Natural Bioactive Compounds

Natural Bioactive Compounds
Author: Rajeshwar P. Sinha,h.c. Donat-P. Häder
Publsiher: Academic Press
Total Pages: 502
Release: 2020-10-06
ISBN: 0128206594
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bioactive Compounds Book Excerpt:

Natural Bioactive Compounds: Technological Advancements deals with the latest breakthroughs in the field of screening, characterization and novel applications of natural bioactive compounds from diverse group of organisms ranging from bacteria, viruses, cyanobacteria, algae, fungi, bryophytes, higher plants, sponges, corals and fishes. Written by some of the most reputed scientists in the field, this book introduces the reader to strategies and methods in the search for bioactive natural products. It is an essential read for researchers and students interested in bioactive natural products, their biological and pharmacological properties, their possible use as chemopreventive or chemotherapeutic agents, and other future potential applications. Explores natural sources of bioactive compounds, including cyanobacteria, bacteria, viruses, fungi and higher plants Discusses the potential applications of biological products, such as their use in medicine (antibiotics, cancer research, immunology), as food additives, supplements and technological substances Analyzes the contributions of emerging or developing technologies for the study of bioactive natural compounds (characterization and purification)

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part II

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part II
Author: Luis Rodrigues da Silva,Branca Maria Silva
Publsiher: Bentham Science Publishers
Total Pages: 250
Release: 2016-05-03
ISBN: 1681082438
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part II Book Excerpt:

Plants have been widely used to treat diseases, owing to the presence of bioactive compounds (phytochemicals) which play important roles in health promotion and disease prevention. In recent years, advances in chemical extraction techniques, lifestyle and dietary choices for human health have increased the interest in the consumption and study of fruits, vegetables, and foods enriched with bioactive compounds and nutraceuticals. Thousands of dietary phytochemicals, such as flavonoids, phenolic acids, glucosinolates, terpenes and alkaloids, have been identified and categorized further according to a diverse array of biochemical properties. Many of these phytochemicals have been hypothesized to reduce the risk of several pathological conditions which include life threatening diseases such as heart disease and cancer, to name a few. Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters is a 2 book set which presents a summary of different classes of phytochemicals commonly found in common edible food sources. Each chapter details the general chemical structures of compounds, naturally present in specific fruits, vegetables and grains, their biological importance and mechanisms of action. The book set is an essential handbook for anyone interested in the natural product chemistry of these common crops. Part 1 of this set covers details about different fruits (banana, citrus fruits, pears, etc.). Part 2 covers legumes, nuts, seeds and cereals.

Natural Bio active Compounds

Natural Bio active Compounds
Author: Mallappa Kumara Swamy,Mohd Sayeed Akhtar
Publsiher: Springer Nature
Total Pages: 492
Release: 2019-09-19
ISBN: 9811372055
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bio active Compounds Book Excerpt:

Nature has consistently provided human beings with bioactive compounds that can be used directly as drugs or indirectly as drug leads. Some of the major classes of natural bioactive compounds include phenolics, alkaloids, tannins, saponins, lignin, glycosides, terpenoids, and many more. They possess a broad range of biological activities and are primarily useful in the treatment of various health issues. At the same time, the search for new and novel drugs is never-ending and, despite major advances in synthetic chemistry, nature remains an essential resource for drug discovery. Therefore, more and more researchers are interested in understanding the chemistry, clinical pharmacology, and beneficial effects of bioactive compounds in connection with solving human health problems. This book presents a wealth of information on natural metabolites that have been or are currently being used as drugs or leads for the discovery of new drugs. In addition, it highlights the importance of natural products against various human diseases, and their applications in the drug, nutraceuticals, cosmetics and herbal industries. Accordingly, the book offers a valuable resource for all students, educators, and healthcare experts involved in natural product research, phytochemistry, and pharmacological research.

