Szent István University, Faculty of Food Sciences, Department of Microbiology and Biotechnology Please ask the editor of the journal.
Department of Refrigeration and Livestock Products' Technology, Faculty of Food Science, Szent István University Department of Refrigeration and Livestock Products Technology H-1118 Budapest, Somlói út 14-16. Hungary Budapest
Conductimetry as an alternative data capture method for following microbial growth has a great potential as a research tool of predictive microbiology. In spite of this fact there is only a limited number of applications using conductimetric data for model generation. In this study the growth of single strains of Listeria monocytogenes and Lactococcus lactis was tested in 5 media using a RABITinstrument. The goal of the work was to find selective growth media for Listeria and Lactococcus, respectively, in order to study their interaction in mixed-culture using the conductimetric technique. Whitley Anaerobic broth, Whitley Impedance broth and modified Whitely Impedance broth (Whitley Impedance broth + Chloramphenicol 7 mg l &1) were not suitable for following selectively the growth of Lactococcus lactis or Listeria monocytogenes in a mixed culture of the two bacteria. BiMedia 630 A for Lactococcus lactis and Bimedia 403 A for Listeria monocytogenes satisfied the demands raised by conductance measurement. Linear correlations were established between the graphically estimated TTD values of the conductance curves and the logarithmic numbers of colony forming units (CFU). The correlations were very strong in each case (determination coefficients (R 2) of the linear regression were higher than 0.98 at both medium-strain combinations). However, in BiMedia 630 Listeria monocytogenes was capable of slow growth, therefore, this medium would be feasible for studying microbial interactions if only low concentrations of Listeria (less than 10 6 CFU ml &1) were present in the mixed culture.
Baumgart, J., Sieker, S. & Vogelsang, B. (1994): Listeria monocytogenes in Hackfleisch. Nachweis mit der Impedanz-Methode und einem neuen Selektivmedium. Fleischwirtschaft, 74, 647-648.
'Listeria monocytogenes in Hackfleisch. Nachweis mit der Impedanz-Methode und einem neuen Selektivmedium.' () 74Fleischwirtschaft: 647-648.
Listeria monocytogenes in Hackfleisch. Nachweis mit der Impedanz-Methode und einem neuen Selektivmedium.Fleischwirtschaft74647648)| false
Lindberg, C. W. & Borch, E. (1994): Predicting the aerobic growth of Y. enterocolitica O3 at different pH-values, temperatures and L-lactate concentrations using conductance measurements. Int. J. Fd Microbiol, 22, 141-153.
'Predicting the aerobic growth of Y. enterocolitica O3 at different pH-values, temperatures and L-lactate concentrations using conductance measurements.' () 22Int. J. Fd Microbiol: 141-153.
Predicting the aerobic growth of Y. enterocolitica O3 at different pH-values, temperatures and L-lactate concentrations using conductance measurements.Int. J. Fd Microbiol22141153)| false
Rule, P. (1997): Measurement of microbial. activity by impedance, -in: Tortorello, M. L. & Gendel, S. M. (Eds) Food microbiological analysis. New technologies. Marcel Dekker, Inc., New York, pp. 305-314.
Vidács, I. & Beczner, J. (1998a): Application of conductance measurement for studying the combined effect of heat and pH on Clostridium sporogenes PA3679/S. De ware(n) Chemicus, 28, pp. 81-82.
'Application of conductance measurement for studying the combined effect of heat and pH on Clostridium sporogenes PA3679/S' () 28De ware(n) Chemicus: 81-82.
Application of conductance measurement for studying the combined effect of heat and pH on Clostridium sporogenes PA3679/SDe ware(n) Chemicus288182)| false
Regional discounts on country of the funding agency
World Bank Lower-middle-income economies: 50%
World Bank Low-income economies: 100%
Editorial Board / Advisory Board members: 50%
Corresponding authors, affiliated to an EISZ member institution subscribing to the journal package of Akadémiai Kiadó: 100%
Online subsscription: 736 EUR / 920 USD
Print + online subscription: 852 EUR / 1064 USD
Online subscribers are entitled access to all back issues published by Akadémiai Kiadó for each title for the duration of the subscription, as well as Online First content for the subscribed content.
Purchase per Title
Individual articles are sold on the displayed price.
2021 Volume 50
Magyar Tudományos Akadémia
H-1051 Budapest, Hungary, Széchenyi István tér 9.
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.