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CHRONOLOGICAL DEVELOPMENTS & SCOPE OF BIOPROCESS TECHNOLOGY ANCIENT BIOPROCESS TECHNOLOGY The use of yeasts dates back to ancient days. Sumarians and Babylonians were drinking beer by 6000 BC; they were the first to convert sugar to alcohol by yeasts. By 4000 BC, the Egyptians had discovered that carbon dioxide generated by the action of brewer’ s yeast could leaven bread. Ancient peoples were ...

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