this test is done to determine if bacteria can breakdown the amino acid tryptophan into indole
"Orange flowers can often smell bad due to an excess concentration of a biochemical substance called an indole. In addition to their presence in orange flowers and paperwhites, indoles are also present in coal tar and animal fecal matter."
K. oxytoca will be indole-positive while K. pneumonia is indole-negative
C10H9NO2
Trytophan
class of alkaloids containing a structural moiety of indole.
Sulfur Indole Motility test
Indole test,Proteus vulgaris is be indole positive and Citrobacter freundii will be indole negative
Warm, oily and strong smell
this test is done to determine if bacteria can breakdown the amino acid tryptophan into indole
The indole positive test is used to test the absence or presence of the vibro cholera.
"Orange flowers can often smell bad due to an excess concentration of a biochemical substance called an indole. In addition to their presence in orange flowers and paperwhites, indoles are also present in coal tar and animal fecal matter."
an odour
Smoky
Coffee
Salty
The indole test is a biochemical test performed on bacterial species to determine the ability of the organism to split indole from the amino acid tryptophan. This division is performed by a chain of a number of different intracellular enzymes, a system generally referred to as "tryptophanase."