original-paper | 14-August-2020
type of BS was analyzed using Thin Layer Chromatography (TLC) and Fourier Transform Infrared Spectrometry (FTIR). Additionally, the antimicrobial activity was examined to investigate another potential use of BS as a therapeutic agent.
Experimental
Materials and Methods
Effect of carbon sources on bacterial growth and the production of biosurfactant. These experiments were conducted to investigate the effects of different carbon sources on the growth and BS production of E. cloacae B14, whose
JINDARAT EKPRASERT,
SASIWIMON KANAKAI,
SULADDA YOSPRASONG
Polish Journal of Microbiology, Volume 69 , ISSUE 3, 273–282
Research Article | 23-May-2019
Paulina Czechowicz,
Joanna Nowicka
Postępy Mikrobiologii - Advancements of Microbiology, Volume 57 , ISSUE 3, 213–227
Original Paper | 04-December-2017
The scope of the experiments included analysis of the antimicrobial activity of ethanolic, methanolic and aqueous extracts against bacterial and fungal cultures and determination of the minimum inhibitory concentration of plant extracts tested microbial growth. Analysis of the antifungal and antibacterial activity was carried out by the disc diffusion method using paper discs. In the experiment 11 species of microorganisms – 8 bacterial and 3 fungal strains were used. The highest
Monika Cioch,
Paweł Satora,
Magdalena Skotniczy,
Dorota Semik-Szczurak,
Tomasz Tarko
Polish Journal of Microbiology, Volume 66 , ISSUE 4, 463–472
Short Communication | 15-March-2016
The aim of this study was to investigate the capacity of Streptococcus suis strains to form biofilms and to evaluate the antimicrobial activity of Penicillin G and N-acetylcystein (NAC) on both S. suis sessile and planktonic forms. Only non-typeable isolates of S. suis were correlated with a greater biofilm formation capacity. The MCI of Penicillin G and NAC required for inhibiting biofilm growth were higher than the required concentration for inhibiting planktonic growth. The combinations of
Ivette Espinosa,
Michel Báez,
Evelyn Lobo,
Siomara Martínez,
Marcelo Gottschalk
Polish Journal of Microbiology, Volume 65 , ISSUE 1, 105–109
Original Paper | 30-March-2017
active than activated PPP and the activation of coagulation is a fundamental step. Additionally, the antimicrobial activity of PRP and/or PPP seems not to be affected by periodontitis.
Reham L. Aggour,
Lina Gamil
Polish Journal of Microbiology, Volume 66 , ISSUE 1, 31–37
original-paper | 28-January-2020
JUSTYNA D. KOWALSKA,
ADRIANA NOWAK,
KATARZYNA ŚLIŻEWSKA,
MAŁGORZATA STAŃCZYK,
MAGDALENA ŁUKASIAK,
JAROSŁAW DASTYCH
Polish Journal of Microbiology, Volume 69 , ISSUE 1, 5–18
original-paper | 03-September-2019
. creber was also reported as among the lower producers of STC (Jurjevic et al. 2013).
Therefore, the lack of knowledge of this species recently assigned to section Versicolores has attracted our attention to more explore and study this species. In our research A. creber was assayed for its secondary metabolites diversity using UHPLC-MS/MS technique. Then, the antimicrobial activity of A. creber against some human pathogens and its ability to scavenge different free radicals, and to produce antioxidant
AFAF SAKHRI,
NOREDDINE KACEM CHAOUCHE,
MARIA ROSARIA CATANIA,
ALBERTO RITIENI,
ANTONELLO SANTINI
Polish Journal of Microbiology, Volume 68 , ISSUE 3, 309–316
Research Article | 22-May-2019
. Circular bacteriocins have broad antimicrobial activity spectrum, including many food spoilage bacteria and pathogens, such as Listeria, Staphylococcus and Clostridum spp. Circular bacteriocins permeabilize the membrane of sensitive bacteria, causing loss of ions and dissipation of the membrane potential, and finally cell death. Enterocin AS-48 was the first identified circular bacteriocin and is best characterized so far. Circular bacteriocins or bacteriocin-producing lactic acid bacteria have great
Urszula Błaszczyk,
Kamila Dąbrowska
Postępy Mikrobiologii - Advancements of Microbiology, Volume 56 , ISSUE 4, 451–464
minireview | 28-June-2019
factors, and the type and properties of the microorganisms (Fig. 1) (Bayliss et al. 2012).
