Baker's and Brewer's Yeast



     Saccharomyces cerevisiae would not be a sustainable food source for human on its own but since it interacts with other species and ingredients to make us breads, beers, wines, ect. it doesn't provide some form of nutrition.  For example beer wouldn't be beer without some strain of Saccharomyces cerevisiae and barley and bread wouldn't bread without wheat of flour.  This species of yeast is also found in yogurt.  It interacts with the bacteria Lactobacillus bugaricus to make yogurt and keefer. 

Grapes by Zest-pk

Wheat_01 by NDSU Ag Comm

     Other species that interact with it are a variety of fruit species, some examples are cranberries, bananas, blueberries, apples, and grapesSaccharomyces cerevisiae uses these fruits as a source of food.  It is also how humans make wines and other alcoholic beverages.  Have you ever had  orange juice that was left out on the counter all day and then tasted fermented?  That’s because the yeast started breaking it down for food.  All fungi are heterotrophic meaning they rely on other organisms for food.  They usually eat on dead organisms making them decomposers.  The yeast turns the sugars from fruit into energy and CO2 and in some cases alcohol.  To learn more about this organisms nutrition check out the nutrition page. 








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