[PDF] A textbook of Pharmacognosy PDF Books

A textbook of Pharmacognosy PDF Books

Pharmacognosy the study of plants or other natural sources as a possible source of drugs. it is the study of the physical, chemical constituents, biochemical and biological properties, geographical sources of medicinal plants.

The word ‘pharmacognosy’ had its debut in the early 19th century to designate the discipline related to medicinal plants; it is derived from the Greek pharmakon, ‘a drug’, and gignosco, ‘to acquire a knowledge of’ and, as recorded by Dr K. Ganzinger (Sci. Pharm., 1982, 50, 351), the terms ‘pharmacognosy’ and ‘pharmacodynamics’ were probably first coined by Johann Adam Schmidt (1759-1809) in his hand-written manuscript Lehrbuch der Materia Medica, which was posthumously published in Vienna in 1811.

Schmidt was, until his death, professor at the medico-surgical Joseph Academy in Vienna; interestingly he was also Beethoven’s physician. Shortly after the above publication, pharmacognosy appears again in 1815 in a small work by Chr. Aenotheus Seydler entitled Analecta Pharmacognostica.

Pharmacognosy is closely related to botany and plant chemistry and, indeed, both originated from the earlier scientific studies on medicinal plants.

As late as the beginning of the 20th century, the subject had developed mainly on the botanical side, being concerned with the description and identification of drugs, both in the whole state and in powder, and with their history, commerce, collection, preparation and storage.

The scope and practice of pharmacognosy

Many crude drugs once generally categorized as herbal remedies are now, in accordance with Continental European practice, described in the British Pharmacopoeia (BP).

Chromatographic, chemical and physical tests, together with assay procedures, are given for many drugs for which previously there was no quantitative evaluation of the chemical constituents available.

Although pharmacognosy is principally concerned with plant materials, there are a small number of animal products which are traditionally encompassed within the subject; these include such items as beeswax, gelatin, woolfat, vitamins, etc

Vegetable drugs can be arranged for study under the following headings.


Part 1 – History, Definition and Scope of Pharmacognosy
Part 2 – Drugs and Pharmaceutical Aids of Natural Origin
Part 3 – Classification of Natural Drugs
Part 4 – Introduction to A parts of plants
Part 5 – Scheme of Pharmacognostic Studies
Part 6 – Collection and Preparation of Natural Drugs for Market
Part 7 – adulteration, drug evaluation and significance of pharmacopeial standard.
Part 8 – Chemical Nature of Natural Drugs
Part 9 – Pharmacological Grouping of Natural Drugs
Part 10 – Surgical Fibres, Sutures and Surgical Dressings


Book’s Name : A textbook of Pharmacognosy PDF Books
Editor : S. B. Gokhale, C. K. Kokate, A. P. Purohit
Edition : 29th Edition
Size of PDF : 12.90 MB.
Number Of Pages : 284


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