INVESTIGADORES
MEDINA Roxana Beatriz
artículos
Título:
CITRATE UTILIZATION BY HOMO AND HETEROFERMENTATIVE LACTOBACILLI
Autor/es:
MEDINA DE FIGUEROA, R.B.; ÁLVAREZ, M.F.; PESCE DE RUIZ HOLGADO, A.; OLIVER, G.; SESMA, F.
Revista:
Microbiological Research
Editorial:
Elsevier
Referencias:
Año: 2000 vol. 154 p. 313 - 320
ISSN:
0944-5013
Resumen:
Citrate utilization by several homo and heterofermentative lactobacilli was determined in the Kempler and McKay and calcium citrate media. The last medium with glucose best permitted to distinguish citrate fermenting lactobacilli. Lactobacillus rhamnosus ATCC 11443, Lactobacillus zeae ATCC 15820 and Lactobacillus plantarum ATCC 8014 used citrate as only energy source, whereas in the rest of the studied strains, glucose and citrate were cometabolized. Some lactobacilli strains produced aroma compounds from citrate. Citrate transport experiments suggested that all strains studied presented a citrate transport system inducible by citrate. The levels of induction were variable in between several strains. Dot blot experiment showed that lactobacilli do not present an equivalent plasmid coded citrate permease.
