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Relevance of diffusion through bacterial spore coats/membranes and the associated concentration boundary layers in the initial lag phase of inactivation: a case study for Bacillus subtilis with ozone and monochloramine


, : Relevance of diffusion through bacterial spore coats/membranes and the associated concentration boundary layers in the initial lag phase of inactivation: a case study for Bacillus subtilis with ozone and monochloramine. Mathematical Biosciences 199(2): 175-187

Disinfectants are generally used to inactivate microorganisms in solutions. The process of inactivation involves the disinfectant in the liquid diffusing towards the bacteria sites and thereafter reacting with bacteria at rates determined by the respective reaction rates. Such processes have demonstrated an initial lag phase followed by an active depletion phase of bacteria. This paper attempts to study the importance of the combined effects of diffusion of the disinfectant through the outer membrane of the bacteria and transport through the associated concentration boundary layers (CBLs) during the initial lag phase. Mathematical equations are developed correlating the initial concentration of the disinfectant with time required for reaching a critical concentration (C*) at the inner side of the membrane of the cell based on diffusion of disinfectant through the outer membranes of the bacteria and the formation of concentration boundary layers on both sides of the membranes. Experimental data of the lag phases of inactivation already available in the literature for inactivation of Bacillus subtilis spores with ozone and monochloramine are tested with the equations. The results seem to be in good agreement with the theoretical equations indicating the importance of diffusion process across the outer cell membranes and the resulting CBL's during the lag phase of disinfection. (c) 2005 Elsevier Inc. All rights reserved.

US$19.90

PMID: 16387333

DOI: 10.1016/j.mbs.2005.10.001


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Tsai-Chae, A.H.; Nagata, D.K., 2008: Asian values and perceptions of intergenerational family conflict among Asian American students. This investigation explores the perceptions of intergenerational family conflict among 93 Asian American college students from immigrant families in relation to reported discrepancies in Asian values with their parents, behavioral acculturation, g...

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Heitmann, W., 1968: The influence of various parameters on the refractive index of evaporated dielectric films. The influence of residual gas pressure and of deposition rate on the refractive index of Na(3)AlF(6) and ThF(4) films was investigated. Transition from high to medium deposition rates causes a distinct decrease of the refractive index, but a furth...

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Pretzmann, G., 1975: Potamiden und Parathelphusiden aus Bhutan. Annalen naturh Mus Wien, 79: 609-613

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Yu, L.; Bloem, L.J., 1996: Use of polymerase chain reaction to screen phage libraries. Methods in Molecular Biology 58: 335-339

Deramond, H.; Wright, N.T.; Belkoff, S.M., 1999: Temperature elevation caused by bone cement polymerization during vertebroplasty. Percutaneous vertebroplasty (PVP), whereby polymethyl-methacrylate cement is injected into the vertebral body (VB), has been used to successfully treat various spinal lesions. The mechanism responsible for the palliative effect of PVP is unknown,...

Kushnarenko N.I.; Eremeeva A.M.; Moshchanskii Y.D.; Kolomeets R.G., 1970: Efforts to reduce the level of whole body vibration on vibration platforms in a reinforced concrete plant. Gigiena Truda i Professional'nye Zabolevaniya 14(2): 44