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arXiv · 1206.6917

Real-time In Situ Electron Spin Resonance Measurements on Fungal Spores of Penicillium digitatum during Exposure of Oxygen Plasmas

Kenji Ishikawa·Hiroko Moriyama·Hiromasa Tanaka·Kazuhiro Tamiya·Hiroshi Hashizume·Takayuki Ohta·Masafumi Ito·Sachiko Iseki·Keigo Takeda·Hiroki Kondo·Makoto Sekine·Masaru Hori
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Abstract

We report the kinetic analysis of free radicals on fungal spores of Penicillium digitatum interacted with atomic oxygen generated plasma electric discharge using real time in situ electron spin resonance (ESR) measurements. We have obtained information that the ESR signal from the spores was observed and preliminarily assignable to semiquinone radical with a g-value of around 2.004 and a line width of approximately 5G. The decay of the signal is possibly linked to the inactivation of the fungal spore. The real-time in situ ESR has proven to be a useful method to elucidate plasma-induced surface reactions on biological specimens.

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Kenji Ishikawa, Hiroko Moriyama, Hiromasa Tanaka, Kazuhiro Tamiya, Hiroshi Hashizume, Takayuki Ohta, Masafumi Ito, Sachiko Iseki, Keigo Takeda, Hiroki Kondo, Makoto Sekine, Masaru Hori. 2012-06-29. Real-time In Situ Electron Spin Resonance Measurements on Fungal Spores of Penicillium digitatum during Exposure of Oxygen Plasmas. https://doi.org/10.1063/1.4733387

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