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Churnas
1. Submitted to -: Mohit Mangla
Submitted by-: Navneet Singh
Bpharm 4rd sem
1438002
2. Index
Churnas
Preparation of churnas
Parameter used for standardization of churnas
Evaluation of physical parameter of churnas
Uses of churnas
Example of churnas
3. Churnas
Churna is defined as a fine powder of drug or drugs
in Ayurvedic system of medicine. Drugs mentioned
in patha, are cleaned properly, dried thoroughly,
pulverized and then sieved. The churna is free
flowing and retains its potency for one year, if
preserved in an airtight container.
4. Preparation of churnas
Drug mentioned in yoga are cleaned and dried
properly they are finally powdered and sieved. If
more then one drug are present then each one is
separately powdered, sieved and weight accurately
and then mixed together.
5. Parameter used for
standardization of herbal
churnas
Method Evaluation of parameter
Authentication Parts of plants like leaf, flower,
root,stolon
Family , biological source
Morphology or organoleptic
evaluation
Odour, taste, size, shape, special
feature
Microscopy evaluation Leaf content, trichomes, stomata,
quantitative microscopy
Chemical evaluation Chemical test, chemical assay,
phytochemical assay
Physical evaluation pH, moisture content, ash value,
melting point, crude fibre content etc
Biological evaluation Microbial content, pesticide
contamination
6. Evaluation of physical
parameter of churnas
S.no Physical parameter values
1 pH 5.35
2 Moisture content 10.8% ww
3 Crude fibre content 9.75% w/w
4 Ash value
(1) Total ash content
(2) Acid insoluble ash
10% w/w
5% w/w
5 Extractive value
(1) Water soluble
extractive value
(2) Alcohol soluble
extractive value
0.12% w/w
2% w/w
7. Uses of churnas
Carminative and stimulant
Diuretic
Laxative and expectorant
Diarrhoea
Alternative tonic
Detoxifier
vomiting