Premium
Adaptation of two groups of Oenococcus oeni strains to red and white wines: the role of acidity and phenolic compounds
Author(s) -
Breniaux M.,
Dutilh L.,
Petrel M.,
Gontier E.,
CampbellSills H.,
DelerisBou M.,
Krieger S.,
Teissedre P.L.,
Jourdes M.,
Reguant C.,
Lucas P.
Publication year - 2018
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/jam.13946
Subject(s) - oenococcus oeni , wine , white wine , malolactic fermentation , wine color , food science , wine fault , biology , strain (injury) , white (mutation) , bacteria , lactic acid , biochemistry , genetics , gene , anatomy
Aims Oenococcus oeni is the lactic acid bacteria species which is the most adapted to wine. Recently, two groups of strains that form two genetic lineages were described in red and white Burgundy wines. The aim of this study was to analyse the phenotypes of these strains in order to determine how they have adapted specifically to either red or white wine. Methods and Results Four strains from each group were tested in grape must and in wines to evaluate their tolerance to pH and to phenolic compound content. White wine strains proved to be the most tolerant to low pH , both in grape must and in wine, whereas they were inhibited by the presence of grape tannins in wine. Red wine strains were more sensitive to acidity, but very resistant to phenolic compounds. Conclusions The results suggest that pH and phenolic compounds drive strain selection at several stages of wine production. Significance and Impact of the Study Although it is well known that O. oeni is well adapted to wine, this study shows that strains of some genetic lineages within this species have evolved to adapt better than others to specific types of wines.