Exopolysaccharides of lactic acid bacteria isolated from honeybee gut and effects of their antibiofilm activity against Streptococcus mutans.

Streptococcus mutans is one of the main factors in formation of cariogenic biofilms. New strategies need to be developed to reduce the formation of cariogenic biofilms. For this purpose, bacterial exopolysaccharides (EPS) could be considered as new agents against biofilms.

The Effects of Antiperspirant Aluminum Chlorohydrate on the Development of Antibiotic Resistance in .

This study investigates the effects of the antiperspirant aluminum chlorohydrate on the development of antibiotic resistance in commensal isolates. The isolates were exposed to aluminum chlorohydrate for 30 days. The bacteria that developed resistance to oxacillin and ciprofloxacin were isolated, and the expression levels of some antibiotic resistance genes were determined using quantitative reverse transcriptase PCR.

Analysis of Chemical Structure and Antibiofilm Properties of Exopolysaccharides from EIR/IF-1 Postbiotics.

Previous studies have indicated that the exopolysaccharides of lactic acid bacteria exhibit antibiofilm activity against non-oral bacteria by preventing their initial adhesion to surfaces and by downregulating the expression of genes responsible for their biofilm formation. The aims of this study were to (1) characterize the exopolysaccharides (EPSs) of EIR/IF-1 postbiotics, (2) test their antibiofilm effect on dual biofilms, and (3) evaluate their bacterial auto-aggregation, co-aggregation, and hydrocarbon-binding inhibitory activity. The EPSs were characterized by FTIR, HPLC, and thermogravimetric analysis.

Targeting Nrf2 with Probiotics and Postbiotics in the Treatment of Periodontitis.

Periodontitis is a destructive disease of the tooth-surrounding tissues. Infection is the etiological cause of the disease, but its extent and severity depend on the immune-inflammatory response of the host. Immune cells use reactive oxygen species to suppress infections, and there is homeostasis between oxidative and antioxidant mechanisms during periodontal health.

Investigation of antibacterial properties of polyacrylonitrile fibers modified by new functional groups and silver nanoparticles.

This work reports the surface modification of polyacrylonitrile (PAN) fibers by graft copolymerization to ensure the decoration of homogenous and dense Ag nanoparticles. Two facile and subsequent modification processes resulted in a PAN fiber composite with an intact fibrous structure, sufficiently conductive for antistatic application and antibacterial activity. In the first step, some chemically attractive monomers and monomer mixtures, such as acrylic acid (AA), AA-itaconic acid (AA-IA), AA-acrylamide (AA-AAm), were introduced to the fiber surface by grafting.

The role of microbiota-derived postbiotic mediators on biofilm formation and quorum sensing-mediated virulence of Streptococcus mutans: A perspective on preventing dental caries.

Dental caries is not only one of the most prevalent diseases worldwide, but also a public health problem, undoubtedly. Among the various species of cariogenic bacteria, Streptococcus mutans is considered to be the major etiological pathogen of dental caries. The present study aimed to assess the influence of microbiota-derived postbiotic mediators (PMs) on the pathogenesis of dental caries.

The Remarkable Antibiofilm Activity of the Sweet Tooth Mushroom, Hydnum repandum (Agaricomycetes), Displaying Synergetic Interactions with Antibiotics.

This study examines the antioxidant, anticancer, antimicrobial, and antibiofilm activities of Hydnum repandum, an edible and medicinal mushroom known as sweet tooth or wood hedgehog. H. repandum ethanolic extract had a high amount of myricetin and apigenin and displayed antiproliferative effects against the MCF-7 and HT-29 cell lines.

Comparison of the chemical composition and biological effects of and .

mushrooms have long been recognized for their various therapeutic potential and medicinal properties. A few members of the genus are considered edible and many others are poisonous. This study investigated the ethanolic extracts obtained from (CN) and (IG) mushrooms for phenolic content and antioxidant, antiproliferative, antimicrobial, and antibiofilm activities.

Mathematical Models for the Biofilm Formation of and on Stainless Steel Surface in Whole Milk.

Biofilm formation of , and in milk on stainless steel were monitored at 55°C, 60°C, and 65°C for various incubation times. Although species of showed a rapid response and produced biofilm within 4 h on stainless steel, a delay (lag time) was observed for . A hyperbolic equation and a hyperbolic equation with lag could be used to describe the biofilm formation of and , respectively.

Weissella cibaria EIR/P2-derived exopolysaccharide: A novel alternative to conventional biomaterials targeting periodontal regeneration.

Healing and regeneration of periodontium are considered as a complex physiological process. Therefore, treatments need to be addressed with highly effective components modulating the multiple pathways. In this study, exopolysaccharide (EPS) produced by Weissella cibaria EIR/P2, was partially purified from the culture supernatant and subjected to characterization within the aim of evaluating its potential for periodontal regeneration.

Antioxidant, Anticancer, Antimicrobial, and Antibiofilm Properties of the Culinary-Medicinal Fairy Ring Mushroom, Marasmius oreades (Agaricomycetes).

This study is based on the phenolic composition and the antioxidant, anticancer, antimicrobial, and antibiofilm activities of the edible mushroom Marasmius oreades from Turkey. The phenolic composition of an M. oreades ethanol extract was measured by using the Folin-Ciocalteu method, aluminium chloride colorimetry, and ultraperformance liquid chromatography.

and biofilms in the dairy industry: effects of surface material, incubation temperature and milk type.

(. , . subsp.

A Comparative Study: Taxonomic Grouping of Alkaline Protease Producing Bacilli.

Alkaline proteases have biotechnological importance due to their activity and stability at alkaline pH. 56 bacteria, capable of growing under alkaline conditions were isolated and their alkaline protease activities were carried out at different parameters to determine their optimum alkaline protease production conditions. Seven isolates were showed higher alkaline protease production capacity than the reference strains.

Determination of the biofilm production capacities and characteristics of members belonging to Bacillaceae family.

The biofilm characteristics of many endospore-forming bacilli, especially the thermophiles are still unclear. In this study, a detailed identification and description of biofilm production characteristics of totally 145 isolates and reference strains belonging to Bacillaceae family, displaying thermophilic (n = 115), facultative thermophilic (n = 24) and mesophilic (n = 6) growth from genera Anoxybacillus, Geobacillus, Thermolongibacillus, Aeribacillus, Brevibacillus, Paenibacillus and Bacillus were presented. The incubation temperatures were adjusted to 37, 45 and 55-65 °C for mesophiles, facultative thermophiles, and thermophiles, respectively.

Biofilm characteristics and evaluation of the sanitation procedures of thermophilic Aeribacillus pallidus E334 biofilms.

The ability of Aeribacillus pallidus E334 to produce pellicle and form a biofilm was studied. Optimal biofilm formation occurred at 60 °C, pH 7.5 and 1.