cerevisiae, and in the United States around the turn of the century centrifuges were used for concentrating the yeast, making modern commercial yeast possible, and turning yeast production into a major industrial endeavor.
The slurry yeast made by small bakers and grocery shops became cream yeast, a suspension of live yeast cells in growth medium, and then compressed yeast, the fresh cake yeast that became the standard leaven for bread bakers in much of the Westernized world during the early 20th century.
cerevisiae is one of the long-time classic model organisms that remains highly relevant today.
As one of the simplest eukaryotes (containing membrane bound organelles), and indeed the first eukaryotic organism to be sequenced with a genome size of ~12 Mbp, it can be used for studies of common pathways in higher organisms such as humans.
Refinements in microbiology following the work of Louis Pasteur led to more advanced methods of culturing pure strains.
In 1879, Great Britain introduced specialized growing vats for the production of S.
It is one of the most intensively studied eukaryotic model organisms in molecular and cell biology, much like Escherichia coli as the model bacterium.
It is the microorganism behind the most common type of fermentation. cerevisiae cells are round to ovoid, 5–10 μm in diameter.
"Saccharomyces" derives from Latinized Greek and means "sugar-mold" or "sugar-fungus", saccharon (σάκχαρον) being the combining form "sugar" and myces (μύκης) being "fungus". Other names for the organism are: This species is also the main source of nutritional yeast and yeast extract.
In the 19th century, bread bakers obtained their yeast from beer brewers, and this led to sweet-fermented breads such as the Imperial "Kaisersemmel" roll, which in general lacked the sourness created by the acidification typical of Lactobacillus.