Special Issue

Special Issue
Author: Anonim
Publsiher: Unknown
Total Pages: 135
Release: 2009
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Special Issue Book Excerpt:

Natural Bio active Compounds

Natural Bio active Compounds
Author: Mohd Sayeed Akhtar,Mallappa Kumara Swamy,Uma Rani Sinniah
Publsiher: Springer Nature
Total Pages: 608
Release: 2019-09-06
ISBN: 9811371547
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bio active Compounds Book Excerpt:

Bioactive compounds produced by natural sources, such as plants, microbes, endophytic fungi, etc., can potentially be applied in various fields, including agriculture, biotechnology and biomedicine. Several bioactive compounds have proved to be invaluable in mediating plant-microbe interactions, and promoting plant growth and development. Due to their numerous health-promoting properties, these compounds have been widely used as a source of medication since ancient times. However, there is an unprecedented need to meet the growing demand for natural bioactive compounds in the flavor and fragrance, food, and pharmaceutical industries. Moreover, discovering new lead molecules from natural sources is essential to overcoming the rising number of new diseases. In this regard, natural bioactive compounds hold tremendous potential for new drug discovery. Therefore, this field of research has become a vital area for researchers interested in understanding the chemistry, biosynthetic mechanisms, and pharmacological activities of these bioactive metabolites. This book describes the basics of bioactive plant compounds, their chemical properties, and their pharmacological biotechnological properties with regard to various human diseases and applications in the drug, cosmetics and herbal industries. It offers a valuable asset for all students, educators, researchers, and healthcare experts involved in agronomy, ecology, crop science, molecular biology, stress physiology, and natural products.

Naturally Occurring Bioactive Compounds

Naturally Occurring Bioactive Compounds
Author: Anonim
Publsiher: Elsevier
Total Pages: 514
Release: 2006-09-25
ISBN: 9780080464923
Category: Science
Language: EN, FR, DE, ES & NL

Naturally Occurring Bioactive Compounds Book Excerpt:

This timely book provides an overview of natural products/botanicals used for the management of insect-pest and diseases. It will help readers to update and widen their knowledge about natural products and their bio-activities against plant pathogens. The volume explores activity, chemistry, toxicity and geographic distribution of plants. Discussions concerning the methodology used for the detection of active principles, their mode of action and commercial prospects are of utmost importance and worthy of note. Focuses on recent achievements in natural bio-actives Global coverage of natural products / plants Targets the most important issues of natural botanicals/ biocides Includes innovative ideas with lucid explanations Contains specialized chapters, such as, natural control of multi-drug resistant organisms, anti-salmonella agents, natural house-dust-mite control agents, and naturally occurring anti-insect proteins, etc. Covers research on bioactives: From Lab to Field and Field to Market Includes eco-friendly and economically viable herbal technology

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part I

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part I
Author: Luis Rodrigues da Silva , Branca Silva
Publsiher: Bentham Science Publishers
Total Pages: 300
Release: 2016-05-03
ISBN: 168108239X
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters Part I Book Excerpt:

Plants have been widely used to treat diseases, owing to the presence of bioactive compounds (phytochemicals) which play important roles in health promotion and disease prevention. In recent years, advances in chemical extraction techniques, lifestyle and dietary choices for human health have increased the interest in the consumption and study of fruits, vegetables, and foods enriched with bioactive compounds and nutraceuticals. Thousands of dietary phytochemicals, such as flavonoids, phenolic acids, glucosinolates, terpenes and alkaloids, have been identified and categorized further according to a diverse array of biochemical properties. Many of these phytochemicals have been hypothesized to reduce the risk of several pathological conditions which include life threatening diseases such as heart disease and cancer, to name a few. Natural Bioactive Compounds from Fruits and Vegetables as Health Promoters is a 2 book set which presents a summary of different classes of phytochemicals commonly found in common edible food sources. Each chapter details the general chemical structures of compounds, naturally present in specific fruits, vegetables and grains, their biological importance and mechanisms of action. The book set is an essential handbook for anyone interested in the natural product chemistry of these common crops. Part 1 of this set covers details about different fruits (banana, citrus fruits, pears, etc.). Part 2 covers legumes, nuts, seeds and cereals.

