Subject: How does eucalyptus oil inhibit the growth of bacteria?

I'm doing an EEI in biology in which we are testing the zones of inhibition of 
certain antiseptics against Pseudomonas fluoroscens.  The only thing left on my 
report that I need to explain is how the eucalyptus oil actually inhibits the 
growth bacterium.  I.e. by interfering with the cell walls and membranes, 
inhibiting protein synthesis, or by inhibiting vital enzymes in the cells.  Any 
help would be greatly appreciated. 

Re: How does eucalyptus oil inhibit the growth of bacteria?