期刊名称：Annals of Agricultural and Environmental Medicine
印刷版ISSN：1232-1966
电子版ISSN：1898-2263
出版年度：2007
卷号：14
期号：02
页码：313-313
出版社：Institute of Agricultural Medicine in Lublin
摘要：The effects of microwave radiation on viability of fungal and actinomycetal
spores growing on agar (medium optimal for growth) as well as on wooden panel and
drywall (common building construction/fi nishing materials) were studied. All materials
were incubated at high (97-99%) and low (32-33%) relative humidity to mimic “wet” and
“dry” environmental conditions. Two microwave power densities (10 and 60 mW/cm2)
and three times of exposure (5, 30, and 60 min) were tested to fi nd the most effective
parameters of radiation which could be applied to non-invasive reduction or cleaning of
building materials from microbial contaminants. Additionally, a control of the surface
temperature during the experiments allowed differentiation between thermal and microwave
effect of such radiation. The results showed that the viability of studied microorganisms
differed depending on their strains, growth conditions, power density of microwave
radiation, time of exposure, and varied according to the applied combination of the two
latter elements. The effect of radiation resulting in a decrease of spore viability on “wet”
wooden panel and drywall was generally observed at 60 min exposure. Shorter exposure
times decreased the viability of fungal spores only, while in actinomycetes colonizing the
studied building materials, such radiation caused an opposite (supporting growth) effect.
关键词：fungi, actinomycetes, microwave radiation, building materials, spore
viability.
