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Sinossi
Yeasts are the active agents responsible for three of our most important foods - bread, wine, and beer - and for the almost universally used mind/ personality-altering drug, ethanol. Anthropologists have suggested that it was the production of ethanol that motivated primitive people to settle down and become farmers. The Earth is thought to be about 4. 5 billion years old. Fossil microorganisms have been found in Earth rock 3. 3 to 3. 5 billion years old. Microbes have been on Earth for that length of time carrying out their principal task of recycling organic matter as they still do today. Yeasts have most likely been on Earth for at least 2 billion years before humans arrived, and they playa key role in the conversion of sugars to alcohol and carbon dioxide. Early humans had no concept of either microorganisms or fermentation, yet the earliest historical records indicate that by 6000 B. C. they knew how to make bread, beer, and wine. Earliest humans were foragers who col lected and ate leaves, tubers, fruits, berries, nuts, and cereal seeds most of the day much as apes do today in the wild. Crushed fruits readily undergo natural fermentation by indigenous yeasts, and moist seeds germinate and develop amylases that produce fermentable sugars. Honey, the first con centrated sweet known to humans, also spontaneously ferments to alcohol if it is by chance diluted with rainwater. Thus, yeasts and other microbes have had a long history of 2 to 3.
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Yeast technology (AVI Books)
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Yeast technology
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Yeast technology
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Hardcover. Condizione: As New. No Jacket. Pages are clean and are not marred by notes or folds of any kind. ~ ThriftBooks: Read More, Spend Less. Codice articolo G0442318928I2N00
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Yeast Technology
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Van Nostrand Reinhold Company, 1991
ISBN 10: 0442318928
ISBN 13: 9780442318925
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8vo Hardcover. Condizione: Very Good. Condizione sovraccoperta: Very Good. 2nd Edition. 454p. Contents are unmarked on bright pages. Black boards are pointed with white lettering. Purple and orange jacket is glossy and unclipped with a sunned spine. Binding is tight, hinges are secure. Faint foxing on endpapers and text-block. Codice articolo 104976
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