Artículo
Esterase activities and biochemical properties of lactic acid bacteria isolated from goat´s milk cheese in Argentina
Taboada, Natalia Verónica
; Lopez Alzogaray, Maria Soledad; Abeijon Mukdsi, Maria Claudia
; Medina, Roxana Beatriz
Fecha de publicación:
09/2014
Editorial:
David Publishing
Revista:
Journal of Agricultural Science and Technology B
ISSN:
2161-6264
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Twenty-two lactic acid bacteria (LAB) strains isolated from Argentinean goat dairy products were evaluated for its biochemical properties and esterase activities relevant to flavor development. Streptococcus thermophiles (UNSE314), Lactobacillus (L.) delbrueckii subsp. bulgaricus (UNSE309), L. rhamnosus (UNSE308), L. plantarum (UNSE287, UNSE316, UNSE317) and Pediococcus pentosaceus (UNSE315) strains presented high acidifying activity. All strains tested metabolized citrate and produced diacetyl-acetoin in goat milk. Based on these results, ten strains with the best performance in diverse technological properties were selected to determine esterolytic activity. In all evaluated strains, esterase specific activity (ESA) was detected on a-naphthyl (a-NA) acetate and B-naphthyl (B-NA) acetate, propionate, caprylate and a-NA butyrate. No activity was detected on B-NA laurate. The highest values were detected when using a-NA instead of B-NA derivatives as substrate. In Pediococcus strains, wide variability in ESA were observed, which were species- and strain-specific. These results allow us to select strains with biochemical properties and esterase activities to design starter and adjunct cultures that contribute to flavor development during cheese ripening, thus preserving the typical organoleptic characteristics of Argentinean goat cheeses.
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Identificadores
Colecciones
Articulos(CERELA)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Articulos de CENTRO DE REFERENCIA PARA LACTOBACILOS (I)
Citación
Taboada, Natalia Verónica; Lopez Alzogaray, Maria Soledad; Abeijon Mukdsi, Maria Claudia; Medina, Roxana Beatriz; Esterase activities and biochemical properties of lactic acid bacteria isolated from goat´s milk cheese in Argentina; David Publishing; Journal of Agricultural Science and Technology B; 4; 9-2014; 752-760
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