scholarly journals Antimicrobial activity of methanol extracts of Fontinalis antipyretica, Hypnum cupressiforme, and Ctenidium molluscum

2009 ◽  
Vol 61 (2) ◽  
pp. 225-229 ◽  
Author(s):  
M. Veljic ◽  
Aleksandra Djuric ◽  
Marina Sokovic ◽  
Ana Ciric ◽  
Jasmina Glamoclija ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Salmonella Enteritidis ◽  
Trichoderma Viride ◽  
Fontinalis Antipyretica ◽  
Moss Species ◽  
Methanol Extracts ◽  
Hypnum Cupressiforme ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

Antibacterial and antifungal activities of methanol extracts of the moss species Fontinalis antipyretica Hedw. var. antipyretica, Hypnum cupressiforme Hedw., and Ctenidium molluscum (Hedw.) Mitt. were analyzed. Antimicrobial activity was tested against Gram (+) (Bacillus subtilis, Micrococcus flavus, and Staphylococcus epidermidis) and Gram (-) (Escherichia coli and Salmonella enteritidis) bacteria. Antifungal activity of extracts was tested using the following micromycetes: Trichoderma viride, Penicillium funiculosum, P. ochrochloron, Aspergillus fumigatus, A. flavus, and A. niger. The methanol extract of Fontinalis antipyretica showed the strongest activity against the tested bacteria and micromycetes. The antibacterial effect of methanol extracts was higher against the G (-) (Escherichia coli and Salmonella enteritidis) than against the G (+) bacteria tested.

scholarly journals Antimicrobial activity of methanol extracts of Abietinella abietina, Neckera crispa, Platyhypnidium riparoides, Cratoneuron filicinum and Campylium protensum mosses

2012 ◽  
Vol 64 (3) ◽  
pp. 911-916 ◽  
Author(s):  
Danka Bukvicki ◽  
M. Veljic ◽  
Marina Sokovic ◽  
Slavica Grujic ◽  
P.D. Marin
Keyword(s):  
Antifungal Activity ◽  
Aspergillus Flavus ◽  
Antibacterial Effect ◽  
Trichoderma Viride ◽  
Antimicrobial Effect ◽  
Antibacterial And Antifungal Activity ◽  
Moss Species ◽  
Antifungal Effect ◽  
Methanol Extracts ◽  
Antibacterial And Antifungal

The antibacterial and antifungal activity of methanol extracts of the genuine mosses Abietinella abietina, Neckera crispa, Platyhypnidium riparoides, Cratoneuron filicinum var. filicinum and Campylium protensum were evaluated. Antibacterial activity was tested against Gram (+) Staphylococcus aureus, Micrococcus flavus, Bacillus cereus and Gram (-) bacteria Escherichia coli and Salmonella typhimurium. Antifungal activity was tested using micromycetes Trichoderma viride, Penicillium funiculosum, Penicillium ochrochloron, Aspergillus flavus, A. niger and A. fumigatus. The methanol extracts of all moss species showed an antimicrobial effect against the tested microorganisms. Significant antibacterial effect was achieved for Cratoneuron filicinum and Neckera crispa. The most sensitive bacteria were Bacillus subtilis and Micrococcus flavus. Abietinella abietina and Neckera crispa showed an antifungal effect against micromycetes Trichoderma viride, Penicillium ochrachloron, P. funiculosum and Aspergillus flavus.

Substituted 4-Formyl-2H-chromen-2-ones: Their Reaction with N-(2,3,4,6-Tetra-Oacetyl- β-D-galactopyranosyl)thiosemicarbazide, Antibacterial and Antifungal Activity of Their Thiosemicarbazone Products

2020 ◽  
Vol 24 (19) ◽  
pp. 2272-2282
Author(s):  
Vu Ngoc Toan ◽  
Nguyen Minh Tri ◽  
Nguyen Dinh Thanh
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Candida Albicans ◽  
Selenium Dioxide ◽  
Antibacterial And Antifungal Activity ◽  
E Coli ◽  
Antibacterial And Antifungal Activities ◽  
Alkyl Ethers ◽  
Antibacterial And Antifungal

