DMACA reagent
Encyclopedia
DMACA is an histological dye used to detect indole
Indole
Indole is an aromatic heterocyclic organic compound. It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing pyrrole ring. Indole is a popular component of fragrances and the precursor to many pharmaceuticals. Compounds that contain an...

 production in cells. It is used for the rapid identification of bacteria containing tryptophanase
Tryptophanase
In enzymology, a tryptophanase is an enzyme that catalyzes the chemical reactionThus, the two substrates of this enzyme are L-tryptophan and H2O, whereas its 3 products are indole, pyruvate, and NH3....

 enzyme systems.

It is also particularly useful for localization of proanthocyanidin
Proanthocyanidin
Proanthocyanidins, also known as OPCs or condensed tannins, are a subgroup of the flavonoid class of polyphenols...

s compounds in plants, resulting in a blue staining. It has been used for grapevine fruit or for legumes foliage histology.

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