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Artículo

Factors stimulating riboflavin produced by Lactobacillus plantarum CRL 725 grown in a semi-defined medium

Juarez del Valle, MarianelaIcon ; Laiño, Jonathan EmilianoIcon ; Savoy, GracielaIcon ; Leblanc, Jean Guy JosephIcon
Fecha de publicación: 03/2017
Editorial: Wiley VCH Verlag
Revista: Journal of Basic Microbiology
ISSN: 0233-111X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas; Otras Ciencias Biológicas

Resumen

Riboflavin (vitamin B2) is one of the B-group water-soluble vitamins and is essential for energy metabolism of the cell. The aim of this study was to determine factors that affect riboflavin production by Lactobacillus (L.) plantarum CRL 725 grown in a semi defined medium and evaluate the expression of its rib genes. The factors found to enhance riboflavin production in this medium were incubation at 30 °C, and the addition of specific medium constituents, such as casamino acids (10 g L−1), guanosine (0.04 g L−1), and sucrose as carbon source (20 g L−1). In these conditions, higher riboflavin concentrations were directly associated with significant increases in the expression of ribA, ribB, and ribC genes. The culture conditions defined in this work and its application to a roseoflavin resistant mutant of L. plantarum allowed for a sixfold increase in riboflavin concentrations in our semi-defined medium which were also significantly higher than those obtained previously using the same strain to ferment soymilk. These conditions should thus be evaluated to increase vitamin production in fermented foods.
Palabras clave: Chemically Defined Medium , Lactic Acid Bacteria , Rib Gene Expression , Riboflavin , Vitamin Biosynthesis
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/36759
DOI: http://dx.doi.org/10.1002/jobm.201600573
URL: http://onlinelibrary.wiley.com/doi/10.1002/jobm.201600573/abstract
Colecciones
Articulos(CERELA)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Citación
Juarez del Valle, Marianela; Laiño, Jonathan Emiliano; Savoy, Graciela; Leblanc, Jean Guy Joseph; Factors stimulating riboflavin produced by Lactobacillus plantarum CRL 725 grown in a semi-defined medium; Wiley VCH Verlag; Journal of Basic Microbiology; 57; 3; 3-2017; 245-252
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