Abstract. Saccharomyces cerevisiae is the principal
yeast used in modern fermentation processes, including
winemaking, breadmaking, and brewing.
From residue present inside one of the earliest known
wine jars from Egypt, we have extracted, amplified,
and sequenced ribosomal DNA from S. cerevisiae.
These results indicate that this organism was probably
responsible for wine fermentation by at least 3150
B.C. This inference has major implications for the
evolution of bread and beer yeasts, since it suggests
that S. cerevisiae yeast, which occurs naturally on the
surface bloom of grapes, was also used as an inoculum
to ferment cereal products.
Abstract. Saccharomyces cerevisiae is the principal
yeast used in modern fermentation processes, including
winemaking, breadmaking, and brewing.
From residue present inside one of the earliest known
wine jars from Egypt, we have extracted, amplified,
and sequenced ribosomal DNA from S. cerevisiae.
These results indicate that this organism was probably
responsible for wine fermentation by at least 3150
B.C. This inference has major implications for the
evolution of bread and beer yeasts, since it suggests
that S. cerevisiae yeast, which occurs naturally on the
surface bloom of grapes, was also used as an inoculum
to ferment cereal products.
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