vol 62 (7-8) ◽  
pp. 514-518 ◽  
Author(s):  
Morteza Yousefzadi ◽  
Ali Sonboli ◽  
Farah Karimi ◽  
Samad Nejad Ebrahimi ◽  
Behvar Asghari ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Essential Oils ◽  
Staphylococcus Epidermidis ◽  
Diffusion Method ◽  
Capillary Gc ◽  
Aerial Parts ◽  
Full Flowering ◽  
Weak Activity

The aerial parts of Salvia multicaulis, S. sclarea and S. verticillata were collected at full flowering stage. The essential oils were isolated by hydrodistillation and analyzed by combination of capillary GC and GC-MS. The in vitro antimicrobial activity of the essential oils were studied against eight Gram-positive and Gram-negative bacteria (Bacillus subtilis, Bacillus pumulis, Enterococcus faecalis, Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae) and three fungi (Candida albicans, Saccharomyces cerevisiae and Aspergillus niger). The results of antibacterial activity tests of the essential oils according to the disc diffusion method and MIC values indicated that all the samples have moderate to high inhibitory activity against the tested bacteria except for P. aeruginosa which was totally resistant. In contrast to antibacterial activity, the oils exhibited no or slight antifungal property, in which only the oil of S. multicaulis showed weak activity against two tested yeasts, C. albicans and S. cerevisiae

scholarly journals Helichrysum araxinum Takht. ex Kirp. grown in Italy: volatiloma composition and in vitro antimicrobial activity

2020 ◽  
Vol 75 (7-8) ◽  
pp. 265-270
Author(s):  
Basma Najar ◽  
Valeria Nardi ◽  
Claudio Cervelli ◽  
Francesca Mancianti ◽  
Simona Nardoni ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Antibacterial Activity ◽  
Similar Amount ◽  
Biogenic Volatile Organic Compounds ◽  
Aroma Profile ◽  
Aerial Parts ◽  
Antimycotic Activity ◽  
Sesquiterpene Hydrocarbons ◽  
Volatile Organic

AbstractIn the present work the composition of biogenic volatile organic compounds (BVOCs) and the essential oil (EO) of Helichrysum araxinum Takht. ex Kirp. aerial parts, together with the antimicrobial activity, were investigated. The results showed the prevalence of sesquiterpene hydrocarbons in both spontaneous emissions as well as in the EO. The main compounds of BVOCs were γ-curcumene (10.7%), γ-muurolene (9.2%), and β-selinene (8.5%). This latter constituent also showed a similar amount in the EO and represented the most abundant compounds together with α-selinene (8.0%). It is Interesting to note the same percentage of monoterpene hydrocarbons (MHs) in both the aroma profile and the EO (18.0%) with the same most abundant compounds: β-pinene (6.3% in BVOCs vs. 5.1% in EO, respectively) and limonene (4.5% in VOCs vs. 4.9% in EO, respectively). With regard to the antimycotic activity, the EO showed to be inactive against the tested strains, while a moderate antibacterial activity was shown against Staphylococcus isolates.

scholarly journals Chemical composition and antibacterial activity of essential oil of Senecio graciliflorus

2019 ◽  
Vol 9 (1-s) ◽  
pp. 98-100 ◽  
Author(s):  
B.C. Joshi ◽  
Vinod Kumar ◽  
Bhuwan Chandra ◽  
N.D. Kandpal
Keyword(s):  
Antibacterial Activity ◽  
Essential Oil ◽  
Therapeutic Potential ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Antimicrobial Drugs ◽  
Bacterial Diseases ◽  
Aerial Parts ◽  
Plant Constituents

Objective: Among natural products, essential oils and their contituents represent a structurally diverse group of organic compounds with significant antibacterial activity. This  study  is  oriented  to  assess  the  therapeutic  potential  of  plant constituents as new antimicrobial drugs. Methods: Aerial parts of Senecio graciliflorus was steam distilled and analysed by GC and GC-MS for the volatile constituents. Essential oil was studied for their antibacterial activity against Gram-positive and Gram-negative bacteria using agar well diffusion method. Results: The results revealed that α-pinene and α-thujene are the major constituents of S. graciliflorus oil. In vitro studies showed significant antimicrobial activity against bacterial strains. Conclusion: This study demonstrated that the oil significantly inhibits the growth of baceria. S. graciliflorus would be another alternative for developing new pharmaceuticals for prevention bacterial diseases and provide a direction for the study of naturally derived drugs. Keywords: Asteraceae, Senecio graciliflorus, Essential oil, α-Pinene, Antibacterial activity.