Natural Bio active Compounds

Natural Bio active Compounds
Author: Mohd Sayeed Akhtar,Mallappa Kumara Swamy
Publsiher: Springer Nature
Total Pages: 330
Release: 2019-09-28
ISBN: 9811374384
Category: Science
Language: EN, FR, DE, ES & NL

Natural Bio active Compounds Book Excerpt:

Natural bioactive compounds have become an integral part of plant-microbe interactions geared toward adaptation to environmental changes. They regulate symbiosis, induce seed germination, and manifest allelopathic effects, i.e., they inhibit the growth of competing plant species in their vicinity. In addition, the use of natural bioactive compounds and their products is considered to be suitable and safe in e.g. alternative medicine. Thus, there is an unprecedented need to meet the increasing demand for plant secondary metabolites in the flavor and fragrance, food, and pharmaceutical industries. However, it is difficult to obtain a constant quantity of compounds from the cultivated plants, as their yield fluctuates due to several factors including genotypic variations, the geography, edaphic conditions, harvesting and processing methods. Yet familiarity with these substances and the exploration of various approaches could open new avenues in their production. This book describes the basis of bioactive plant compounds, their mechanisms and molecular actions with regard to various human diseases, and their applications in the drug, cosmetic and herbal industries. Accordingly, it offers a valuable resource for students, educators, researchers, and healthcare experts involved in agronomy, ecology, crop science, molecular biology, stress physiology, and natural products.

Food for Health

Food for Health
Author: Wenche Frølich,Wim van Dokkum,A. Chesson,Jenny Gee,Office for Official Publications of the European Communities
Publsiher: Unknown
Total Pages: 12
Release: 2001*
ISBN: 1928374650XXX
Category: Electronic Book
Language: EN, FR, DE, ES & NL

Food for Health Book Excerpt:

Bioactive Compounds from Natural Sources

Bioactive Compounds from Natural Sources
Author: Corrado Tringali
Publsiher: CRC Press
Total Pages: 704
Release: 2003-09-02
ISBN: 0203212312
Category: Science
Language: EN, FR, DE, ES & NL

Bioactive Compounds from Natural Sources Book Excerpt:

Interest in obtaining biologically active compounds from natural sources has recently spiked due to their low toxicity, complete biodegradability, availability from renewable sources, and in most cases, low cost. Taking an interdisciplinary approach, Bioactive Compounds from Natural Sources: Isolation, Characterization, and Biological Properties covers general methods and main topics in the research field of bioactive natural products. The book describes general screening methods, modern HPLC hyphenated techniques, and NMR methods in the structural elucidation of compounds and devotes individual chapters to specific topics of research. Surveys on compounds displaying important pharmacological activities are presented in chapters devoted to Mexican medicinal plants, anti-tumor drugs of natural origin, cancer chemopreventive flavonoids, and metabolites displaying anti-HIV, antioxidative, antimalarial, and anti-inflammatory activity. The final chapters are devoted to representative examples of research into marine metabolites: immunomodulating marine glycolipids and surveys of bioactive compounds from marine opisthobranchs and Japanese soft corals. With its focus on modern approaches to the isolation of biologically active natural products, this book encourages interdisciplinary work among chemists, pharmacologists, biologists, botanists, and agronomists with an interest in bioactive natural products.

Biotechnology of Bioactive Compounds

Biotechnology of Bioactive Compounds
Author: Vijai Kumar Gupta,Maria G. Tuohy,Anthonia O'Donovan,Mohtashim Lohani
Publsiher: John Wiley & Sons
Total Pages: 736
Release: 2015-04-20
ISBN: 1118733495
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Biotechnology of Bioactive Compounds Book Excerpt:

