INFLUENCES OF 50HZ ELECTRIC FIELDS ON GROWTH AND MULTIPLICATION OF SOME MICROORGANISMS
By dielectric spectroscopy and specific microbiological techniques have been studied the development (cell multiplication) of Saccharomyces cerevisiae and Aspergillus niger growing and multiplication - both on culture media with sucrose and on those with starch. The experimental results have b...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Oradea
2016-07-01
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| Series: | Journal of Sustainable Energy |
| Subjects: | |
| Online Access: | http://www.energy-cie.ro/archives/2016/nr_2/v7-n2-5.pdf |
| Summary: | By dielectric spectroscopy and specific
microbiological techniques have been studied the
development (cell multiplication) of Saccharomyces
cerevisiae and Aspergillus niger growing and
multiplication - both on culture media with sucrose
and on those with starch. The experimental results
have been revealed that the biochemical processes of
the studied biomasses have significant changes in
certain frequencies in the range 1 - 160Hz,
characteristic of the different species/metabolized
carbon source, respectively species/ metabolized
carbon source/ development phase. It has also been
found that in the case of Saccharomyces cerevisiae, the
electric field of 50 Hz up to 20V/cm reduces the length
of the LAG time and increases the growth rate of
intensive increasing phase. Cultures of Aspergillus
niger on culture medium with sucrose are stimulated
(increasing the spores production by approx. 50%
and reducing the maturity time) of 50Hz signals up to
15V/cm. Electric fields higher than 30 V/cm in all
media and investigated cultures carry on to the
growth reduction / multiplication - up to a complete
inhibition of growth at approx. 50V/cm |
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| ISSN: | 2067-5534 2067-5534 |