Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 15, Pages -Publisher
AIP Publishing
DOI: 10.1063/1.3399265
Keywords
food preservation; microorganisms; plasma applications; plasma chemistry
Categories
Funding
- Ministry of Education, Culture, Sports, Science and Technology in Japan [21110006]
- Grants-in-Aid for Scientific Research [21110006] Funding Source: KAKEN
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A promising, environmentally safe method for inactivating fungal spores of Penicillium digitatum, a difficult-to-inactivate food spoilage microorganism, was developed using a high-density nonequilibrium atmospheric pressure plasma (NEAPP). The NEAPP employing Ar gas had a high electron density on the order of 10(15) cm(-3). The spores were successfully and rapidly inactivated using the NEAPP, with a decimal reduction time in spores (D value) of 1.7 min. The contributions of ozone and UV radiation on the inactivation of the spores were evaluated and concluded to be not dominant, which was fundamentally different from the conventional sterilizations.
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