Bioactive compounds play a central role in high-value product development in the chemical industry. Bioactive compounds have been identified from diverse sources and their therapeutic benefits, nutritional value and protective effects in human and animal healthcare have underpinned their application as pharmaceuticals and functional food ingredients. The orderly study of biologically active products and the exploration of potential biological activities of these secondary metabolites, including their clinical applications, standardization, quality control, mode of action and potential biomolecular interactions, has emerged as one of the most exciting developments in modern natural medicine. Biotechnology of Bioactive Compounds describes the current stage of knowledge on the production of bioactive compounds from microbial, algal and vegetable sources. In addition, the molecular approach for screening bioactive compounds is also discussed, as well as examples of applications of these compounds on human health. The first half of the book comprises information on diverse sources of bioactive compounds, ranging from microorganisms and algae to plants and dietary foods. The second half of the book reviews synthetic approaches, as well as selected bioactivities and biotechnological and biomedical potential. The bioactive compounds profiled include compounds such as C-phycocyanins, glycosides, phytosterols and natural steroids. An overview of the usage of bioactive compounds as antioxidants and anti-inflammatory agents, anti-allergic compounds and in stem cell research is also presented, along with an overview of the medicinal applications of plant-derived compounds. Biotechnology of Bioactive Compounds will be an informative text for undergraduate and graduate students of bio-medicinal chemistry who are keen to explore the potential of bioactive natural products. It also provides useful information for scientists working in various research fields where natural products have a primary role.

Bioactive Natural Products for Pharmaceutical Applications

Bioactive Natural Products for Pharmaceutical Applications
Author: Dilipkumar Pal,Amit Kumar Nayak
Publsiher: Springer Nature
Total Pages: 862
Release: 2020-12-14
ISBN: 3030540278
Category: Technology & Engineering
Language: EN, FR, DE, ES & NL

Bioactive Natural Products for Pharmaceutical Applications Book Excerpt:

This book covers the recent innovations relating to various bioactive natural products (such as alkaloids, glycosides, flavonoids, anthraquinones, steroids, polysaccharides, tannins and polyphenolic compounds, volatile oils, fixed oils, fats and waxes, proteins and peptides, vitamins, marine products, camptothecin, piperines, carvacrol, gedunin, GABA, ginsenosides) and their applications in the pharmaceutical fields related to academic, research and industry.

Natural Bio active Compounds

Natural Bio active Compounds
Author: Mallappa Kumara Swamy,Mohd. Sayeed Akhtar
Publsiher: Unknown
Total Pages: 492
Release: 2019
ISBN: 9789811372063
Category: Bioactive compounds
Language: EN, FR, DE, ES & NL

Natural Bio active Compounds Book Excerpt:

Nature has consistently provided human beings with bioactive compounds that can be used directly as drugs or indirectly as drug leads. Some of the major classes of natural bioactive compounds include phenolics, alkaloids, tannins, saponins, lignin, glycosides, terpenoids, and many more. They possess a broad range of biological activities and are primarily useful in the treatment of various health issues. At the same time, the search for new and novel drugs is never-ending and, despite major advances in synthetic chemistry, nature remains an essential resource for drug discovery. Therefore, more and more researchers are interested in understanding the chemistry, clinical pharmacology, and beneficial effects of bioactive compounds in connection with solving human health problems. This book presents a wealth of information on natural metabolites that have been or are currently being used as drugs or leads for the discovery of new drugs. In addition, it highlights the importance of natural products against various human diseases, and their applications in the drug, nutraceuticals, cosmetics and herbal industries. Accordingly, the book offers a valuable resource for all students, educators, and healthcare experts involved in natural product research, phytochemistry, and pharmacological research.

Bioactive Compounds from Natural Sources Second Edition

Bioactive Compounds from Natural Sources  Second Edition
Author: Corrado Tringali
Publsiher: CRC Press
Total Pages: 648
Release: 2011-09-27
ISBN: 1439822298
Category: Science
Language: EN, FR, DE, ES & NL

Bioactive Compounds from Natural Sources Second Edition Book Excerpt:

