Me and my daughter are trying to grow mold on bread for a science experiment. It's been 3 days and still nothing. How long does it take before visible spores start to develop?
2007-02-02 05:49:32 · 10 answers · asked by pennylanegal 5 in Science & Mathematics ➔ Botany
You may not be getting mold because the bread may have preservatives that prevent bacterial growth. Bread without preservatives (sodium propionate) is a wonderful medium for growing mold. Here are some tips to harbor the growth of mold:
Check the ingredients of the bread, we want white bread without propionates.
Put five to 10 drops of water on the piece of bread and store it in a Ziploc bag in a warm place.
After seven to 10 days, you should notice some fuzzy white, black, orange or green spots on the bread. The green color is typically a mold called Penicillium (from which penicillin is made). Once visible, the mold will grow noticeably each day.
2007-02-02 05:59:34 · answer #1 · answered by Anonymous · 0⤊ 1⤋
Bread Mold Growth
2017-01-03 14:02:05 · answer #2 · answered by ? 3 · 0⤊ 0⤋
Um...........I really don't know WHY you would want to grow mold on a piece of bread and waste bread but I think if you put it near the heat vent it will cause the mold to grow faster since the bread would spoil faster. (the more humid the environment the faster the mold growth) You might want to zip the bread and water in 3 plastic bags (one inside the other) because bread mold can be life threatening if inhaled and cause an infection called zygomycosis.
2016-03-29 01:41:20 · answer #3 · answered by Anonymous · 0⤊ 2⤋
The bread needs to be moist. If you leave a slice, moistened on a plastic plate, on a counter it will pick up the spores from the air and grow. It does take a few days and maybe more moisture. Be sure to develop a way to keep it covered to take it to school, some people are allergic to mold and generally mold growths are not allowed unless enclosed.You could hasten it if you fid some fruit with some mold, transfer a few spores.
2007-02-02 06:01:46 · answer #4 · answered by science teacher 7 · 0⤊ 0⤋
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For bread to grow mold, it has to have been exposed to mold spores. Your bread was isolated from mold spores by the plastic bag. Also, it makes a difference what kind of bread you use. Try to find some that is preservative free for your experiment. Then: Inoculate half the bread by letting it lay open on the counter for 4 to 6 hours; Prepare two slices of bread for each environment, one that has been inoculated and one that has remained sealed in the wrapper, then proceed as before. This gives you a "control" for each of the environments. BTW, i don't know if the water is necessary to grow mold. Bread contains a good deal of moisture.
2016-03-27 04:50:59 · answer #5 · answered by Anonymous · 0⤊ 0⤋
You'll get mold a LOT faster with bakery bread, and you'll get a greater variety of species. Most packaged breads from the store are stuffed with preservatives, which inhibit mold growth. Perhaps you could do a controlled experiment using these two sources of bread and see what differences you observe?
FYI: If you wet the bread too much, you'll get bacteria instead of mold.
2007-02-02 06:02:42 · answer #6 · answered by plantgirl 3 · 1⤊ 1⤋
wet the bread, a little, and put it inside a close plastic bag it should take about two days
2007-02-02 05:58:07 · answer #7 · answered by runlolarun 4 · 1⤊ 0⤋
You have to wet it a little. Don't soak it, just make it slightly damp
2007-02-02 05:57:32 · answer #8 · answered by me 4 · 1⤊ 0⤋
also besides wetting it a little and the more organic the better also put it in the dark! good luck have fun science is a blast!
2007-02-02 11:58:35 · answer #9 · answered by Anonymous · 0⤊ 0⤋
it takes about 1wk after the expire date
2007-02-02 05:56:57 · answer #10 · answered by Anonymous · 0⤊ 0⤋