Why fecl3 and hcl are used in modified borntrager's test when c glycoside to o glycoside?
Answers
Because, the quality control of herbal crude drug and bioconstituents is of paramount
important for their acceptability in modern system of medicine. One of the major
problems faced by user in industry is non availability of rigid quality control profile
for herbal raw material and their formulation with advanced of analytical technique
and sophisticated instrument technology; it is possible to suggest a practicable quality
assurance profile for a crude drug or its bioactive constituents.
Explanation:
The drug is boiled with dilute sulphuric acid, filtered and to the filtrate benzene, or ether or chloroform is added and shaken well. The organic layer is separated to which ammonia is added slowly. The ammoniacal layer shows pink to red color due to presences of anthraquinone glycosides.