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Title

Bacteriocin production and pH gradient. Some mathematical models and their problems.

AuthorsVázquez, José Antonio ; Mirón, Jesús ; González Fernández, Pilar ; Murado García, Miguel Anxo
KeywordsBacteriocins
Production
Ph gradient
Mathematical model
Issue Date2006
PublisherElsevier
CitationEnzyme and Microbial Technology 37(1): 54-67 (2006)
AbstractThe response to stepped pH profiles obtained by successive alkalisation was examined in cultures of seven species of lactic acid bacteria. For at least four species, these conditions, combined with glucose fed-batch, promoted greater efficiency of nutrient consumption, stimulated biomass and bacteriocin production, and prolonged the productive period of the culture. In addition, they determined the appearance of heterofermentative phases absent in conventional culture, with pH either in spontaneous evolution or controlled to a stable level. The advantages and difficulties of various approaches here developed for the mathematical modeling of this system are discussed in useful terms to incorporate with control purposes to the software of a biorreactor, and the implication of the pH gradient is suggested in results from other authors, relative to the metabolic typology and production conditions of bacteriocins.
Description14 páginas, 15 figuras, 4 tablas, 1 apéndice
Publisher version (URL)http://dx.doi.org/10.1016/j.enzmictec.2005.01.038
URIhttp://hdl.handle.net/10261/51036
DOI10.1016/j.enzmictec.2005.01.038
ISSN0141-0229
E-ISSN1879-0909
Appears in Collections:(IIM) Artículos
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