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Author Topic: Does detergent have an effect on bacteria?  (Read 9995 times)

Offline Geezer

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Does detergent have an effect on bacteria?
« on: 24/05/2011 19:20:28 »
Does a small amount of dishwashing detergent in water do anything to deter the growth of bacteria? Does it disrupt their ability to multiply?


 

Offline CZARCAR

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Does detergent have an effect on bacteria?
« Reply #1 on: 24/05/2011 20:34:58 »
dunno but do know some bacteria can live inside a kerosene tank i think.
 

Offline CliffordK

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Does detergent have an effect on bacteria?
« Reply #2 on: 24/05/2011 21:34:49 »
Most soaps are a polar lipid such as a phospholipid, or a fatty acid salt.

While they may initially aid in scrubbing grease and grime from surfaces, water with a moderate amount of soap dissolved in it should make good bacteria chow.  At least it would be much more favorable to bacterial growth than distilled water.

Sodium hypochlorite (bleach) is considered antibacterial.

Perhaps this should be moved to the "Science Experiment" section as it would actually be interesting to run a comparative experiment with a few different types of soap and water.
« Last Edit: 24/05/2011 21:37:25 by CliffordK »
 

Offline Bored chemist

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Does detergent have an effect on bacteria?
« Reply #3 on: 25/05/2011 06:55:22 »
It depends on the bugs and it depends on the detergent.
Even ordinary soap will kill some viruses and bacteria.
 

Offline Variola

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Does detergent have an effect on bacteria?
« Reply #4 on: 28/05/2011 19:19:03 »
Many cleaning products contain SDS, (sodium dodecyl sulphate), which is used in the lab to disrupt cell walls in bacteria.
It disrupts the protein structure, and breaks up the non-covalent bonds, and as such is is also used in SDS PAGE electrophoresis to separate out proteins by molecular weight and size.
So yup, washing up liquid is not a bacterium's best friend!
 

Offline Geezer

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Does detergent have an effect on bacteria?
« Reply #5 on: 28/05/2011 19:32:47 »
Many cleaning products contain SDS, (sodium dodecyl sulphate), which is used in the lab to disrupt cell walls in bacteria.
It disrupts the protein structure, and breaks up the non-covalent bonds, and as such is is also used in SDS PAGE electrophoresis to separate out proteins by molecular weight and size.
So yup, washing up liquid is not a bacterium's best friend!

Fantastic! That's EXACTLY what I was thinking (apart from all the stuff about chemicals, proteins, molecules, bonds and electrowhatsit of course).
 

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Does detergent have an effect on bacteria?
« Reply #5 on: 28/05/2011 19:32:47 »

 

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