Several 6- and 7-alkoxy-2-oxo-2H-chromene-4-carbaldehydes were prepared from corresponding alkyl ethers of 6- and 7-hydroxy-4-methyl-2-oxo-2H-chromen-2-ones by oxidation using selenium dioxide. 6- and 7-Alkoxy-4-methyl-2H-chromenes were obtained with yields of 57-85%. Corresponding 4-carbaldehyde derivatives were prepared with yields of 41-67%. Thiosemicarbazones of these aldehydes with D-galactose moiety were synthesized by reaction of these aldehydes with N-(2,3,4,6-tetra-O-acetyl-β-Dgalactopyranosyl) thiosemicarbazide with yields of 62-74%. These thiosemicarbazones were screened for their antibacterial and antifungal activities in vitro against bacteria, such as Staphylococcus aureus, Escherichia coli, and fungi, such as Aspergillus niger, Candida albicans. Several compounds exhibited strong inhibitory activity with MIC values of 0.78- 1.56 μM, including 8a (against S. aureus, E. coli, and C. albicans), 8d (against E. coli and A. niger), 9a (against S. aureus), and 9c (against S. aureus and C. albicans).

scholarly journals Chemical Composition and Antimicrobial Activity of the Essential Oil from Flowers of Eryngium triquetrum (Apiaceae) Collected Wild in Sicily

2016 ◽  
Vol 11 (7) ◽  
pp. 1934578X1601100
Author(s):  
Simona Casiglia ◽  
Maurizio Bruno ◽  
Sergio Rosselli ◽  
Felice Senatore
Keyword(s):  
Antimicrobial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Art Works ◽  
Main Components ◽  
Antibacterial And Antifungal ◽  
Historical Art

The chemical composition of the essential oil from flowers of Eringium triquetrum Vahl. collected in Sicily was evaluated by GC and GC-MS. The main components were pulegone (50.6%), piperitenone (30.5%) and menthone (7.0%). Comparison of this oil with other studied oils of Eringium species is discussed. The oil showed good antibacterial and antifungal activities against some microorganisms that infest historical art works.

scholarly journals Phytochemical investigation and in vitro antimicrobial activity of Richardia scabra

2016 ◽  
Vol 11 (2) ◽  
pp. 248 ◽  
Author(s):  
Kathirvel Poonkodi ◽  
Subban Ravi
Keyword(s):  
Antimicrobial Activity ◽  
Diffusion Method ◽  
Bacterial Strains ◽  
Weed Species ◽  
Antibacterial And Antifungal Activities ◽  
Agar Plug ◽  
Phytochemical Investigation ◽  
Antibacterial And Antifungal ◽  
Simple Sugar

<p class="Abstract">The present study was aimed to evaluate the phytochemical screening and antimicrobial activity of the petroleum ether and methanol extracts from the mature leaves of <em>Richardia scabra</em> from India. Disc diffusion method was used to determine the zone inhibition of the tested samples for antibacterial and agar plug method was used to determine the antifungal activity, while the microtube-dilution technique was used to determine the minimum inhibitory concentration. Both extracts showed significant antibacterial and antifungal activities when tested against 10 bacterial and four fungal strains. The minimum inhibitory concentrations of the methanol extract of<em> R. scabra</em> ranged between 12.5–100 μg/mL for bacterial strains. Alkaloids, steroids, flavonoids, fatty acids, terpenoids and simple sugar were detected as phytoconstituents of extracts. To the best of our knowledge, this is the first report against antimicrobial activity of common weed species <em>R. scabra</em> found in India.</p><p> </p>

scholarly journals Synthesis and Antimicrobial Activity of Some Chalcone Derivatives

2008 ◽  
Vol 5 (3) ◽  
pp. 461-466 ◽  
Author(s):  
Y. Rajendra Prasad ◽  
A. Lakshmana Rao ◽  
R. Rambabu
Keyword(s):  
Aqueous Solution ◽  
Antimicrobial Activity ◽  
Potassium Hydroxide ◽  
Room Temperature ◽  
Antimicrobial Agents ◽  
Aromatic Aldehydes ◽  
Plate Method ◽  
H Nmr ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

In an effort to develop antimicrobial agents, a series of chalcones were prepared by Claisen-Schmidt condensation of appropriate acetophenones with appropriate aromatic aldehydes in the presence of aqueous solution of potassium hydroxide and ethanol at room temperature. The synthesized compounds were characterized by means of their IR,1H-NMR spectral data and elemental analysis. All the compounds were tested for their antibacterial and antifungal activities by the cup plate method.

scholarly journals Design, Synthesis, and Antimicrobial Evaluation of Novel Pyrazoles and Pyrazolyl 1,3,4-Thiadiazine Derivatives

