MICROBIAL TRANSFORMATIONS OF BIOACTIVE COMPOUNDS


Book Description

Volume 1: Notes on the historical development of microbial transformations; The methodology of microbial transformations of organic compounds; Microbial transformations of antibiotics; Microbial transformation of important industrial hydrocarbons; Microbial transformations of prostaglandins. Volume 2: Microbial transformations as a means of preparing mammalian drug metabolites; Transformations of xenobiotics by the intestinal microflora; Microbial transformations of alkaloids; Microbial transformations of cannabinoids; Microbial transformations of pesticides.







Biotransformation studies on bioactive compounds: 25 years of interesting research at the ICCBS


Book Description

Biotransformation of natural, synthetic, and semi-synthetic compounds has emerged as a frontier branch of chemical sciences that is progressively being applied in numerous fields. In the present review, we have summarized our biotransformation studies on bioactive compounds from 1997 to 2022. Various microbial and plant cell cultures were used for biocatalytic structural transformations. We present here an overview of biotransformation of 53 compounds belonging to various classes of natural, synthetic, and semi-synthetic compounds, published in several leading journals. The structures of the resulting metabolites have been elucidated by detailed spectroscopic studies. Oxidation, reduction, dehydrogenation, chlorination, aromatization, methylation, demethylation, rearrangements, etc. were the main reactions that occurred during the biotransformation processes. Many of the biotransformed products exhibited interesting biological activities. Structural transformations in some cases have also led to improved pharmacokinetic profiles. This review is aimed to provide a focused account of extensive work carried out in our laboratories in this field, as well as the immense potential of biocatalytic transformations in organic chemistry.




Introduction to Biocatalysis Using Enzymes and Microorganisms


Book Description

This book gives an introduction to biotransformations, the practice of harnessing biological catalysts for the preparation of useful chemicals.




Bioactive Compounds in Fermented Foods


Book Description

The volume reviews different types of bioactive components associated with food fermentation and their impact on human health. The diversity of microorganism responsible for the production of different types of fermented foods and beverages includes bacteria, yeasts, and fungi. Biotransformation of food constituent by microorganisms occurs during fermentation processes for the production of fermented food and in the gastrointestinal tract by gut microorganisms. This biotransformation results in production of specific bioactive compounds that are responsible for a wide range of health benefits. The bioactive compounds discussed in this book includes polyphenols, bioactive peptides, fibrinolytic enzymes, gama-amino butyric acids (GABA) exopolysaccharides, probiotic, prebiotic, symbiotic and antinutritional factors. These bioactive compounds are responsible for health benefits such as antioxidant, antihypertension, antimicrobial, cholesterol lowering, anticancer, obesity and antithrombotic properties. Advanced research in the field of food fermentation and their health benefits have resulted in commercialization of some of the fermented foods as functional foods. The traditional fermented foods consumed in different parts of the world and their health benefits are discussed in detail and the book concludes with recent advances in microbial transformation during gut fermentation and their impact on human health. There has been increasing interest among researchers on the proposed title in the last decade and the book brings updated information on research and advances in different types of health benefits exhibited by bioactive compounds in a wide range of fermented foods.




Bioactive Natural Products (Part D)


Book Description

Natural products play an integral and ongoing role in promoting numerous aspects of scientific advancement, and many aspects of basic research programs are intimately related to natural products. The significance, therefore, of the Studies in Natural Product Chemistry series, edited by Professor Atta-ur-Rahman, cannot be overestimated. This volume, in accordance with previous volumes, presents us with cutting-edge contributions of great importance.




Semisynthesis of Bioactive Compounds and their Biological Activities


Book Description

Semisynthesis of Bioactive Compounds and their Biological Activities explores the potential benefits of semisynthetic derivatives obtained from nature. Sections cover the natural distribution of parent compounds, semisynthesis and biological properties of semisynthetic derivatives, the applications of semisynthetic derivatives in diverse fields such as drug delivery, food production and medicine, an explanation of the current resistance mechanisms of antibiotics, clinical applications of semisynthetic analogues, the functions of plant alkaloids on human health, potential agricultural biotechnology in semisynthetic derivatives, and semisynthesis of natural products under greener conditions, this book provides a comprehensive resource on the topics presented. Sections include information about alternative sources of energy and superior greener technologies (microwave, sonochemistry), alternative reaction media (water, supercritical CO2, ionic liquids) and alternative eco-friendly catalysts (biocatalysts). This book will be an excellent resource for academicians, researchers and students focusing on synthesis as well as the biological community and industry professionals in drug development. - Focuses on the current resistance mechanisms of antibiotics, chemical derivatization of antibiotics, and clinical applications of semisynthetic derivatives. - Includes discussion of the semisynthesis of natural products using green tools, green solvents, and eco-friendly catalysts. - Illustrates the concept of toxicity, the merits of transition-metal-free reactions, and the semisynthesis of natural products by introducing the oxygen atom(s) under transition-metal-free conditions.




Biotransformations and Bioprocesses


Book Description

From the laboratory to full-scale commercial production, this reference provides a clear and in-depth analysis of bioreactor design and operation and encompasses critical aspects of the biocatalytic manufacturing process. It clarifies principles in reaction and biochemical engineering, synthetic and biotransformation chemistry, and biocell and enzyme kinetics for successful applications of biocatalysis and bioprocess technologies in the food, chiral drug, vitamin, pharmaceutical, and animal feed industries. Studying reactions from small to supramolecules, this reference provides an abundant supply of end-of-chapter problems to sharpen understanding of key concepts presented in the text.