The purpose of this study was to determine the effectiveness of photocatalytic ionisation as a disinfection method for filter materials contaminated by microorganisms, and to assess how air relative humidity (RH), time and microbe type influence the effectiveness of this disinfection. In the quantitative analysis of a used car air filter, bacterial contamination equalled 1.2 x 10(5) cfu/cm2, fu...

some yeast species play important roles in biological control of some fruits’ post harvest infections. for instant, candida, rhodotorula and pichia species employed in biological control of such post harvest diseases as blue mold (penicillium expansum), and also grey mold (botrytis mali) in apple. species identification of yeasts is some most essential part of the related research activities. d...

Exopolysaccharides from the lactose-negative yeast Rhodotorula glutinis 16P were synthe­ sized by co-cultivation with the yeast Kluyveromyces lactis MP11 or with the homofermentative lactic acid bacteria Lactobacillus helveticus 9A in a cheese whey ultrafiltrate. Exopoly­ saccharides were produced by lactose hydrolysis, performed by two pathways: with ß-galactosidase from Kluyveromyces lactis M...

OBJECTIVES The infections caused by basidiomycetous yeasts are often difficult to resolve. Combined therapy might be useful in those severe cases where a monotherapy was ineffective. The aim of this study was to evaluate the in vitro activity of combinations of micafungin with amphotericin B or fluconazole, itraconazole, voriconazole and ravuconazole against isolates of Trichosporon, Rhodotorul...

The 'Nduja of Spilinga protected geographical indication (PGI) is a spreadable italian salami, obtained by using fat (50%), lean of pork (25%), chili pepper (25%) and NaCl, stuffed into natural pork casing. Its predominant flora is represented by yeasts, reaching at the end of seasoning values of 6 log CFU/g. Considering the need to enhance and protect traditional local products, it seemed inte...

Rhodotorula glutinis CCY 20-2-26 when grown under controlled stress of either NaCl (1-5 %) or H2O2 (1-5 mM) on basal media exhibited a twofold increase in its total phenolic contents. The radical scavenging capacities (RSCs) as determined by ABTS test were found to be highest in 4 mM H2O2 (1.44 mM TEAC mg-1) and 4 % NaCl (1.13 mM TEAC mg-1) as compared to control samples (0.41 mM TEAC mg-1). Si...

Cell-free preparations from Rhodotorula glutinis catalyzed the conversion of deoxyribonucleosides to ribonucleosides in a pyrimidine deoxyribonucleoside 2' -hydroxylase reaction. The reaction occurred with only thymidine or deoxyuridine, of the common deoxyribonucleosides, without detachment of the deoxyribose moiety, at the nucleoside level. The same enzyme preparations catalyzed the conversio...