Saccharomyces cerevisiae
Also known as brewer's yeast, baking yeast, baker's yeast, yeast, budding yeast
species of fungus
AI overview
Saccharomyces cerevisiae is a species of fungus commonly known as baker's yeast or brewer's yeast, which has been used for thousands of years to make bread and beer. It matters because it is one of the most thoroughly studied organisms in science and serves as a crucial model for understanding how cells work, making it fundamental to both practical applications and biological research.
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Species
baker's yeast
Saccharomyces cerevisiae
SPECIES
- KingdomFungi
- PhylumAscomycota
- ClassSaccharomycetes
- OrderSaccharomycetales
- FamilySaccharomycetaceae
Habitatmarine, brackish, freshwater
Saccharomyces boulardii è un ceppo di lievito tropicale isolato per la prima volta nel 1923 dallo scienziato francese Henri Boulard dalla ciliegia della Cina (litchi) e dal frutto del mangostano. Esso è legato, ma distinto dal Saccharomyces cerevisiae in diverse proprietà tassonomiche, metaboliche e genetiche. Il S. boulardii ha dimostrato di mantenere e ripristinare la flora naturale del grande e piccolo intestino ed è classificato come un probiotico. Boulard isolò il lievito, dopo aver osservato i nativi del sud est asiatico masticare la buccia di litchi e di mangostano nel tentativo di controllare i sintomi del colera. È dimostrato che il S. boulardii non è patogeno, non sistemico (rimane nel tratto gastrointestinale, senza diffondersi in altre parti del corpo), vive e si riproduce ad una temperatura insolitamente alta di 37 °C. È resistente agli acidi biliari, alla degradazione proteolitica, ai trattamenti antibatterici e antibiotici, e attraversa indenne lo stomaco.
via GBIF
Article
Saccharomyces cerevisiae (/ˌsɛrəˈvɪsi.iː/), also called brewer's yeast or baker's yeast, is a species of yeast (single-celled fungal microorganisms). The species has been instrumental in winemaking, baking, and brewing since ancient times. It is believed to have been originally isolated from the skin of grapes. 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 which causes many common types of fermentation. S. cerevisiae cells are round to ovoid, 5–10 μm in diameter. It reproduces by budding.
Many proteins important in human biology were first discovered by studying their homologs in yeast; these proteins include cell cycle proteins, signaling proteins, and protein-processing enzymes. S. cerevisiae is currently the only yeast cell known to have Berkeley bodies present, which are involved in particular secretory pathways. Antibodies against S. cerevisiae are found in 60–70% of patients with Crohn's disease and 10–15% of patients with ulcerative colitis, and may be useful as part of a panel of serological markers in differentiating between inflammatory bowel diseases (e.g. between ulcerative colitis and Crohn's disease), their localization, and severity.