Many of the compounds could cause significant reductions in pgCAR, this situation is exemplified by treatment with these ligands, Baicalin, Liquiritin, Indigotin
, Daidzein, Betaine and Matrine, which were shown to give activities 88, 75, 99, 75, 90 and 90%, respectively compared to no-ligand DMSO control.
They are: Erythrosin included in the class of xanthene dyes; Blue indigotine included in the indigotin
class of dyes, Patent Blue V, Fast Green and Brilliant Blue in class of triphenylmethane dyes, Bordeaux Red, Ponceau 4R, Red 40, Azorubine, Tartrazine Yellow and Sunset Yellow, included in the class of azo dyes (POLONIO; PERES, 2009).
The action of ammonia in urine converts indigotin
into soluble 'white indigo,' which is actually greenish-yellow.
Many chemical compounds are found in IR, including indigotin
, indirubin, isatin, isaindigotidione, organic acids, and amino acids (Wu et al.
It is the addition of oxygen by lengthy and vigorous beating of the fermenting liquid that converts the indoxyl into indigotin
, which eventually becomes the insoluble blue pigment.