: Louis Pasteur's 1857 paper, " Mémoire sur la fermentation alcoolique " , proved that alcoholic fermentation is driven by living yeast cells rather than chemical catalysts.
: "Baker’s Yeast (Saccharomyces cerevisiae) and Its Industrial Applications" provides a broad overview of its role in leavening, nutrient bioavailability, and probiotic potential.
If you are looking for the materials used to wrap or store commercial yeast: