Commerce in Crude Drugs
Natural crude drugs constitute good items of commercial commodities. They are traded in the market like any other essential commodities …
Wood in Pharmacognosy
The wood represents the central harder part of all shrubs and trees inner to the pharmacognostic bark, that is the …
Unorganised Plant Drugs
The unorganised drugs consist of some natural substances, which are derived from plants and animals by a number of extraction …
Storage and Preservation of Plant Drugs
Most plant drug undergoes a period of storage before they are finally used by industries to prepare pharmaceutical and medicinal …
Microscopy in Pharmacognosy
Microscopy is one of the most important techniques employed in pharmacognosy for the study and identification of crude drugs. Microscope …
Construction of a Compound Microscope
The microscope, essentially the compound microscope, which produces high magnification, is basically made by using two convex lenses of short …
Microscopical Measurements and Drawing to scale
Microscopical measurements or micrometry and drawing to scale are of significant value in the examination of crude drugs, particularly in …
Microscopical Techniques for Crude drug Analysis
Microscopic analysis of crude drugs is done mainly for the determination of (a) the size, shape and relative position of …