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How Moisture Affects the Growth of Mold on Bread .

How Moisture Affects the Growth of Mold on Bread. Presentation by, Peter Stone, Ryan Melia, and Tim Padden. Background Info. We are testing for mold. Mold is a type of fungi. In this experiment we hope to find out how the amount of water affects the rate of mold growth. Experimental Design.

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How Moisture Affects the Growth of Mold on Bread .

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  1. How Moisture Affects the Growth of Mold on Bread. Presentation by, Peter Stone, Ryan Melia, and Tim Padden.

  2. Background Info. • We are testing for mold. • Mold is a type of fungi. • In this experiment we hope to find out how the amount of water affects the rate of mold growth.

  3. Experimental Design. Hypothesis: • Bread w/ most water will grow mold at a faster pace with more mold. IV: Moisture level DV:Mold growth. Constants: • Temperature • Light condition. • Water amount. • Type of bread. • Amount of oxygen. • Same liquid, water. 0 drops. 5 drops. 10 drops 12 days 12 days 12 days.

  4. The Procedure • Get three pieces of bread, place on table. • Get three plastic bags, label according to amount of water added. • Get beaker and fill with water. • Fill eye dropper with water. • Drop correct amount of water on each piece of bread. • Place bread in plastic bag. • Push air out of bag, seal bag and put in dark area. Tim and Ryan hard at work.

  5. Day One. • Day one, no water had been added. • We used the same type of bread, (white bread) throughout the experiment.

  6. Day Twelve Zero drops of water. No changes from day one. Five drops of water. Mold growth beginning. Ten drops of water. Major growth begins.

  7. The End Result • From this experiment we can conclude: • The more water the more mold growth. • The more water the faster the mold growth • The type of mold is rhizopus. Here is one piece of mold under a microscope. We foundthat the mold grew in clusters.

  8. What Is Rhizopus? • Rapid growth • Common on breads. • dry, easily airborne spores. • Any of various rot-causing fungi of the genus.

  9. Suggestions For doing this experiment again we would change: • Take more pictures. • Try putting in a no oxygen zone. • Exposing to light.

  10. We hope you enjoyed our presentation, we would like to take this time to answer and of your questions.

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