Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12

Microencapsulation technique appears helpful for more protection of Bifidobacteria against acid inhibitory effect. The effect of medium composition and product inhibitory in free cell culture, as well as the effect of the coating materials in immobilized cells, on biomass growth, acid production and...

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Autores principales:	Jalili,Hasan, Razavi,Hadi, Safari,Mohammad, Amrane,Abdeltif
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso 2010
Materias:	Bifidobacterium immobilization kinetic models medium composition
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000300002
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spelling	oai:scielo:S0717-345820100003000022010-06-08Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12Jalili,HasanRazavi,HadiSafari,MohammadAmrane,Abdeltif Bifidobacterium immobilization kinetic models medium composition Microencapsulation technique appears helpful for more protection of Bifidobacteria against acid inhibitory effect. The effect of medium composition and product inhibitory in free cell culture, as well as the effect of the coating materials in immobilized cells, on biomass growth, acid production and substrate utilization kinetics of Bifidobacterium animalis subsp. lactis Bb 12 in uncontrolled batch fermentation was examined. The Monod and the Luedeking and Piret equations with a product inhibition term involving toxic power terms improved model efficiency for both growth and production. The model showed that media and coating materials had an effect on toxic power terms. Cell immobilization had a positive impact on B. animalis culture. Kinetic analysis revealed the permeability of the coating material had a major impact on culture parameters; permeability increased in the following way: Gellan xanthan < Alginate chitosan < K-Carageenan-locust been, and hence growth parameters x m, maximum specific growth rate (h-1) (Âµm) and monod constant (g lactose L-1) (K S) followed the same trend as well as the linking between growth and production. The link between the microbial environment and cell growth was highlighted by the model. It was shown that for an increasing protect effect of coating materials against environmental deleterious factors, namely a decrease of the permeability, transport limitation occurred, which was disadvantageous for cell formation.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.13 n.3 20102010-05-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000300002en
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Bifidobacterium immobilization kinetic models medium composition
spellingShingle	Bifidobacterium immobilization kinetic models medium composition Jalili,Hasan Razavi,Hadi Safari,Mohammad Amrane,Abdeltif Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
description	Microencapsulation technique appears helpful for more protection of Bifidobacteria against acid inhibitory effect. The effect of medium composition and product inhibitory in free cell culture, as well as the effect of the coating materials in immobilized cells, on biomass growth, acid production and substrate utilization kinetics of Bifidobacterium animalis subsp. lactis Bb 12 in uncontrolled batch fermentation was examined. The Monod and the Luedeking and Piret equations with a product inhibition term involving toxic power terms improved model efficiency for both growth and production. The model showed that media and coating materials had an effect on toxic power terms. Cell immobilization had a positive impact on B. animalis culture. Kinetic analysis revealed the permeability of the coating material had a major impact on culture parameters; permeability increased in the following way: Gellan xanthan < Alginate chitosan < K-Carageenan-locust been, and hence growth parameters x m, maximum specific growth rate (h-1) (Âµm) and monod constant (g lactose L-1) (K S) followed the same trend as well as the linking between growth and production. The link between the microbial environment and cell growth was highlighted by the model. It was shown that for an increasing protect effect of coating materials against environmental deleterious factors, namely a decrease of the permeability, transport limitation occurred, which was disadvantageous for cell formation.
author	Jalili,Hasan Razavi,Hadi Safari,Mohammad Amrane,Abdeltif
author_facet	Jalili,Hasan Razavi,Hadi Safari,Mohammad Amrane,Abdeltif
author_sort	Jalili,Hasan
title	Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
title_short	Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
title_full	Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
title_fullStr	Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
title_full_unstemmed	Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12
title_sort	kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of bifidobacterium animalis subsp. lactis bb 12
publisher	Pontificia Universidad Católica de Valparaíso
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582010000300002
work_keys_str_mv	AT jalilihasan kineticanalysisandeffectofculturemediumandcoatingmaterialsduringfreeandimmobilizedcellculturesofbifidobacteriumanimalissubsplactisbb12 AT razavihadi kineticanalysisandeffectofculturemediumandcoatingmaterialsduringfreeandimmobilizedcellculturesofbifidobacteriumanimalissubsplactisbb12 AT safarimohammad kineticanalysisandeffectofculturemediumandcoatingmaterialsduringfreeandimmobilizedcellculturesofbifidobacteriumanimalissubsplactisbb12 AT amraneabdeltif kineticanalysisandeffectofculturemediumandcoatingmaterialsduringfreeandimmobilizedcellculturesofbifidobacteriumanimalissubsplactisbb12
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Kinetic analysis and effect of culture medium and coating materials during free and immobilized cell cultures of Bifidobacterium animalis subsp. lactis Bb 12

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