Edible fats and oils : their composition, manufacture and analysis / by W.H. Simmons and C. Ainsworth Mitchell.

  • Simmons, W. H. (William Herbert)
Date:
1911
Catalogue details

Licence: Public Domain Mark

Credit: Edible fats and oils : their composition, manufacture and analysis / by W.H. Simmons and C. Ainsworth Mitchell. Source: Wellcome Collection.

    21/200 (page 9)
    in water, such as acetic, propionic, butyric, caproic, caprylic, and capric, remaining for the most part dissolved in the aqueous portion underneath. All the acids naturally present in fats and oi!s are mono- basic, 7.e. contain only one carboxyl (COOH) group, but they may be arranged in five classes or homologous series, based on their chemical constitution, these series having the following general formule :— I. Stearic Acid Series IT. Oleic Acid Series II]. Linolic Acid Series IV. Linolenic Acid Series . Ce OOUR. VY. Ricinoleic Acid Series C,He-,COOH. The more important members of these series, together C,H,,,., COOH. C_H,,, ,COOH. C_H,,,.,COOH. with their formule, melting points, and principal occurrence, | Acid. | Formula. Mtoe} Found in— | point, °C. | Acetic -CH{COOH. 17 Macassar oil. | Butyric | C,H,COOH | Butter, macassar oil. | Isovaleric. | €,H,COOM Porpoise and dolphin oils. | Caproic C;H,,COOH oe | Butter, cocoanut oil. | Caprylic . C,H,,COOH 15 | Butter, cocoanut oil, Limburg cheese. Capric C,H,,;COOH 30 Butter, cocoanut oil. | Lauric C,,H,,.COOH 44 Cocoanut oil, palm kernel oil. Ficocerylic ot Cap ltgeC OOH aa Pisang wax. Myristic . - | C,H,COOH 54 Nutmeg butter, liver fat, cocoa- | | nut oil, dika fat, croton oil. | Palmitic . 2 Ciel COOH 62°5 Palm oil, most animal fats. | Daturic | C,,H,,COOH oe | Oil of Datura Stamonium. | Stearic | C,,H,,;COOH 69 | Tallow, lard, most solid animal | | fats. | Arachidic . | Gi,H.,COOH 75 Arachis or earth-nut oil, rape | and mustard seed oils. | Behenic Pie, bsCOOH Ben oil, black mustard seed oil, | | rape oil. | Lignoceric i CnselpCOOH 80°5 Arachis oil. Carnaubic . | CyHyCOOH | Carnauba wax. Continued, paye 10.