This study explores the potential of nanometal and ozone treatment to improve Aspergillus brasiliensis resistance recycled building materials (RBMs). RBMs include gypsum board (GB), waterproof (WGB), calcium silicate (CSB), fiber cement (FCB). The A. was inoculated on each sample, their growth visually evaluated according ASTM G21-09. results show that effect with nano-silver 0.015 g/L 0.03 sol...

OBJECTIVES The antifungal activity of curcumin was evaluated against 23 fungi strains and its in vitro inhibitory effect on the adhesion of Candida species to human buccal epithelial cells (BEC) was also investigated. METHODS The antifungal susceptibility was evaluated by broth microdilution assay following the CLSI (formerly the NCCLS) guidelines. The inhibitory effect of curcumin on the cel...

Polyhexanide and betaine topical solution is used in the management of infected wounds as a cleaning agent. An in vitro study was conducted to examine the antimicrobial effects of a solution containing 0.1% of the antimicrobial agent polyhexanide and 0.1% of the surfactant betaine. Three batches of each product were tested, and culture results of 13 microorganisms were evaluated after 7, 14, an...

In the struggle for life, the capacity of microorganisms to synthesize and secrete toxic compounds (inhibiting competitors) plays an important role in successful survival of these species. This ability must come together with the capability of being unaffected by these same compounds. Several mechanisms are thought to avoid the toxic effects. One of them is toxin extrusion from the intracellula...

Background: Control of fungi is problematic, since effective methods for intervening fungal infection or contamination, especially for those resistant to drugs/fungicides, are often very limited. Generally regarded as safe (GRAS) agents, such as natural compounds or their structural analogs could be potential sources of sustainable antifungal agents. As a proof of concept, antifungal efficacy o...

Clinical and environmental samples from Portugal were screened for the presence of Aspergillus and the distributions of the species complexes were determined in order to understand how their distributions differ based on their source. Fifty-seven Aspergillus isolates from clinical samples were collected from 10 health institutions. Six species complexes were detected by internal transcribed spa...

A series of cobalt, nickel, copper, and zinc complexes of bidentate Schiff bases derived from the condensation reaction of 4-amino-5-mercapto-3-methyl/ethyl-1,2,4-triazole with 2,4-dichlorobenzaldehyde were synthesized and tested as antimicrobial agents. The synthesized Schiff bases and their metal complexes were characterized with the aid of elemental analyses, magnetic moment measurements, sp...

Cinnamaldehyde amino acid Schiff base (CAAS) is a new class of safe, bioactive compounds which could be developed as potential antifungal agents for fungal infections. To design new cinnamaldehyde amino acid Schiff base compounds with high bioactivity, the quantitative structure-activity relationships (QSARs) for CAAS compounds against Aspergillus niger (A. niger) and Penicillium citrinum (P. c...

Bacteria are able to synthesis a wide range of metabolites with fungicidal capabilities. The antagonistic potential of soil bacterial strains (E. coli, Baccillus fortis, B. faragiris, Pseudomonas flourescence and P. malophilia) was assessed by the dual culture technique against some food pathogenic fungi, i.e. Aspergillus flavus, A. niger, Penicillium italicum and P. simplicissmum. The result i...

Starch-degrading enzymes glucoamylase (from Aspergillus niger), and pullulanase (from Bacillus acidopullulyticus) were purified using alginates (polysaccharides consisting of mannuronic acids and guluronic acids) by a recently developed technique called macroaffinity ligand-facilitated three-phase partitioning (MLFTPP). In this process, a crude preparation of the enzyme was mixed with alginate....