Fig. 1.
Factors influencing the effectiveness of decontamination using cold plasma. Based on Liao et al. 2017.
The aim of this review is to present the current knowledge on the antimicrobial activity of the plasma and to discuss the molecular mechanism of interactions between cold atmospheric plasma and various groups of microorganisms.
Effect of cold plasma on viruses
The cold plasma technology becomes a
IWONA NIEDŹWIEDŹ,
ADAM WAŚKO,
JOANNA PAWŁAT,
MAGDALENA POLAK-BERECKA
Polish Journal of Microbiology, Volume 68 , ISSUE 2, 153–164
Original Paper | 26-August-2016
During a screening of lactic acid bacteria producing bacteriocin from Cotija cheese, the strain QC38 was isolated. Based on the 16S rRNA gene nucleotide sequencing (516 pb accession no KJ210322) and phylogenetic analysis, the isolate was identified as Pediococcus acidilactici. Neutralized cell-free supernatant was tested for antimicrobial activity against 17 Gram-negative and Gram-positive pathogens. Growth inhibition was achieved against Listeria monocytogenes (supplier or indication or source
Aurea I. Morales-Estrada,
Ahidé López-Merino,
Nestor Gutierrez-Mendez,
Enrico A. Ruiz,
Araceli Contreras-Rodríguez
Polish Journal of Microbiology, Volume 65 , ISSUE 3, 279–285
original-paper | 28-June-2019
JI-HOI MOON,
MI HEE NOH,
EUN-YOUNG JANG,
SEOK BIN YANG,
SANG WOOK KANG,
KYU HWAN KWACK,
JAE-IN RYU,
JIN-YONG LEE
Polish Journal of Microbiology, Volume 68 , ISSUE 2, 263–268
Original Paper | 30-June-2018
A collection of 206 Staphylococcus spp. isolates was investigated for their ability to produce compounds exhibiting antistaphylococcal activity. This group included Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus xylosus strains recovered from bovine mastitis (n = 158) and human skin wounds and soft tissues infections (n = 48). Production of substances with antimicrobial activity was observed in six strains. Five of them were recovered from bovine mastitis, and one was
MAGDALENA ZALEWSKA,
JOHN J. CHUREY,
RANDY W. WOROBO,
SŁAWOMIR MILEWSKI,
PIOTR SZWEDA
Polish Journal of Microbiology, Volume 67 , ISSUE 2, –
Original Paper | 28-December-2016
Five of thiourea derivatives were prepared using as a starting compound 3-(trifluoromethyl)aniline, 4-chloro-3-nitroaniline, 1,3-thiazol-2-amine, 2H-1,2,3-triazol-4-amine and commercial isothiocyanates. All compounds were evaluated in vitro for antimicrobial activity. Derivatives 2 and 3 showed the highest inhibition against Gram-positive cocci (standard and hospital strains). The observed MIC values were in the range of 0.5–8 μg/ml. The products effectively inhibited the formation of
Joanna Stefańska,
Karolina Stępień,
Anna Bielenica,
Małgorzata Wrzosek,
Marta Struga
Polish Journal of Microbiology, Volume 65 , ISSUE 4, 451–460
original-paper | 05-December-2019
Introduction
Nowadays nanomaterials within the size of 1–100 nm in at least one dimension with the novel, size-related properties have attracted the attention of many researchers in the area of chemistry, physics, material sciences, medicine, microbiology, and biotechnology (Rai et al. 2009, 2015; Tran et al. 2013). Silver nanoparticles (AgNPs) are one of the most commonly used engineered nanoproducts known for their antimicrobial activity (Kim et al. 2007; Rai et al. 2009; Martinez-Gutierrez
BARBARA ŻAROWSKA,
TOMASZ KOŹLECKI,
MICHAŁ PIEGZA,
KATARZYNA JAROS-KOŹLECKA,
MAŁGORZATA ROBAK