Molecules ◽  
2018 ◽  
Vol 23 (9) ◽  
pp. 2092 ◽  
Author(s):  
Ibrahim Radini
Keyword(s):  
Antimicrobial Activity ◽  
Minimum Inhibitory Concentration ◽  
Elemental Analysis ◽  
Inhibitory Concentration ◽  
Diazonium Salts ◽  
Design Synthesis ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antimicrobial Evaluation ◽  
Antibacterial And Antifungal

A novel series of pyrazolyl 1,3,4-thiadiazines 5a–c, 8a–c, 12, 15a–c, 17a–c, and 20 was prepared from the reaction of pyrazole-1-carbothiohydrazide 1a,b with 2-oxo-N′-arylpropanehydrazonoyl chloride, 2-chloro-2-(2-arylhydrazono)acetate, and 3-bromoacetylcoumarin. Moreover, the regioselective reaction of 5-pyrazolone-1-carbothiohydrazide 1a with 4-substituted diazonium salts and 4-(dimethylamino)benzaldehyde gave the corresponding hydrazones 21a–c and 22. The newly prepared compounds were characterized by spectroscopy and elemental analysis. Many new synthesized compounds showed considerable antimicrobial activity against tested microorganisms. Hydrazones 21a–c and 22 showed remarkable antibacterial and antifungal activities. 4-(2-(p-tolyl)hydrazineylidene)-pyrazole-1-carbothiohydrazide 21a displayed the highest antibacterial and antifungal activities with minimum inhibitory concentration (MIC) values lower than standard drugs chloramphenicol and clotrimazole, in the range of 62.5–125 and 2.9–7.8 µg/mL, respectively.

scholarly journals Chemical Constituents from the Fruits ofForsythia suspensaand Their Antimicrobial Activity

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Ping-Chung Kuo ◽  
Guo-Feng Chen ◽  
Mei-Lin Yang ◽  
Ya-Hua Lin ◽  
Chi-Chung Peng
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Column Chromatography ◽  
Chemical Constituents ◽  
Phenylethanoid Glycosides ◽  
Natural Sources ◽  
Methanol Extracts ◽  
Lead Compounds ◽  
Forsythia Suspensa ◽  
First Time

Lignans and phenylethanoid glycosides purified fromForsythia suspensawere reported to display various bioactivities in the previous literature, including the antimicrobial activity. Therefore, the present research is aimed to purify and identify the chemical constituents of the methanol extracts of fruits ofF. suspensa. The methanol extracts of fruits ofF. suspensawere fractionated and further purified with the assistance of column chromatography to afford totally thirty-four compounds. Among these isolates, 3β-acetoxy-20α-hydroxyursan-28-oic acid (1) was reported from the natural sources for the first time. Some of the purified principles were subjected to the antimicrobial activity examinations againstEscherichia colito explore new natural lead compounds.

scholarly journals The Antibacterial and Antifungal Textile Properties Functionalized by Bimetallic Nanoparticles of Ag/Cu with Different Structures

2016 ◽  
Vol 2016 ◽  
pp. 1-13 ◽  
Author(s):  
Marta Paszkiewicz ◽  
Anna Gołąbiewska ◽  
Łukasz Rajski ◽  
Ewelina Kowal ◽  
Agnieszka Sajdak ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Fungicidal Activity ◽  
Bimetallic Nanoparticles ◽  
Ionic Species ◽  
Core Shell ◽  
Strong Inhibition ◽  
Ag Nps ◽  
Antibacterial And Antifungal

We reported a preparation and characterization of five kinds of impregnation solutions, containing Ag/Cu in the form of bimetallic nanoparticles (alloy and core-shell) as well as ionic species. The cotton-polyester textiles were successfully impregnated during the washing and ironing process by as-prepared solutions to have antibacterial and antifungal properties against toEscherichia coli,Staphylococcus aureus,andCandida albicans. Moreover, we have reported the effect of type of the fabric used and number of washing/impregnation cycles (in a laboratory scale) on the bactericidal and fungicidal activity of obtained textiles. The results indicated that all tested samples after 5, 10, 15, and 20 washing/impregnated cycles exhibited an antimicrobial activity. The antifungal tests showed that only textile impregnated with solutions containing Ag+/Cu2+and Ag NPs/Cu2+exhibited a strong inhibition of fungi growth of the after 5 (99.99%) and 15 (100%) washing/impregnation cycles, respectively.

