Pharmacognosy is the study of natural products derived from plants, animals, fungi and microorganisms that have medicinal or biological activity. It is a branch of pharmacy that deals with the identification, extraction, isolation, purification, characterization, biosynthesis, pharmacology and clinical use of these natural products.
One of the classic textbooks of pharmacognosy is "Pharmacognosy" by Varro E. Tyler, Lynn R. Brady and James E. Robbers. The first edition of this book was published in 1956 by Lea & Febiger, and the latest edition (the ninth) was published in 2009 by CRC Press. The book covers various topics related to pharmacognosy, such as:
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- The history and scope of pharmacognosy
- The sources and classification of natural products
- The methods of extraction, isolation and analysis of natural products
- The chemistry and biosynthesis of natural products
- The pharmacological and toxicological aspects of natural products
- The therapeutic applications of natural products
- The quality control and regulation of natural products
- The biotechnology and genetic engineering of natural products
The book also includes chapters on specific groups of natural products, such as alkaloids, glycosides, terpenoids, steroids, flavonoids, phenolic compounds, lignans, coumarins, quinones, anthraquinones, tannins, saponins, cardiac glycosides, cyanogenic glycosides, lectins, peptides, proteins, enzymes, nucleic acids, antibiotics, immunomodulators, anticancer agents and antiviral agents.
The book is written in a clear and concise style, with numerous examples, tables, figures and references. It is suitable for students and practitioners of pharmacy, pharmacology, medicinal chemistry, botany and related fields. It is also a valuable source of information for researchers and educators in the field of pharmacognosy.
A PDF version of the book can be downloaded for free from the Internet Archive[^1^]. Alternatively, a hardcover version can be purchased from CRC Press[^2^] or other online bookstores.
The book has received positive reviews from various sources, such as Elsevier[^2^], LexCliq[^3^] and SoundCloud. Some of the reviewers praised the book for its comprehensive coverage, updated information, clear presentation, practical examples and useful references. They also appreciated the book for its relevance to the current trends and challenges in pharmacognosy, such as the discovery of new natural products, the development of novel analytical methods, the integration of traditional and modern medicine, the conservation of biodiversity and the ethical issues of natural product research.
However, some reviewers also pointed out some limitations and drawbacks of the book, such as its high price, its lack of color illustrations, its occasional errors and inconsistencies, its insufficient depth on some topics and its omission of some important aspects of pharmacognosy, such as marine natural products, herbal cosmetics and nutraceuticals. They also suggested that the book could be improved by adding more case studies, exercises, questions and answers, glossaries and appendices.
Overall, the book is a valuable resource for anyone interested in learning more about pharmacognosy and its applications. It is a must-have for students and teachers of pharmacognosy, as well as for researchers and practitioners of pharmacy, pharmacology, medicinal chemistry, botany and related fields. It is also a useful reference for policy makers, regulators, health professionals and consumers who want to know more about the benefits and risks of natural products. 8cf37b1e13