Original research articles

Histidine decarboxylase activity in lactic acid bacteria from wine

Abstract

Histidine decarboxylase activity was investigated in 21 strains of lactic acid bacteria isolated from Argentinian wines. This activity is not widely distributed between them, and occurs significatively only in some strains of Lactobacillus hilgardii.

L.hilgardii 5w was selected for the study on the basis of its constitutive expression. Glucose is necessary for histidine transport. Maximum activity is observed at 37°C and pH 4.0. Enzyme activity is inhibited by SO2 and ethanol at concentrations usually found in wine. L-matic acid and citric acid act as stimulators of the activity.

Authors


Marta Elena Farías

editorialsecretary@oeno-one.eu

Affiliation : Facultad de Bioquímica, Química y Farmacia, UNT and Centro de Referencia para Lactobacilos (CERELA), Chacabuco 145,4000 Tucuman (Argentina)


María Cristina Manca de Nadra

Affiliation : Facultad de Bioquímica, Química y Farmacia, UNT and Centro de Referencia para Lactobacilos (CERELA), Chacabuco 145,4000 Tucuman (Argentina)


Graciela Celestina Rollan

Affiliation : Facultad de Bioquímica, Química y Farmacia, UNT and Centro de Referencia para Lactobacilos (CERELA), Chacabuco 145,4000 Tucuman (Argentina)


Ana María Strasser de Saad

Affiliation : Facultad de Bioquímica, Química y Farmacia, UNT and Centro de Referencia para Lactobacilos (CERELA), Chacabuco 145,4000 Tucuman (Argentina)

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