Premium
Regulation of hdc expression and HDC activity by enological factors in lactic acid bacteria
Author(s) -
Landete J.M.,
Pardo I.,
Ferrer S.
Publication year - 2008
Publication title -
journal of applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.889
H-Index - 156
eISSN - 1365-2672
pISSN - 1364-5072
DOI - 10.1111/j.1365-2672.2008.03865.x
Subject(s) - oenococcus oeni , malolactic fermentation , lactic acid , biochemistry , histidine decarboxylase , citric acid , fructose , enzyme assay , bacteria , chemistry , enzyme , malic acid , food science , pyruvate decarboxylase , biology , histidine , alcohol dehydrogenase , genetics
Aims: The aim of this work was to study the influence of enological factors on the histidine decarboxylase gene ( hdc ) expression and on histidine decarboxylase enzyme (HDC) activity in Lactobacillus hilgardii , Pediococcus parvulus and Oenococcus oeni . Methods and Results: Cell extracts and whole cells were used. Glucose, fructose, malic acid and citric acid diminished the hdc expression. Ethanol did not increase hdc expression or activity in cells, but increased HDC activity. Temperature and pH had effect on the activity of HDC but not on hdc expression. Tartaric acid and l ‐lactic acid, and sulphur dioxide (SO 2 ) had no effect on enzyme synthesis and activity. Bacterial species differ in the relative enzymatic activity but all the factors affected similarly to L. hilgardii , P. parvulus and O. oeni . Conclusions: The hdc gene expression was lowered by glucose, fructose, malic acid, and citric acid, whereas ethanol enhanced the HDC enzyme activity. The conditions that normally occur during malolactic fermentation and later on, could favour histamine production. SO 2 could prevent bacterial growth, but does not diminish the HDC enzyme activity. Significance and Impact of the Study: Information on hdc expression and HDC activity can contribute to the prevention of histamine formation during wine production and storage.