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  • Advancements Of Microbiology

 

Research Article

ANTIMICROBIAL ACTIVITY OF LIPOPEPTIDES

Paulina Czechowicz, Joanna Nowicka

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 3, 213–227

Original Paper

Characterisation of Antimicrobial Properties of Extracts of Selected Medicinal Plants

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 , ISSUE 4, 463–472

Short Communication

Antimicrobial Activity of Penicillin G and N-acetylcystein on Planktonic and Sessile Cells of Streptococcus suis

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 , ISSUE 1, 105–109

Original Paper

Antimicrobial Effects of Platelet-rich Plasma against Selected Oral and Periodontal Pathogens

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 , ISSUE 1, 31–37

original-paper

Anti-Salmonella Potential of New Lactobacillus Strains with the Application in the Poultry Industry

JUSTYNA D. KOWALSKA, ADRIANA NOWAK, KATARZYNA ŚLIŻEWSKA, MAŁGORZATA STAŃCZYK, MAGDALENA ŁUKASIAK, JAROSŁAW DASTYCH

Polish Journal of Microbiology , ISSUE 1, 5–18

original-paper

Chemical Composition of Aspergillus creber Extract and Evaluation of its Antimicrobial and Antioxidant Activities

. 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 , ISSUE 3, 309–316

Research Article

CHARACTERISTICS AND POTENTIAL APPLICATIONS OF CIRCULAR BACTERIOCINS

. 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 , ISSUE 4, 451–464

minireview

The State of Research on Antimicrobial Activity of Cold Plasma

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 , ISSUE 2, 153–164

Original Paper

Partial Characterization of Bacteriocin Produced by Halotolerant Pediococcus acidilactici Strain QC38 Isolated from Traditional Cotija Cheese

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 , ISSUE 3, 279–285

original-paper

Effects of Sodium Tripolyphosphate on Oral Commensal and Pathogenic Bacteria

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 , ISSUE 2, 263–268

Original Paper

Isolation of Bacteriocin-producing Staphylococcus spp. Strains from Human Skin Wounds, Soft Tissue Infections and Bovine Mastitis

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 , ISSUE 2, –

original-paper

New Look on Antifungal Activity of Silver Nanoparticles (AgNPs)

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 , ISSUE 4, 515–525

Original Paper

Antistaphylococcal Activity of Selected Thiourea Derivatives

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 , ISSUE 4, 451–460

Original Paper

Safety Evaluation of Enterocin Producer Enterococcus sp. Strains Isolated from Traditional Turkish Cheeses

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 , ISSUE 2, 223–233

original-paper

Antifungal Activity and Physicochemical Properties of a Novel Antimicrobial Protein AMP-17 from Musca domestica

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 , ISSUE 3, 383–390

Article

ANTIBACTERIAL EFFECT OF NATURAL OILS – AN OPPORTUNITY TO SOLVE THE PROBLEM OF ANTIBIOTIC RESISTANCE ON THE EXAMPLE OF PSEUDOMONAS SPP.

, 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 , ISSUE 2, 177–190

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