Lemongrass plant oils and extracts have been used for a
wide variety of purposes for many thousands of years, and
the lemongrass oil is used for preservation of food crops.
In particular, the antimicrobial activity of plant oils and
extracts has formed the basis of many applications, including
raw and processed food preservation, pharmaceuticals,
alternative medicine and natural therapies[17]. Differences
in sensitivity between Gram-positive and Gram-negative
bacteria to the extract can probably be attributed to the
structural and compositional differences in membranes
between the two groups[18]. The Gram-negative bacteria
have an outer membrane that serves as an impermeable
barrier for many small molecules. Our research is consistent
with findings of other researchers so that most plant extracts
have in