The influence of temperature on lactic acid fermentation is
related to the growth kinetic parameters of LAB, lactic acid production,
and substrate consumption. Among LAB, most lactic acid
productivity studies have been conducted at temperatures of
30–43 ◦C. We recently isolated a new LAB strain, Lb. delbrueckii QU
41, that exhibits a high thermotolerance and produces d-lactic acid
at temperatures
≥50 ◦C