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Though the proteids form a class of organic compounds which is easily distinguished from the other great groups, like the fats, the oils, the carbohydrates, et oetera, yet no exact def inition of a proteid can be given. This is owing to the lim~ itations of our knowledge of both their composition and their structure. In regard to their composition it can be stated with certainty that the elements, carbon, hydrogen, oxygen, nitrogen, and sulphur are always present and in proportions varying, With in definite limits, and but slightly amongst the different pro teids. Our knowledge of their structure is very meagre, however, and is derived principally from studies of their decompos1tion products. These studies show that all proteids are closely associated in regard to both structure and chemical properties. It is not my purpose at this point, however, to discuss the pro teids in these particulars. In passing it will suffice to state concerning their structure, that the chief decozposition pro ducts are amido-acids of the aliphatic series, and concerning their chemical properties, that the proteids possess no very marked acid or basic properties, but form With both acids and bases, salts in Which the affinity for both the acid and base is very weak.
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Paperback. Zustand: New. Print on Demand. This book delves into the fascinating world of proteids, a class of organic compounds essential to life. The author guides the reader through the historical context of proteid research, highlighting the challenges faced by scientists in understanding their complex composition and structure. The book explores a variety of methods used to break down proteids into their component parts, with particular emphasis on the techniques developed by Emil Fischer, a pioneer in this field. The text offers a detailed look at the chemical properties of proteids, including their reactions with various reagents, their behavior under different conditions, and the various methods employed for their decomposition. The reader will gain a deep understanding of the intricate building blocks of proteids and the ways in which they can be broken down, analyzed, and even potentially synthesized. This book offers a valuable resource for anyone interested in the history and science of organic chemistry, particularly the study of the fundamental building blocks of life. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9780428024086_0
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