Key words: supercritical fluid carbon dioxide, biodeterioration, micromycetes, mildew, fungicidal effect, disinfection, paper
For the first time in Russia, experience was used to evaluate the fungicidal effect of
supercritical fluid carbon dioxide on 12 types of micromycetes that destroy paper. For
the purpose of further use for disinfection treatment of library and museum collections,
the effectiveness of various modes was assessed on paper samples with foci of biodamage
caused by the micromycete Aspergillus niger: pure supercritical carbon dioxide and
with the addition of ethanol as a co-solvent at a concentration of 2% and 4 %. Pure
supercritical carbon dioxide results in minimal reduction of microorganisms on the
surface of samples. Treatment with supercritical carbon dioxide in the presence of
alcohol as a co-solvent has a pronounced fungicidal effect, which was demonstrated on
all test cultures.
Processing in supercritical carbon dioxide with the addition of 4% ethanol with stirring
allows for a high degree of sterilization and is a promising method for processing library
collections.
doi:10.1134/S1990793125700988