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Many of the fixed oils are used in medicine, and some of them, such as cod liver, castor and chaulmoogra oils, are of great value in therapy. The discussions in this volume include the general properties of fixed oils and fats, their sources, methods of extraction, constitution and chemical properties, classification and identification, color tests, and methods of analysis. The substances are considered by groups, such as the olive oil group, the castor oil group and the tallow and butter group. Each oil is then considered separately, and the information needed by the analyst and technologist given with completeness. In the chapter on cod liver oil, no mention is made of the fact that this oil may be standardized for its value in deficiency diseases with considerable precision, or that several brands of oil so standardized are now on the market for medicinal use. Likewise, under chaulmoogra oil, hydnocarpus oil
Allen's Commercial Organic Analysis. A Treatise on the Properties, Modes of Analysis, and Proximate Analytical Examination of the Various Organic Chemicals and Products Employed in the Arts, Manufactures, Medicine, Etc., with Concise Methods for the Detection and Estimation of Their Impurities, Adulterations, and Products of Decomposition. JAMA. 1924;83(18):1452. doi:10.1001/jama.1924.02660180070039
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