scholarly journals Antimicrobial Activity and Component Analysis of Cleome spinosa against Fusarium oxysporum

2014 ◽  
Vol 172 (8) ◽  
pp. 4084-4098 ◽  
Author(s):  
Mohammadhassan Gholami-Shabani ◽  
Azim Akbarzadeh ◽  
Dariush Norouzian ◽  
Abdolhossein Amini ◽  
Zeynab Gholami-Shabani ◽  
...  

2016 ◽  
Vol 11 (1) ◽  
pp. 1934578X1601100 ◽  
Author(s):  
Simona Casiglia ◽  
Maurizio Bruno ◽  
Federica Senatore ◽  
Felice Senatore

Hydrodistillation of the flowers (BpFl) of and fruits (BpFr) of Bupleurum fontanesii Guss. ex Caruel gave two oils that were analyzed by GC and GC-MS. The main components were α-elemol (16.7%), caryophyllene oxide (16.4%) and heptacosane (15.9%) in BpFl, and spathulenol (16.8%), caryophylladienol I (13.2%) and α-elemol (12.8%) in BpFr. A good antimicrobial activity against several microorganisms, including Bacillus subtilis, Staphylococcus aureus, Fusarium oxysporum and Aspergillus niger, all infesting historical art craft, was also determined.


2003 ◽  
Vol 4 (1) ◽  
Author(s):  
Virgnínia Claudia Da SILVIA ◽  
Vitor Alberto KEBER

Acacia longifolia (Andr.) Willd., é um arbusto de 3-4 m de altura. Arbusto originário da região leste tropical da Austrália, muito cultivado para fixar dunas em terrenos íngremes, sujeitos a erosão. Acacia longifolia (Andr.) Willd. foi investigada visando a identificação dos flavonóides majoritários em suas flores e a avaliação de atividades antimicrobianas. Através de métodos cromatográficos, três flavonóides foram isolados a partir da fração acetato de etila. Estes foram identificados a partir de análises espectroscópicas e propriedades físico-químicas como uma flavanona, a naringenina e dois de seus heterosídeos: a naringenina-5-b-D-glucosídeo. Usando CLAE, os flavonóides isolados foram qualificados no material isolado, apresentando teores mínimos de 0,582 % (m/m) de naringenina-5-b-D-galactosídeo, 0,2 % (m/m) de naringenina-5-b-D-glucosídeo e 0,018 % (m/m) de naringenina. A fração Acetato de Etila, na concentração de 500 ppm mostrou uma significativa atividade anti-fúngica, inibindo 30% do crescimento micelial de Rysoctonia sp. Também houve inibição do crescimento micelial de Colletotrichum acutatum (15,9 %) e de Fusarium oxysporum (10,5 %). O extrato etanólico bruto, suas frações Acetato de Etila e Diclorometano foram testadas contra cepas de Saphylococcus aureus, S. epidermidis e Escherichia coli em concentrações até 1000 mg, não sendo detectada qualquer atividade inibitória. ANALYSIS OF Acacia longifolia (Andr.) Willd. Leguminosae-mimosoideae FLAVONOIDS Abstract Acacia longifolia (Andr.) Willd., is a shrub (3-4 m in height). Originally from Australia east-tropical region, it is cultivated to firm dunes in steep grounds. A. longifólia was invesstigated to evaluate antimicrobial activity and to identify flavonoids in its flowers. Three flavonoids were isolated through chromatographic means from the ethyl acetate fraction. The flavonoids were identified by spectral analysis and physical-chemical properties as Naringenin, a flavonone, and two of its glycosides, naringenin-5-b-D-galactoside e a naringenin-5-b-D-glucoside. Using na HPLC system, the isolated flavonoids were quantified in the plantmaterial, givingminimumvalues of 0,582%(w/w) of naringenin- 5-b-D-galactoside, 0,2 % (w/w) of naringenin-5-b-D-glucoside and 0,018 % (w/w) of naringenin. At the concentration of 500 ppm the ethyl acetate fraction showed a remarkable anti-fungi activity inhibiting 30%of themicelial growth of Rysoctonia sp. It also inhibit themicelial growth of Colletotrichum acutatum (15,9 %) and Fusarium oxysporum (10,5 %). The crude ethanoiic extract, its ethyl acetate and dichloromethane fractions were tested against strains of Saphylococcus aureus, S. epidermidis and Escherichia coli at concentrations up to 1000 mg, giving no activity.


