Louis Pasteur discovered yeast fungus. This led to the creation of pasteurization.
Yeast had been around for thousands of years. The ancient Egyptians used yeast.
Nutritional yeast is a form of deactivated yeast called "saccharomyces cerevisiae." It is made by mixing sugarcane and beet molasses, then harvesting, washing, drying and packaging the yeast.
In colonial times people saved their breads yeast by putting the bread on the window sill to collect the natural yeast from the air. They also collected or made their yeast from sourdough.
Yeast expands because in the heat, it eats and digests sugar, and then it produces carbon dioxide gas.
Actually yeast was discovered by the Egyptians, so they got it from Egypt.
Antarctica
yeast
Anton van Leeuwenhoek discovered yeast cells under the microscope in the 17th century. He was the first to observe and describe the structure and reproduction of yeast, contributing to our understanding of microorganisms and their role in fermentation processes.
I believe it was Louis Pasteur while he was working on finding the cause for the failing French wine industry. While others had observed yeast cells in the microscope before him, winemaking was at the time believed to be a purely chemical process and the microbes present were inconsequential. Pasteur (a chemist hired to solve this "chemical" problem) showed that the yeast cells fermented the juice making wine, but bacterial contaminates fermented the alcohol to lactic acid ruining the wine (showing the problem was really biological, not "chemical" as previously believed).
Louis Pasteur discovered yeast fungus. This led to the creation of pasteurization.
Marmite is not patented. It was discovered in the late 19th century that discarded brewers' yeast could be concentrated and eaten.
Ancient Chinese used red yeast rice, still the basis for Mevastatin. Red yeast rice is now ruled illegal for sale by the FDA..... See: http://en.wikipedia.org/wiki/Statin
See more date 4000 BC: the Egyptians discovered how to bake leavened bread using yeast.
Theodore Shwann was a physiologist from Germany. He discovered Schwann cells, yeast, and pepsin. He also was the person who started the word, metabolism.
Anton discovered microorganisms, such as bacteria and yeast, using a simple microscope he made himself. This discovery laid the foundation for the field of microbiology.
Fleischmann's yeast is the trade name for baker's yeast. Baker's yeast is generally Saccharomyces cerevisiae.