Fermentation Notes.docx

Fermentation Notes.docx - Fermentation Notes History on...

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Fermentation Notes 1/30/18 History on Fermentation and Background: Fermentation was historically used as a means of preserving food. Many farmers have the problem of their crop finishing at the same time. Fermenting beverages outcompete bad microbes and then allow you to drink. We have evidence of fermented drinks from 9,000 years ago A cave in Armenia 4100BCE is the oldest winery. 7,000 years ago was the oldest evidence of fermented foods; old fish was wrapped in seal fat Microbes have been used in cooking in many cultures for milliennia: preservation purify intoxify flavor Wine and the ancient Mesopotamians: Sumerian goddess of beer; a beer recipe written down on a stone tablet which dates back to 1800BCE What is a microbe? A micro organism o Ex. Yeast, fungi, Until very recently we had no idea how these foods were made or that microbes existed: Antoni Van Leeuwenhoek was the first guy to see a microbe The first person to realize mcirobes have a role in food production Louis Pasteur; first person to realize that yeast is a maker of wine How do microbes cook? Microbes have a very fast generation time ; aka they break down sugar very quickly N(g) = N(initial)2^g g = T/generation time In fermentation; when microbes hit their carrying capacity this is where most interesting fermentations happen
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Your lunch… What happens to your lunch when you breath?
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