African Journal of
Food Science

  • Abbreviation: Afr. J. Food Sci.
  • Language: English
  • ISSN: 1996-0794
  • DOI: 10.5897/AJFS
  • Start Year: 2007
  • Published Articles: 886

Full Length Research Paper

Modeling the growth dynamics of Lactobacillus lactis CWBI B-1410: Effect of changes in glucose and nitrogenized matter in the Man Rogosa Sharpe (MRS) culture media

Modou DIENG
  • Modou DIENG
  • Laboratoire d’analyses et Essais, École Supérieure Polytechnique / University Cheikh Anta DIOP University in Dakar, Sénégal.
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Ndèye Adiara NDIAYE
  • Ndèye Adiara NDIAYE
  • Laboratoire de Microbiologie, École Supérieure Polytechnique / University Cheikh Anta DIOP in Dakar, Sénégal.
  • Google Scholar
Mouhamed NDONG
  • Mouhamed NDONG
  • Canadian Rivers Institute, Department of Civil Engineering, University New Brunswick, Fredericton, NB E3B 5E1, Canada.
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Ndèye Coumba TOURE/KANE
  • Ndèye Coumba TOURE/KANE
  • Faculté de Médecine / University Cheikh Anta DIOP in Dakar, Sénégal.
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  •  Received: 02 May 2020
  •  Accepted: 21 July 2020
  •  Published: 31 August 2020

Abstract

Food preservation is a big challenge for the industries. The mechanisms of preservation involved microorganisms such as lactic acid bacteria. Modeling the micro-organisms growth is a very useful information to well-understand their behavior and to propose the best conditions for food preservation. In this way, this study was to propose a mathematical model of the dynamical growth of Lactococcus lactis CWBI-B1410 which play a main role for the bio-conservation of fish. This study is conducted by varying the concentration of glucose and nitrogenized matter. The results showed that the mathematical model predicted the growth of L. lactis CWBI-B1410. The curves that are predicted are exactly those that can be observed experimentally. The results showed that the production of biomass by L. lactis CWBI-B1410 is obtained on the MRS medium composed of 15 g of glucose per liter and 40 g of nitrogenous material per liter. From the obtained results, it could be clearly advocated that for two tests with the same amount of nitrogenous matter, it is possible to achieve economies of scale in glucose while maintaining the same biomass performance.
 
Key words: Mathematical models, lactic bacteria, Lactococcus lactis CWBI-B1410, glucose, nitrogenous matter.