| Sarah McCuaig
Antibacterial Toothpaste - Do Not Swallow
| Division: | Life Sciences | | Category: | Intermediate | | Region: | Waterloo-Wellington | | City: | Waterloo, ON | | School: | Laurel Heights S.S. | | Abstract: | The effects of antibacterial toothpaste, containing 0.3% triclosan, on the probiotic lactobacillus (HA-111) bacteria, found in the human gastrointestinal tract, were investigated. Zones of inhibition appeared around filter paper disks inoculated with Colgate Total antibacterial toothpaste that were plated on blood agar plates, swabbed with lactobacillus isolate. Inhibitory zones continued to grow for 24 hours, 12 hours longer than the toothpaste’s claimed effectiveness. |
| Awards | Value | Australian National Youth Science Forum Award
Sponsor: | $2 500.00 | The University of Western Ontario Scholarship
Bronze Medallist - $1000 Entrance Scholarship
Sponsor: University of Western Ontario | $1 000.00 | Bronze Medal - Health Sciences
Intermediate
Sponsor: Canadian Institutes of Health Research | $300.00 | | Total | $3 800.00 | |
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