Polish Journal of Microbiology, Volume 68 , ISSUE 4, 515–525
Original Paper | 28-June-2017
The purpose of this study was to determine the antimicrobial activity and occurrence of bacteriocin structural genes in Enterococcus spp. isolated from different cheeses and also investigate some of their virulence factors. Enterococcus strains were isolated from 33 different cheeses. Enterococcus faecium (6 strains) and Enterococcus faecalis (5 strains) enterocin-producing strains were identified by 16S rDNA analyses. Structural genes entA, entB, entP and entX were detected in some isolates
Mine Avci,
Banu Özden Tuncer
Polish Journal of Microbiology, Volume 66 , ISSUE 2, 223–233
original-paper | 03-September-2019
of microbial infection. The AMP-17 gene has no functional annotation in GeneBank and is of unknown function. To further assess the antimicrobial activity of the protein encoded by this gene, the prediction tools of the Antimicrobial Peptide (APD) and Collection of Anti-Microbial Peptides (CAMP) databases were used (Wang et al. 2004; Thomas et al. 2010; Wang et al. 2016). The two databases used four different algorithms, support vector machines (SVM), random forest (RF), artificial neural networks
LONG-BING YANG,
GUO GUO,
XIN-YU ZHAO,
PEI-PEI SU,
PING FU,
JIAN PENG,
JIANG-FAN XIU,
BO-YAN LI
Polish Journal of Microbiology, Volume 68 , ISSUE 3, 383–390
original-paper | 20-December-2021
(the KEGG database is daily updated and freely available; http://www.genome.ad.jp/kegg/), it is known that, e.g., Escherichia coli, Bacillus subtilis, and Staphylococcus aureus have both pathways of acquiring LA: an endogenous pathway and LA salvage – an exogenous pathway. At this point, however, it should be noted that the results of some authors indicate that preparations containing LA also have antimicrobial activity (Zhao et al. 2018).
So the question arises whether LA is “a friend” to
MAŁGORZATA BIERNAT-SUDOLSKA,
DANUTA ROJEK-ZAKRZEWSKA,
PAULINA GAJDA,
ANNA BILSKA-WILKOSZ
Polish Journal of Microbiology, Volume 70 , ISSUE 4, 521–526
Article | 15-August-2021
Objectives: To evaluate the antibacterial properties and effects of an orthodontic adhesive containing copper nanoparticles (NPs) on the material’s shear bond strength. Methods: Antimicrobial activity was analysed by a disk diffusion test against S. aureus, E. coli and S. mutans. The NPs were added to the orthodontic adhesive at 0.0100 wt%, 0.0075 wt%, and 0.0050 wt%. Sixty extracted bicuspids were divided into two groups and the enamel of all teeth was conditioned with phosphoric acid. A
Liliana Argueta-Figueroa,
Rogelio J. Scougall-Vilchis,
Raúl A. Morales-Luckie,
Oscar F. Olea-Mejía
Australasian Orthodontic Journal, Volume 31 , ISSUE 1, 42–48
Article | 30-November-2018
, β-lactam antibiotics, and aminoglycosides [9, 53, 78, 81, 85]. The overuse of antibiotics in treatment and in industry will only further increase resistance, and will thus render it impossible to treat infections caused by drug resistant bacteria. Therefore, it is necessary to reduce the consumption of antibiotics and look for alternative substances with antimicrobial activity, which are not antibiotics, like essential oils from plants.
Essential oils (EOs) are in fact not oils, but they are
Katarzyna Leja,
Kamila Szudera-Kończal,
Kamila Myszka,
Katarzyna Czaczyk
Postępy Mikrobiologii - Advancements of Microbiology, Volume 58 , ISSUE 2, 177–190