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Effect of low power microwave on microbial growth and metabolism - Microwave-Microbe Interaction (Paperback)
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Effect of low power microwave on microbial growth and metabolism - Microwave-Microbe Interaction (Paperback)
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Scientific Study from the year 2012 in the subject Biology - Micro-
and Molecular Biology, grade: A, Nirma University, course: M.Sc.,
language: English, abstract: This study aimed at investigating the
effect of low power (90 W) microwave radiation (2450 MHz) on
microbial growth, enzyme activity (protease and urease), and
aflatoxin production. Thermal effect was avoided by keeping
inoculum in ice while treating with microwave (for varying duration
i.e. 2, 4, and 6 min). After 6 min MW treatment to S. aureus, its
growth was stimulated over control by 10%. Total protease activity
in Aeromonas hydrophila witnessed a 33% decrease as compared to
control after a microwave exposure of 2 min. Similar decrease of
24% in total protease activity of Candida albicans was observed
after microwave exposure of 6 min. Staphylococcus aureus lost its
urease activity completely after microwave treatment. Aflatoxin
production was completely inhibited in Aspergillus parasiticus
after microwave exposure of 2, 4, and 6 min. However, it required a
6 min microwave exposure for complete inhibition of aflatoxin
production in Aspergillus flavus. Our results positively suggest
existence of microwave specific non-thermal effect on microbial
growth and metabolism.
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