What You Need to Know
During fermentation, lactic acid bacteria such as Lactobacillus plantarum and Pediococcus pentosaceus convert fermentable sugars into lactic acid, while Saccharomyces cerevisiae produces ethanol and volatile aroma compounds. The combined metabolic activities lower the pH to 4.5–5.5 and generate a characteristic sour, yeasty flavor profile.
The Science
Primary Reaction
Spontaneous lactic acid fermentation of corn masa by lactic acid bacteria and yeast