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Science – Food Mould

Posted on: March 9, 2017

Here is a good experiment on growing mould on bread:

Directions:

  • SAMPLE 1:  Take a piece of bread and slice it in half (it can be a few days old, but ensure it isn’t too stale).  Seal one half in saran wrap and expose the other to air.
  • SAMPLE 2:  Take another piece of bread and slice it in half.  Leave one half in the dark (a paper bag or cupboard) and the other half in strong light (sunlight works)
  • SAMPLE 3:  Take a third piece of bread and slice it in half.  Keep one half very dry and put about 1 tsp of water on the other half.  (Spritz the wet piece with a few drops of water each day).
  • SAMPLE 4:  Take a fourth piece of bread and put half of it someplace warm, in the dark (on top of the fridge in a paper bag) and the other half someplace cold in the dark (the refrigerator).
  • Examine the samples each day with your naked eye or a magnifying glass and record any changes in appearance.

 

What happened:

Molds will develop on some of the samples.

Molds grow best in warm, dark and moist conditions.

In the first sample, the sealed bread should develop mold more slowly than the unsealed bread.

In the second sample, the bread kept in darkness should develop mold more quickly than the bread kept in light.

In the third sample, the moist bread will develop mold more quickly than the dry bread.

In the fourth sample, the mold in the warm place should develop mold more quickly than the bread in the cold place.

Reference: http://www.kidzone.ws/science/mold.htm

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