The first edition of Bioactive Compounds from Natural Sources was published in a period of renewed attention to biologically active compounds of natural origin. This trend has continued and intensified—natural products are again under the spotlight, in particular for their possible pharmacological applications. Largely focusing on natural products as lead compounds in drug discovery, Bioactive Compounds from Natural Sources, Second Edition: Natural Products as Lead Compounds in Drug Discovery is actually a completely new volume containing surveys of selected recent advances in an interdisciplinary area covering chemistry of natural products, medicinal chemistry, biochemistry, and other related topics. Written by some of the most reputed scientists in the field, this second edition includes new chapters from authors who contributed to the first edition as well as many chapters compiled by new authors. Introducing the reader to strategies and methods in the search for bioactive natural products, this book covers topics including: Natural sources of bioactive compounds such as aquatic cyanobacteria, filamentous fungi, and tropical plants, The tremendous potentiality of metabolic engineering of natural products biosynthesis The contribution of emerging or developing technologies to the study of bioactive natural compounds, namely computational methods and circular dichroism The potential of natural or natural-derived compounds for specific therapeutic applications: treatment of viral diseases, regulation of hypoxia-inducible factor, antimalarials, modulation of angiogenesis, and antitumor and wound-healing activity Selected examples of natural product families and related synthetic analogues, namely polyphenols and campthotecins Compiled for researchers and Ph.D. students working in interdisciplinary fields, this book will also be appreciated by readers without a background in chemistry interested in bioactive natural products, their biological and pharmacological properties, and their possible use as chemopreventive or chemotherapeutic agents. Conversely, the biological and pharmacological data and methods are accessible by chemists.

Natural Sources Physicochemical Characterization and Applications

Natural Sources  Physicochemical Characterization and Applications
Author: Constantin Apetrei
Publsiher: Bentham Science Publishers
Total Pages: 313
Release: 2016-11-30
ISBN: 1681083418
Category: Science
Language: EN, FR, DE, ES & NL

Natural Sources Physicochemical Characterization and Applications Book Excerpt:

This volume presents different aspects related to bioactive compounds, starting with their natural state in raw sources, physicochemical characterization and employment in pharmacy and medicine. The volume is divided into three parts. The first part describes the chemicals structure of bioactive compounds from different natural sources such as olive oils, wines, and medicinal plants. Special attention has been given to identifying the bioactive composition within variations of these natural sources (for example, extra virgin, ordinary or lampante olive oils). The second part of the volume presents the principal methods used for detecting, identifying and quantifying bioactive compounds. Emphasis is given to the use of different types of sensors or biosensors, and multisensor systems in combination with analytical techniques. The final part explains the principal methods for protection of bioactive compounds and the implication of bioactive compounds in pharmacy. This volume is a useful guide for novice researchers interested in learning research methods to study bioactive compounds. Frontiers in Bioactive Compounds brings edited reviews on the analysis and characterization of natural compounds of medicinal interest. Each volume covers useful information on a variety of natural sources as well as analytical techniques. This series is essential reading for analytical and medicinal chemists as well as professionals involved in natural and pharmaceutical product research and development.

Isolation Characterization and Therapeutic Applications of Natural Bioactive Compounds

Isolation  Characterization  and Therapeutic Applications of Natural Bioactive Compounds
Author: Singh, Ajeet
Publsiher: IGI Global
Total Pages: 420
Release: 2022-06-30
ISBN: 1668473380
Category: Medical
Language: EN, FR, DE, ES & NL

Isolation Characterization and Therapeutic Applications of Natural Bioactive Compounds Book Excerpt:

Natural products have historically been key to drug discovery and therapeutic applications throughout many societies. In the modern era, natural bioactive compounds can be isolated, and their effects can be further studied for more successful outcomes. It is essential to study these natural bioactive compounds to enhance pharmaceuticals and drug discovery. Isolation, Characterization, and Therapeutic Applications of Natural Bioactive Compounds examines the applications of natural bioactive compounds from a health perspective. It discusses medicinal and therapeutic applications of natural bioactive molecules as well as the biological activities of different natural products and their properties. Covering topics such as drug discovery, government regulations, and phytochemical extraction, this premier reference source is an excellent resource for pharmacists, medical practitioners, phytologists, hospital administrators, government officials, faculty and students of higher education, librarians, researchers, and academicians.

Bioactive Compounds from Multifarious Natural Foods for Human Health

Bioactive Compounds from Multifarious Natural Foods for Human Health
Author: Hafiz Ansar Rasul Suleria,Megh R. Goyal,Huma Bader Ul Ain
Publsiher: CRC Press
Total Pages: 338
Release: 2022-08-01
ISBN: 1000410110
Category: Health & Fitness
Language: EN, FR, DE, ES & NL

Bioactive Compounds from Multifarious Natural Foods for Human Health Book Excerpt:

Divided into two sections, the volume first examines health claims of food-based bioactive compounds, which are extra-nutritional constituents that typically occur in small quantities in foods. This section lays out the concepts of extraction of food-based bioactive molecules, along with both conventional and modernized extraction techniques. The book goes to present new research on health claims of bioactive compounds from medicinal plants, their importance, and health perspectives. Both sections cover the various pharmacological and therapeutic aspects of bioactive compounds, along with their methods of extraction, their phytochemistry, their pharmacological and biological activities, their medicinal properties, and their applications for disease management and prevention. This volume sheds new light on the potential of natural and plant-based foods for human health from different technological aspects, contributing to the ocean of knowledge on food science and technology.

