O. oeni is the preferred species used to conduct the malolactic fermentation (MLF) ) in wines due to
its acid tolerance and its contribution to the wine flavor. The MLF is a biological process of wine
deacidification in which the dicarboxylic L-malic acid is converted to the monocarboxylic L-lactic acid
and carbon dioxide. O. oeni strains have complex nutritional requirements [16, 17]. Amino acids
produced from proteases hydrolysis are important for the growth of this microorganism, both as nitrogen
and carbon source [18, 19].