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YEAST CELLS

TOPIC : Yeast cells in the food industry

QUESTIONS : 1. What is yeast ? 2. What is yeast used in ? 3. What was the earliest time that humans started using yeast in food ? 4. Is yeast used in beer ? 5. Is yeast used in bread ? 6. What alcohol is yeast used in ? 7. Is yeast used in cheese ? 8. Are there other foods besides bread and cheese that yeast is used in ? 9. How does yeast work in bread making ? 10. What's the most commonly used yeast in food ?

ANSWERS :

1. Yeast is a single celled organism. There are MANY different types. Saccharomyces cerevisiae is the most popular used species. Yeast used in food production work best in warm, moist growing environments with a slighty acidic PH. Another explanation is, yeast is a microscopic fungus consisting of single oval cells that reproduce by budding, and are capable of converting sugar into alcohol and carbon dioxide.

2. Yeast is used in baking mostly in bread, alcoholic beverages like beer and wine and also specific cheeses.

3. Using yeast in food dates back all the way to the ancient Egyptains when they used yeast in bread making, and beer and wine for a very long time.

4. Yes yeast is used in all beer. Of course not in gluton free beer.

5. Yes yeast is used in bread. Without it the bread wouldn't rise.

6. The alcohol that yeast is used in is fermented drinks like beer and wine.

7. Most types of commercial cheese usually contain yeast. The cheeses with the most yeast are the edible mouldy cheeses for example Roquefort. Other dairy products that have yeast in them are buttermilk and sour cream.

8. There are several foods with yeast in them such as bagles, beer, bread rolls, cider, fruits skin such as grapes and plumbs, grape fruits, malt beverages, oxo cubes, sake and wine. Also there's cakes, doughnuts, over-ripe fruits and soup.

9. How the yeast works in bread is the yeast feeds on the sugars present in the bread dough, producing the gas carbon dioxide. This forms bubbles within the dough, causing it to expand /rise.

10. Baker's yeast is what we use most often for leavening when cooking and baking.

Key word search list : 1. Yeast 2. Food industry 3. Bread 4.Yeast cells 5. Fungi 6.Food 7.Uses 8.History 9.Microorganisms 10.Spores

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