These are the glycosides which on hydrolysis yields hydro-cynic acid (HCN), benzaldehyde and sugars. The medicinal activity of cyanogenetic glycosides is due to presence of hydrocyanic acid and these are the characteristics of family rosaceae. For examples Amygdalin obtained from bitter almond (Prunus amygdalus), Prunasin obtained from wild cherry bark.
CYANOGENIC GLYCOSIDES
These are the glycosides which on hydrolysis yields
hydro-cynic acid (HCN), benzaldehyde and sugars. The medicinal activity of
cyanogenetic glycosides is due to presence of hydrocyanic acid and these are
the characteristics of family rosaceae. For examples Amygdalin obtained from
bitter almond (Prunus amygdalus),
Prunasin obtained from wild cherry bark.
Identification Tests
1. A strip of white filter paper is
dipped in 10% aqueous solution of picric acid, drain it and dip in a 10% sodium
carbonate solution and drain again. Moisten the powdered drug with water and
put into a conical flask. Trap the sodium picrate paper on the neck of flask
with cork. Because of volatile hydrocyanic acid, the paper will become brick
red colour.
2. When drug treated with 3% aqueous
solution of mercurous nitrate reduction to metallic mercury takes place.
TH 2019 - 2025 pharmacy180.com; Developed by Therithal info.