NDLI: Ultrasonic bacterial treatment of mineral waters: a study on S. epidermidis, S. warneri, P. aeruginosa and P. mirabilis

Content Provider	Springer Nature Link
Author	Vázquez, C. Iglesias, T. P. Mourelle, L. Gómez, C. P. Lago, N. Mato, M. M. Legido, J. L.
Copyright Year	2014
Abstract	The objective of this work is to evaluate the effects of ultrasound waves on the viability of bacteria that usually occur in mineral waters such as spa thermal waters. The study was carried out at a constant temperature of 309.65 K on two Gram-positive bacteria (Staphylococcus epidermidis, Staphylococcus warneri) and two Gram-negative bacteria (Pseudomonas aeruginosa, Proteus mirabilis) with a concentration of 10$^{6}$ CFU mL$^{−1}$. A commercial ultrasonic bath was used. The effects of the ultrasounds were analysed using a microcalorimetric technique. The microcalorimetric bacterial growth curves were obtained and, stemming from said curves, the heat released by microorganisms during a culture time of 24 h was calculated. The values of the heat released in the samples treated and untreated with ultrasounds were compared. The ultrasound treatment appears to be effective in inhibiting the growth of the two Gram-positive bacteria, but not in the case of the Gram-negative, which presented greater resistance at the same experimental conditions. This study also shows microcalorimetry as an efficient technique to determine the effect of ultrasound waves on bacterial growth.
Starting Page	2863
Ending Page	2868
Page Count	6
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	6
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-07-19
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ultrasound Disinfection Bacteria Mineral water Microcalorimetry Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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