NIS - libdoc.who.int - World Health Organization

WHO monographs on medicinal plants commonly used in the Newly Independent States (NIS)
Purity tests
Microbiological
Tests for specific microorganisms and microbial contamination limits are
as described in the WHO guidelines on quality control methods for medicinal
plant materials (33).
Chemical
No information available.
Foreign organic matter
Not more than 2% (2). Not more than 1%. Not more than 7% fragments
of the brownish and blackish herb. Not more than 40% of stems. For cut
drug: not more than 10% of fragments of drug having a diameter less than
0.5 mm and not more than 10% of fragments of drug having a diameter
more than 7 mm (1).
Total ash
Not more than 15% (2). Not more than 10% (1).
Acid-insoluble ash
Ash insoluble in hydrochloric acid must not be more than 4% (2).
Sulfated ash
No information available.
Water-soluble extractive
No information available.
Alcohol-soluble extractive
No information available.
Loss on drying
Not more than 13% (1). Maximum water content, 120 ml/kg, determined
on 20.0 g of the powdered drug (2).
Pesticide residues
The recommended maximum sum limit of aldrin and dieldrin is not more
than 0.05 mg/kg (2). For other pesticides, see the European pharmacopoeia
(2) and the WHO guidelines on quality control methods for medicinal
plant materials (33) and pesticide residues (34).
288