A comparative study of the antibacterial activity of Quercus robur (Ethanolic extract) and Zinc oxide nanoparticles on Salmonella (In vitro)

2018 ◽  
Vol 9 (SPL1) ◽  
Author(s):  
Hams H. H. Alfattli ◽  
Ghufran Zuhair Jiber ◽  
Ghaidaa Gatea Abbass
Keyword(s):  
Zinc Oxide ◽  
Antibacterial Activity ◽  
Zinc Oxide Nanoparticles ◽  
Quercus Robur ◽  
Ethanolic Extract ◽  
Inhibitory Effect ◽  
Significant Inhibition ◽  
Oxide Nanoparticles ◽  
Inhibition Zones

This study which designed to evaluate the inhibitory effect of Ethanolic extract of (Quercusrobur) and Zinc oxide nanoparticles on the growth of one genus of enterobacteriacae (Salmonella). In vitro. For this purpose graduate concentrates for plant extract (50, 100, 200, 400 )mg/ml which prepared and compared with Zinc oxide nanoparticles of different concentration (2, 1, 0.5, 0.25) μg/ml,and examined. The result showed that the studied medicinal plant has antibacterial activity against this bacteria which used. The result showed that the plant has good activity in decrease the growth of this bacteria. The results of the study also showed that the nano-ZnO has very effective antibacterial action against the studied bacteria which was Salmonella,nanoparticles concentrations lead to increasing in the inhibition zones of tested bacterial growth. We also study the effect of three antibiotics Lomefloxacin (LOM), Ciprofloxacin (SIP) and Rifampin (RA) and the result showed,in a comparison within the tested bacteria,Salmonella had a significant inhibition increase in Lomefloxacin ; the ciprofloxacin showed effect on tested bacteria. However,Rifampin does not show any effect on tested bacteria.

α-Glucosidase Inhibition and Docking Studies of 5-Deoxyflavonols and Dihydroflavonols Isolated from Abutilon pakistanicum

2019 ◽  
Vol 23 (17) ◽  
pp. 1857-1866
Author(s):  
Munawar Hussain ◽  
Zaheer Ahmed ◽  
Shamsun N. Khan ◽  
Syed A. A. Shah ◽  
Rizwana Razi ◽  
...  
Keyword(s):  
Methanolic Extract ◽  
Docking Studies ◽  
Hydroxyl Group ◽  
Coumaric Acid ◽  
In Vitro Activity ◽  
Aerial Parts ◽  
First Time ◽  
Acid Esters ◽  
Phenol Moiety

Three new 5-deoxyflavonoid and dihydroflavonoids 2, 3 and 4 have been isolated from the methanolic extract of Abutioln pakistanicum aerial parts, for which structures were elucidated explicitly by extensive MS- and NMR-experiments. In addition to these, 3,7,4′-trihydroxy-3′-methoxy flavonol (1) is reported for the first time from Abutioln pakistanicum. Compound 2 and 4 are p-coumaric acid esters while compounds 2–4 exhibited α-glucosidase inhibitory activity. Docking studies indicated that the ability of flavonoids 2, 3 and 4 to form multiple hydrogen bonds with catalytically important residues is decisive hence is responsible for the inhibition activity. The docking results signified the observed in-vitro activity quite well which is in accordance with previously obtained conclusion that phenol moiety and hydroxyl group are critical for the inhibition of α-glucosidase enzyme.

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