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Revista Científica
Article . 2010
Data sources: DOAJ
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Producción de acetaldehído en leche por cultivos iniciadores simples y múltiples

Authors: Lilibeth Cabrera; Alexis Ferrer; Graciela Ojeda de Rodríguez; Gisela Colina;

Producción de acetaldehído en leche por cultivos iniciadores simples y múltiples

Abstract

A cultivos simples y múltiples con leche descremada reconstituida al 10% estéril, constituidos por once cepas de Enterococcus faecalis, siete cepas de Lactobacillus casei y cuatro cepas de Enterobacter aerogenes, se les determinó la producción de acetaldehído, utilizando la técnica cromatográfica (GC) headspace. Los cultivos fueron previamente colocados en baño de agua a 60°C para permitir el paso del acetaldehído a su estado gaseoso. Los resultados mostraron la producción activa de acetaldehído por parte de las cepas bacterianas en cultivos simples y múltiples con diferencias significativas entre especies y entre cepas de la misma especie (P < 0,05). Las cepas de E. aerogenes Ea1 y Ea2 y de E. faecalis Ef7, Ef8, Ef9 y Ef10 produjeron los mayores niveles de acetaldehído en cultivos simples (5,8-6,0 ppm y 2,6-2,8 ppm, respectivamente) mientras que las cepas de L. casei produjeron los niveles menores (0,4-0,6 ppm). En cultivos múltiples, las combinaciones Enterococcus-Enterobacter produjeron más acetaldehído (2,9 ppm, P < 0,05) que las combinaciones Lactobacillus-Enterobacter (2,5 ppm) y las Enterococcus-Lactobacillus-Enterobacter (2,1 ppm). Debido a que todas las combinaciones produjeron concentraciones relativamente similares de acetaldehído, se recomienda el uso de cualquiera de ellas para garantizar el sabor y olor característicos del queso tipo Palmita.

Keywords

cultivos iniciadores, leche, SF191-275, Veterinary medicine, SF600-1100, queso, Cattle, acetaldehído, headspace GC

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold