Ceylan

__The Deadly Truth about anti-bacterial soap__ __Aim-__ To find out the concentration of triclosan needed to make antibacterial soap effective.

Independent variable: Concentration of Triclosan

Dependant Variable: Amount of Bacteria

__Background__


 * Triclosan is the most common ingredient in ingrediants we use in everyday life such as toothpaste.
 * It is very controversial as it is a known carcinogen
 * Scientists and doctors debate the effectiveness of the toothpastes that contain triclosan in the first place
 * Because of this, the smallest amount of triclosan necessary should be used in household products

This is only a bit of the brief information that we will be posting for our project. Basically Bryn and I found out that Anti bacterial soap has an active chemical called Triclosan,which in fact has been shown to kill human cells! This chemical formula was investigated by scientists and seen as having little use to kill bacteria. SOOOO bryn and i are going to do a little test of our own and see the amount of of triclosan it takes to kill germs:)

__Links__ [|http://www.lindachae.com/triclosan.htm  [|http://www.grinningplanet.com/2005/10-04/triclosan-article.htm  [|http://www.mouthshut.com/review/Dettol_Soap-29217-1.html  http://www.journals.uchicago.edu/doi/abs/10.1086/519255 http://cfpub.epa.gov/ncea/cfm/recordisplay.cfm?deid=55264

Observations:

Conclusion:


 * // Triclosan is also known as Irgasan and Microban. //**

Materials: Agar and Petri Dishes (5) Bacteria Source (We used the tab of a water dispenser) Cleaning Material with Triclosan as an ingrediant (Colgate Total Whitening) Heat Source (to accelerate growth of bacteria) Distilled water to dilute Triclosan Scale- measure amount of triclosan Cotton (to swab bacteria source)

Procedure: 1. Swab bacteria source using cotton 2. Wipe bateria on agar plate to amke sure the bacteria is sufficiently on the agar plate 3. Incubate bacteria 2 days to allow it to grow 4. Put different concentrations of triclosan product on each plate 5. Allow 2 days for triclosan to work 6. Observe and Record any changes that occurred over the past days
 * What concentration killed the most? least? which seems to be most efficient?

So right now we are waiting for our bacteria to grow becasue at first, we swabbed the handles of the water cooler, but no bacteria grew. So bryn and i have decided to procure bacteria from Y-lynn, Natasha, and bens group that way we will be able to work efficiently and not lose time on our project. When the bacteria in our agar dish grows then we are going to take different concentrations of the Colgate total whitening and put them into the 4 different agar dishes to see what the triclosan does. (the 5th dish will have no toothpaste becasue it is going to be controlled.)