Human Health Benefits of Plant Bioactive Compounds

Human Health Benefits of Plant Bioactive Compounds
Author: Megh R. Goyal,Hafiz Ansar Rasul Suleria
Publsiher: CRC Press
Total Pages: 396
Release: 2019-07-23
ISBN: 0429856164
Category: Health & Fitness
Language: EN, FR, DE, ES & NL

Human Health Benefits of Plant Bioactive Compounds Book Excerpt:

Focusing on the importance of functional foods and their secondary metabolites for human health, this volume presents new insights with scientific evidence on the use of functional foods in the treatment of certain diseases. The plants covered and their bioactive compounds are easily accessible and are believed to be effective with fewer side effects in comparison with modern drugs in the treatment of different diseases. The plants contain chemical compounds that can modify and modulate biological systems, eliciting therapeutic effects. Some plants and derived products mentioned include black carrot, olive oil, citrus peel, grapes, candy leaf, cereals and grains, and green and black tea. The volume is divided into four sections that cover these topics: Functional foods for human health: the available sources, biochemistry, structural composition, and different biological activities, especially antioxidant activity. Pharmacological aspects of fruits and vegetables: the extraction of bioactive molecules, phytochemistry, and biological activities of a selection of plants. Pharmacological aspects of natural products: bioactive compounds, structural attributes, bioactivity of anthocyanin, piceatannol, and a review of the ethnobotany and medicinal properties of green and black tea. Pharmacological aspects of cereals and grains: the health benefits of flaxseed, wheatgrass juice, and use and therapeutic potential as supplements for disease management.

Bioactive Compounds from Natural Products

Bioactive Compounds from Natural Products
Author: Emanuel Vamanu
Publsiher: Mdpi AG
Total Pages: 204
Release: 2022-06-02
ISBN: 9783036541976
Category: Science
Language: EN, FR, DE, ES & NL

Bioactive Compounds from Natural Products Book Excerpt:

Dear colleagues, This Special Issue aims to publish new and innovative research that could demonstrate the therapeutic potential of natural health products, through relevant in vitro and/or in vivo biological activities, to prevent or alleviate degenerative diseases. The interaction of natural health products with human microbiota represents an essential aspect, because it could modulate the microbial pattern and alleviate more of a chronic disease's effects in the case of type 2 diabetes, cardiovascular dysfunctions, neurodegenerative diseases, and inflammatory colon pathologies. Additionally, you are invited to send research based on the effect of different extracts or functional foods used in degenerative pathologies and interactions with human microbiota. We aim to identify new data on in vitro/in vivo research that could demonstrate the bioavailability of natural compounds and the relationship with antioxidant/antimicrobial capacity. Modulated microbiota aspects are expected to be published based on the interaction with natural compounds, natural sweeteners, or other molecules that influence the colon health status.

Bioactive Compounds from Plants

Bioactive Compounds from Plants
Author: Derek J. Chadwick,Joan Marsh
Publsiher: John Wiley & Sons
Total Pages: 254
Release: 2008-04-30
ISBN: 0470514019
Category: Science
Language: EN, FR, DE, ES & NL

Bioactive Compounds from Plants Book Excerpt:

Useful throughout history for their medical as well as other benefits, plant-derived compounds have gained particular importance recently, due to environmental factors. The isolation and characterization of plant products, the identification of their role in the plant, and ways of synthesizing identical compounds or more potent analogues are covered. Also includes methods of culturing plant tissues and genetic engineering as a means of increasing the yield of desired substances from plants. Special emphasis is placed on plants previously unknown to Western scientists.