[Influence of metal nanoparticles on some microorganisms and microflora of unpasteurized beer].
The influence of nanoparticles of gold, silver, dioxide of cerium and zirconium in low concentration (0.5-7.5 mg/l) on pure cultures of Escherichia coli IEM-1, Bacillus subtilis BT-2, Candida scottii KB-2, Saccharomyces cerevisiae OB-3, Aspergillus niger R-3, Fusarium culmorum T-7 and Penicillium chrysogenum F-7 has been investigated. Silver nanoparticles, which caused a decrease of the amount of S. cerevisiae OB-3 cells by 90% after one hour of exposition, and led to almost complete death of vegetative and spore cells of B. subtilis BT-2 after 1 and 24 h of exposition, respectively, proved to be the most effective antimicrobial preparation. The decrease by one-two orders of the amount of B. subtilis BT-2 and of S cerevisiae OB-3 cells under the influence of preparations of silver nanoparicles in the presence of gold has been established. After adding silver preparations to the unpasteurized beer one could observe a decrease by 10-20% of bacterial and by about 40% of fungi which contaminated microflora on the 20th day of shelf-life. The paper is presented in Ukrainian.
T P
TP
Pyrog
A D
AD
Konon
S I
SI
Antoniuk
V V
VV
Olishevs'kyĭ
A I
AI
Marynin
D000900:Anti-Bacterial Agents / Q000737:chemistry / Q000494:pharmacology*; D000935:Antifungal Agents / Q000737:chemistry / Q000494:pharmacology*; D001234:Aspergillus niger / Q000187:drug effects / Q000254:growth & development; D001412:Bacillus subtilis / Q000187:drug effects / Q000254:growth & development; D001515:Beer / Q000382:microbiology*; D002175:Candida / Q000187:drug effects / Q000254:growth & development; D002563:Cerium / Q000737:chemistry / Q000494:pharmacology; D004926:Escherichia coli / Q000187:drug effects / Q000254:growth & development; D005519:Food Preservation / Q000379:methods*; D005670:Fusarium / Q000187:drug effects / Q000254:growth & development; D006046:Gold / Q000737:chemistry / Q000494:pharmacology; D053768:Metal Nanoparticles; D008826:Microbial Sensitivity Tests; D010408:Penicillium chrysogenum / Q000187:drug effects / Q000254:growth & development; D012441:Saccharomyces cerevisiae / Q000187:drug effects / Q000254:growth & development; D012834:Silver / Q000737:chemistry / Q000494:pharmacology*; D015040:Zirconium / Q000737:chemistry / Q000494:pharmacology
D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D002563:Cerium; D012834:Silver; C030583:ceric oxide; D006046:Gold; D015040:Zirconium; C028541:zirconium oxide