scholarly journals Antimicrobial and phytochemical evaluation of Datura Stramonium (Jimsonweed) on selected microorganisms

2021 ◽  
Vol 2 (2) ◽  
pp. 245-256
Author(s):  
Joy Nkeiruka Dike-Ndudim ◽  
Chiletam Nwadiuto Amadi ◽  
Chizaram Winners Ndubueze
Keyword(s):  
Escherichia Coli ◽  
Aspergillus Fumigatus ◽  
Datura Stramonium ◽  
Diffusion Method ◽  
Phytochemical Analysis ◽  
Zone Of Inhibition ◽  
Dry Extract ◽  
Antifungal Activities ◽  
Antibacterial And Antifungal Activities ◽  
Antibacterial And Antifungal

The purpose of this work was to determine the antibacterial and antifungal activities of Datura stramonium on selected microorganisms, and to evaluate its phytochemical properties. The dry and wet leaves of D. stramonium were collected, extracted using ethanol and water, and assessed for antibacterial and antifungal activities at different concentrations (25mg, 12.5mg, 6.25mg, and 3.12mg) by disc diffusion method. The clinical isolates of Staphylococcus aureus, Streptococcus pyogenes, Escherichia coli, Salmonela typhi, Aspergillus fumigatus and Candida albicans were used. The highest zone of inhibition for bacteria was shown with ethanolic dry extract (11.3±3.4) at 25mg/ml and the lowest with aqueous dry extract (4.0±1.4) at 25mg/ml against Escherichia coli. The highest zone of inhibition for fungi was shown with ethanolic dry extract (10±1.4) at 25mg/ml against Aspergillus fumigatus and the lowest was with ethanolic wet extract (2.0±0.0) at 25mg/ml against Candida albican.The phytochemical analysis result showed the presence of tannin (1.757%), phenol (1.149%), flavonoid (6.325%), alkaloid (8.552%), phytate (2.671%), and hydrogen cyanide (4.175%). The chromatographic analysis showed the presence of over 40 elements with the highest as hydrazine (41%) and methyl hydrogen disulphide (41%). In this study, D. stramonium leaf extracts showed significant antibacterial and antifungal activities due to the presence of the phytochemical and bioactive compounds. This upholds the native utility of this plant to treat bacterial and fungal infections. Conclusively, this plant would serve as treatment alternatives for infections and basis for sources of antimicrobial agent.

scholarly journals Antimicrobial Activity of Wine in Relation to Bacterial Resistance to Medicinal Antibiotics

OENO One ◽  
2021 ◽  
Vol 55 (1) ◽  
pp. 45-48
Author(s):  
Mladen Boban ◽  
Nataša Boban ◽  
Marija Tonkić ◽  
Mia Grga ◽  
Ana Marija Milat ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Antimicrobial Activity ◽  
Salmonella Enteritidis ◽  
Bacterial Resistance ◽  
Bacterial Suspension ◽  
Antimicrobial Drugs ◽  
Principal Mechanism ◽  
E Coli ◽  
Resistance To Antibiotics ◽  
Time Kill

Although antimicrobial properties of wine have been extensively studied, antimicrobial effects of wine in relation to bacterial resistance to medicinal antibiotics have not been examined. Therefore, our aim was to determine whether bacterial resistance to antibiotics can be related to their resistance to red wine as an unspecific antimicrobial medium. The organisms studied were Salmonella enteritidis (ATCC 13076), Escherichia coli (ATCC 25922), and two clinical isolates which exhibited different resistance to antibiotics, ESBL - producing Escherichia coli UR 3612 and Salmonella enteritidis KK 962. The time-kill curves method was used. The minimal incubation time of the bacterial suspension with wine, necessary for prevention of bacterial growth, was 3 and 20 min for E. coli ATCC and ESBL E. coli respectively. This was associated with susceptibility testing in which E. coli ATCC proved highly sensitive in contrast to ESBL-producing E. coli, which exhibited resistance to a spectrum of antimicrobial drugs of different classes regarding their principal mechanism of action. In the case of S. enteritidis strains, they were similar in their susceptibility against test antibiotics and time-kill curves following exposure to wine. Bacterial resistance to wine is closely associated with bacterial resistance to antimicrobial drugs. The exact mechanisms of antimicrobial activity of wine are still a matter of debate. However, wine might be less susceptible to bacterial resistance development and may include mechanisms different from those of medicinal antibiotics. The present study represents an initial contribution to this important subject which has been practically unexplored.

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