Study of bacterial sensitivity in zinc sulfate solutions by microcalorimetry

Aveledo, Ricardo; Aveledo, Alberto; Vázquez, Cristina; Rivero, Natividad Lago; Mato, M. M.; Legido, J.L.

doi:10.1007/s10973-018-7000-x

Cited by 7 publications

(3 citation statements)

References 23 publications

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“…where A (μV⋅h) is the area under the curve (AUC), calculated by trapezoidal method, and K represents a constant, whose value of 23.8 μV −1 ⋅h −1 was calculated from the electric calibration performed by the Joule effect of the equipment [55]. A Setaram EJP30 stabilized current source was used to perform an electrical calibration.…”

Section: Materials and Methodologymentioning

confidence: 99%

“…Despite previous studies, there is lack of evidence of the effect of metallic solutions in bacteria growth. Aveledo et al [55] reported the bacterial growth of Pseudomonas aeruginosa measured by microcalorimetry using different concentrations of zinc sulfate. The present paper is a continuation of that research whose objective is to analyze the bacterial growth of Pseudomonas aeruginosa under the exposure to silver nitrate.…”

Section: Introductionmentioning

confidence: 99%

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Antibacterial activity of silver nitrate on Pseudomonas aeruginosa bacteria using Calvet calorimetry

Aveledo

Rivero

et al. 2022

J Therm Anal Calorim

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This study aimed to use microcalorimetry to analyze the real-time effect that silver nitrate has on one of the most common bacteria involved in severe infections in current medical practice. Using a Calvet microcalorimeter, the heat output produced by Pseudomonas aeruginosa was determined when exposed to concentrations of silver nitrate from 0 to 3 mol⋅m−3, and a saturated solution. Under physiological human body temperature, for 46 h, thermographic curves were obtained. The maximum voltage peaks (Vmax) and the total amount of heat exchanged (Q) were determined. The results showed a bactericidal effect, with a minimum inhibitory concentration (MIC) of silver nitrate of 0.75 mol⋅m−3, showing a Vmax of 93 μV and Q of 193 kJ. With higher concentrations of this metallic solution, the results highlighted the proportional negative effect that silver nitrate has in Pseudomonas aeruginosa growth.

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Section: Materials and Methodologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antibacterial activity of silver nitrate on Pseudomonas aeruginosa bacteria using Calvet calorimetry

Aveledo

Rivero

et al. 2022

J Therm Anal Calorim

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“…Isothermal microcalorimetry is a technique which measures the heat flow of chemical, physical, and biological processes [ 12 – 14 ]. It has been used for the detection of infection and contamination of clinical products and samples, determination of effects of antimicrobial compounds, monitoring and quantification of soil microbial activity and contamination, viral infections and activities of antiviral compounds, and spoilage of food [ 15 – 30 ].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial activity effects of electrolytically generated hypochlorous acid-treated pathogenic microorganisms by isothermal kinetic simulation

Tsai

Liu

Lin

et al. 2022

J Therm Anal Calorim

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This study involves isothermal kinetic simulation to evaluate the parameters of inhibition conditions for Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) of high-risk pathogens. This is because the new type of the 2019 novel coronavirus (2019-nCoV) is continuously spreading and the importance of public health issues. Environmental disinfection and personal wearing of masks have become important epidemic prevention measures. Selection of concentration kinetics could be estimated best for E. coli and S. aureus of pathogens, 2.74 × 10 4 and 10 5 and 2.44 × 10 4 and 10 5 colony-forming units (CFU mL –1 ), by isothermal micro-calorimeter (TAM Air) tests, respectively. Comparisons were made of different doses of 0–70 ppm (in 20 mL test ampoule) hypochlorous acid treatment for conducting n th-order and autocatalytic reaction simulation to evaluate the inhibition reaction parameters, which determined the autocatalytic kinetic model that was beneficially applied on the E. coli and S. aureus . We developed the inhibition reaction parameters of the pathogens, which included the activation energy ( E a ), the natural logarithm of pre-exponential factor (ln k 0 ), the enthalpy of inhibition microbial growth reaction ( ∆H ), inhibition microbial growth, and the inhibition growth analysis. Overall, we conducted isothermal kinetic simulation to understand the antimicrobial activity effects of electrolytically generated hypochlorous acid-treated pathogenic microorganisms, which will provide reference for public health and medical-related fields for SDG3, and can contribute to ensuring human health and hygiene.

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Anti-Staphylococcus aureus evaluation of gallic acid by isothermal microcalorimetry and principle component analysis

Wang³

2018

J Therm Anal Calorim

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Study of bacterial sensitivity in zinc sulfate solutions by microcalorimetry

Cited by 7 publications

References 23 publications

Antibacterial activity of silver nitrate on Pseudomonas aeruginosa bacteria using Calvet calorimetry

Antibacterial activity of silver nitrate on Pseudomonas aeruginosa bacteria using Calvet calorimetry

Antimicrobial activity effects of electrolytically generated hypochlorous acid-treated pathogenic microorganisms by isothermal kinetic simulation

Anti-Staphylococcus aureus evaluation of gallic acid by isothermal microcalorimetry and principle component analysis

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