Combined effect of UV radiation and ultrasonic cavitation on saprophytic and conditionally pathogenic microflora of cold-water ultrasound
https://doi.org/10.37663/0131-6184-2023-1-72-76
Abstract
The paper considers the combined effect of ultraviolet radiation (UV) and ultrasonic cavitation (ultrasonic) as part of ultrasonic filtration systems on representatives of saprophytic and conditionally pathogenic microflora of water. Ultrasound examination (25 kHz) is a promising method of purification in aquaculture due to the possibility of inactivation of microorganisms in agglomerates that are not exposed to UV. As a result of the study of the cultivated microflora, it was found that ultraviolet radiation and the combined effect of UV and ULTRASOUND have a significant effect on the quantity and quality of saprophytic microflora of water. It is shown that the studied modes of operation led to a significant decrease (at p <0.05) in the occurrence of the genus Escherchia relative to the control (without exposure to ultrasound and UV). The total contamination of UV water decreased to 1.2 × 102 CFU/ml with UV operation and to 1.1 × 102 CFU/ml with the combined action of UV and ultrasound. The UV sterilizer showed low efficiency in relation to Enterobacter cloacae, while the combined effect of UV and ultrasound led to a significant decrease in CFU to 0.94 ± 0.05 Log10.
About the Authors
D. L. Nikiforov-Nikishin
FGBOU VO "MGUTU im. Razumovsky (PKU)"
Russian Federation
Russian Federation
Candidate of Biological Sciences, Associate Professor, Leading Researcher
Faculty of Biotechnology and Fisheries
Moscow
A. V. Gorbunov
FGBOU VO "MGUTU im. Razumovsky (PKU)"
Russian Federation
Russian Federation
Candidate of Biological Sciences, Leading Researcher
Faculty of Biotechnology and Fisheries
Moscow
O. G. Bugaev
FGBOU VO "MGUTU im. Razumovsky (PKU)"
Russian Federation
Russian Federation
Master's student, senior laboratory assistant
Faculty of Biotechnology and Fisheries
Moscow
S. V. Smorodinskaya
FGBOU VO "MGUTU im. Razumovsky (PKU)"
Russian Federation
Russian Federation
Candidate of Technical Sciences, Head of the laboratory
Faculty of Biotechnology and Fisheries
Moscow
N. I. Kochetkov
FGBOU VO "MGUTU im. Razumovsky (PKU)"
Russian Federation
Russian Federation
Junior Researcher
Faculty of Biotechnology and Fisheries
Moscow
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Review
For citations:
Nikiforov-Nikishin D.L., Gorbunov A.V., Bugaev O.G., Smorodinskaya S.V., Kochetkov N.I. Combined effect of UV radiation and ultrasonic cavitation on saprophytic and conditionally pathogenic microflora of cold-water ultrasound. Fisheries. 2023;(1):72-76. (In Russ.) https://doi.org/10.37663/0131-6184-2023-1-72-76
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