2016 ◽  
Vol 7 ◽  
Author(s):  
Ana P. Sant'Anna da Silva ◽  
Luís C. Nascimento da Silva ◽  
Caíque S. Martins da Fonseca ◽  
Janete M. de Araújo ◽  
Maria T. dos Santos Correia ◽  
...  

2020 ◽  
Vol 28 (4) ◽  
pp. 555-566
Author(s):  
N. Goredema ◽  
T. Ndowora ◽  
R. Shoko ◽  
E. Ngadze

Streptomyces species are aerobes and chemoorganotrophic bacteria. These microorganisms produce a wide range of industrially significant compounds, specifically antibiotics and anti fungal substances. The objective of this study was to characterise soil-borne Streptomyces isolates using morphological and molecular traits in order to identify them to species level, and leverage from their potential to suppress the growth of Aspergillus flavus, Fusarium oxysporum and Penicillium italicum. Twenty-seven soil-borne putative Streptomyces, which elicited comprehensive antimicrobial activity against Aspergillus flavus, Fusarium oxysporum and Penicillium italicum, in a previous study, were evaluated. On the basis of morphology, the bacteria resembled the genus Streptomyces. Initially, colonies phenotypically appeared to have a relatively smooth surface but as growth progressed the bacteria developed a weft of aerial mycelium granular, powdery or velvety in appearance. Bacteria produced a wide variety of pigments which in turn were responsible for the colour of the vegetative and aerial mycelia, colour ranged from white to cream or buff shades and yellow to orange or brown. Microscopic analyses and morphological characteristics generated sub-groups of the isolates and clustered them according to their similarities. One bacterial strain was randomly selected from each cluster and investigated using molecular characteristics. Partial 16S rDNAs from the selected representative isolates from each subgroup, were sequenced and phylogenetic analysis performed. The 16S rDNA sequences of the isolates indicated that they were related to  Streptomyces species: S. bungoensis, S. thermocarboxydus, S. corchorusii and S. lasaliensis, that are known secondary metabolite producers possessing antimicrobial activity against plant pathogens.


2015 ◽  
Vol 80 (11) ◽  
pp. 1361-1366 ◽  
Author(s):  
Dongamanti Ashok ◽  
Sidda Ravi ◽  
Vijaya Lakshmi ◽  
Arram Ganesh

A new series of 2-(9-ethyl-9H-carbazol-3-yl)-3-hydroxy-4Hchromen-4-ones have been synthesized from substituted 2-hydroxy acetophenones and 9-ethyl-9H-carbazole-3-carbaldehyde using NaOH and H2O2 by modified Algar-Flynn-Oyamada reaction. In this method flavonols are synthesized without isolating chalcones in good yields (70-82%). The structures of the compounds were established on the basis of 1H-NMR, 13CNMR, FT-IR and mass spectral and analytical data. All the compounds were evaluated for their antimicrobial activity against bacteria such as Staphylococus aureus, Bacillus subtilis, Escherichia coli and Klebsiella pneumoniae as well as fungi such as Aspergillus flavus and Fusarium oxysporum.


2009 ◽  
Vol 4 (9) ◽  
pp. 1934578X0900400 ◽  
Author(s):  
Chau Van Minh ◽  
Nguyen Tien Dat ◽  
Nguyen Hai Dang ◽  
Nguyen Hoai Nam ◽  
Ninh Khac Ban ◽  
...  

From the methanol extract of Dracaena cambodiana roots two unusual 22S-spirostane steroids (1β,3β,14α,20R,22S,25R)-spirost-5-ene-1,3, 14-triol (1) and (1β,3β,14α,15α,20R,22S,25R)-spirost-5-ene-tetrol (2) have been isolated, together with a known 22R-spirostane compound, namogenin B (3). Their structures were elucidated by spectroscopic and spectrometric methods, including HRMS and extensive 1D and 2D NMR spectroscopy. Compound 1 showed significant antimicrobial activity against Pseudomonas aeruginosa, Staphylococcus aureus and Fusarium oxysporum, with MIC values of 45.0, 25.0 and 50.0 μg/mL, respectively.


Author(s):  
T.C.M. Stamford ◽  
S.R.C. Alcântara ◽  
L.R.R. Berger ◽  
N.P. Stamford ◽  
M.C.F. Silva ◽  
...  

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