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Inactivation of Escherichia coli by microwave induced low temperature argon plasma treatments by Dambadarjaa Purevdorj; Noriyuki Igura; Isao Hayakawa; Osamu Ariyada is a Agricultural and Biological Sciences article available to read on EtoBox.

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In this study, the design and plasma generation principle of a microwave induced plasma sterilization technique is described. Generation of low temperature argon plasma was investigated for different microwave power densities. Inactivation effects of the plasma were studied on bio-indicators carrying Escherichia coli as a function of microwave power density and particularly for different locations of the bio-indicator holder. The results showed that argon plasma having a temperature below 60 °C are generated having less than 4:21 w=cm 3 of microwave power density at an ambient temperature of 34 °C. Survival of E.coli was significantly reduced when the microwave power density of the plasma treatments increased. While, high inactivation was observed at the center, it was less effective at the two opposite edges of the bio-indicator holder.

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Author

Dambadarjaa Purevdorj; Noriyuki Igura; Isao Hayakawa; Osamu Ariyada

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0260-8774)

Published

2002

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)