Page 160 - Applied Pharmacognosy
P. 160
Types of Chemical markers
corresponding to methyl stearate and methyl palmitate at least 5
• quantitation by normalisation
% of stearic acid = A/C * 100 should be 40-60%
% of stearic & palmitic acid = (A+B)/C *100 should be n.l.t
90%
Where;
A: peak area due to stearic acid.
B :peak area due to palmitic acid.
C: total peak area.
STABILITY TESTING of HERBAL DRUGS
According to European Medicines Agency [EMA] recommendations
The purpose of the stability study is to establish, based on testing a
minimum of two or three batches of the finished product, a shelf life