Saccharomyces uvarum explained

Saccharomyces uvarum is a species of yeast that is commonly found in fermented beverages, particularly those fermented at colder temperatures.^[1] It was originally described by Martinus Willem Beijerinck in 1898, but was long considered identical to S. bayanus.^{[1] [2]} In 2000 and 2005, genetic investigations of various Saccharomyces species indicated that S. uvarum is genetically distinct from S. bayanus and should be considered a unique species.^{[1] [2]}

It is a bottom-fermenting yeast, so-called because it does not form the foam on top of the wort that top-fermenting yeast does.

Notes and References

1. Saccharomyces uvarum, a proper species with Saccharomyces sensu stricto . FEMS Microbiology Letters . Pulvirenti A, Nguyen HV, Caggia C, Giudici P, Rainieri S, Zambonelli C . 192 . 2 . 2000 . 191–196 . 10.1111/j.1574-6968.2000.tb09381.x. 11064194 . free .
2. 10.1016/j.femsyr.2004.12.004. 15691752. Evolutionary relationships between the former species Saccharomyces uvarum and the hybrids Saccharomyces bayanus and Saccharomyces pastorianus; reinstatement of Saccharomyces uvarum (Beijerinck) as a distinct species. FEMS Yeast Research. 5. 4–5. 471–483. 2005. Nguyen. H.. Gaillardin. C.. free.