How does yeast make bread rise?
Without yeast, our bread would be flatter then pancakes, heavy and hard to digest, The basic ingredients of bread are flour and water, A little yeast and a little time turn this doughy mass into spongy loaves. The work is done by tiny single plants and all they do is eat and multiply. In the process, they give off quantities of carbon dioxide gas which fill heavy dough with small pockets end bubbles. A spoonful of yeast is actually a colony of countless fungus plants small cousins of the mushrooms and larger cousins of the bacteria. Most yeast cells are egg shaped, equally round at each and. Some are round as globes and some are long and sausage shaped, The bread making yeasts are usually oval in shape. Yeast cells are so small that we have to study them under a microscope; If we could make a row of them lengthwise, it would take about 3,000 of them to measure one inch. In width, they measure about 5,000 to an inch. The main difference between the yeasts and their smaller bacteria cous
Yeast Cells Over 600 different species of yeast are known and they are widely distributed in nature. They are found in association with other microorganisms as part of the normal inhabitants of soil, vegetation, marine and other aqueous environments. Some yeast species are also natural inhabitants of man and animals. While some species are highly specialized and found only in certain habitats at certain times of the year, other species are generalists and can be isolated from many different sources. Baker’s yeast is used to leaven bread throughout the world and it is the type of yeast that people are most familiar with. Baker’s yeast is produced from the genus and species of yeast called Saccharomyces cerevisiae. The scientific name of the genus of baker’s yeast, Saccharomyces, refers to “saccharo” meaning sugar and “myces” meaning fungus. The species name, cerevisiae, is derived from the name Ceres, the Roman goddess of agriculture. Baker’s yeast products are made from strains of this
