Gourt > Science > Biology > Genetics > Eukaryotic > Fungal > Saccharomyces
Saccharomyces is a genus in the kingdom of fungi that includes many species of yeast, the name Saccharomyces meaning 'sugar yeast'. The inability to utilize nitrate and ability to ferment various carbohydrates are typical characteristics of Saccharomyces. Colonies can grow and mature in 3 days and exhibit a yellow-tan colour. Many members of this genus are considered very important in food production. One example is Saccharomyces cerevisiae, which is used in making wine, bread, and beer. Other members of this genus include Saccharomyces bayanus, used in making wine, and Saccharomyces boulardii, used in medicine. More recently, Saccharomyces boulardii has been shown to be a sub-species of Saccharomyces cerevisiae.
Brewing yeast are polyploid and belong to the Saccharomyces genera. The brewing strains can be classified into two groups; the ale strains (Saccharomyces cerevisiae, generally used for ale and stout) and the lager strains Saccharomyces pastorianus also known as Saccharomyces cerevisiae, Saccharomyces carlsbergensis or Saccharomyces uvarum). Lager strains are a hybrid strain of Saccharomyces cerevisiae (ale strains) and Saccharomyces bayanus (wine strains) and are often referred to as bottom fermenting. In contrast, ale strains are referred to as top fermenting strains, reflecting their separation characteristics in open square fermenters. Although the two species differ in a number of ways including their response to temperature, sugar transport and utilisation, the Saccharomyces pastorianus and Saccharomyces cerevisiae species are closely related within the Saccharomyces genus.
The presence of yeast in beer was first suggested in 1680, although the genus was not named Saccharomyces until 1837. It was not until 1876 that Louis Pasteur demonstrated the involvement of living organisms in fermentation and in 1888, Hansen isolated brewing yeast and propagated leading to the importance of yeast in brewing. The use of microscopes for the study of yeast morphology and purity was crucial to understanding their functionality.
More on [ Saccharomyces ]
Saccharomyces :: Saccharomycetaceae
@maltosaurus I love homebrewed light American lagers. So much more flavor than the mass produced stuff yet so sessionable
Saccharomyces (Eric Lowe) Thu, 07 Jan 2010 16:50:00 -0000
@maltosaurus I love homebrewed light American lagers. So much more flavor than the mass produced stuff yet so sessionable
@Jimbobs_Beer I need a personal tour of your new brewery :)
Saccharomyces (Eric Lowe) Thu, 07 Jan 2010 16:49:10 -0000
@Jimbobs_Beer I need a personal tour of your new brewery :)
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everythingglobe (EverythingGLOBE.com) Thu, 07 Jan 2010 12:01:26 -0000
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Herbs_Wholesale (Herbs-Wholesale) Thu, 07 Jan 2010 11:28:09 -0000
For sale: Buy Saccharomyces Boulardii + MOS http://bit.ly/5UkUqm posted on @Oodle
I hope the pizza I made with natural Yeast will be ready for dinner, otherwise I'll need to add standard Saccharomyces cerevisiae..
fedrykhamon (Federico) Wed, 06 Jan 2010 14:29:19 -0000
I hope the pizza I made with natural Yeast will be ready for dinner, otherwise I'll need to add standard Saccharomyces cerevisiae..
Saccharomyces Boulardii: Saccharomyces Boulardii - The combination of Saccharomyces boulardii and MOS provides .. http://bit.ly/8TfTjv
seenotice (SeeNotice) Wed, 06 Jan 2010 14:21:19 -0000
Saccharomyces Boulardii: Saccharomyces Boulardii - The combination of Saccharomyces boulardii and MOS provides .. http://bit.ly/8TfTjv
Bloom Laboratory - Study the mechanisms of chromosome segregation. Features a range of yeast data including chromosome spots and dynamics. Includes staff profiles, publications, and related links.
Burgess Laboratory - University of California - Studies mechanisms, regulation and roles of homologous chromosome pairing during meiosis and in nonmeiotic cells. Features research projects, publications, available positions, and related links.
DeRisi Laboratory - University of California - Exploits whole genome approaches to tackle problems in yeast molecular biology and human infectious disease. Includes research data, people, publications, and microarray resources.
Gottschling Laboratory - Study the position effect that occurs near telomeres in the yeast, Saccharomyces cerevisiae. Includes a list of protocols, abstracts of papers from our lab, and a collection of links.
Herskowitz Laboratory - Study yeast genetics including cell asymmetry, gene expression, and signalling. Includes research data, bibliography, lab members, protocols, and related links.
Meta Description: [ A home page for the yeast genetics lab of Prof
. Ira Herskowitz at the Univ. California
San Francisco. It describes our main reasearch goals (cell
cycle, cell polarity, cell asymmetry, gene expression, signalling,
and more), members of the laboratory, and useful protocols and
information for yeas... ]
John McCusker Laboratory - Study fungal genetics and microbiology. Features research projects, publications, and plasmid sequences.
Saccharomyces Genome Database - Commonly known as baker's or budding yeast. Includes sequence analysis and tools, maps, literature, and gene registry .
Webminer - Database used to study gene expression patterns in yeast. Includes a range of information about every ORF in the genome, its promoter, the protein it encodes, and how its mRNA levels change.
Yeast Cell Cycle Analysis Project - Goal is to identify all genes whose mRNA levels are regulated by the cell cycle . Includes a searchable dataset, images and primary data tables, and related links.
Yeast Microarray Global Viewer - Designed to provide biologists with information from genome-wide yeast expression data. Provides customizable tools for expression profiles associated with a set of genes from all published experiments.
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