𝔖 Bobbio Scriptorium
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Column Chromatographic Determination of Unsaponifiable Matter in Fats and Oils

✍ Scribed by Kundu, M. K. ;Deb, A. T.

Publisher
John Wiley and Sons
Year
1981
Weight
409 KB
Volume
83
Category
Article
ISSN
0931-5985

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✦ Synopsis

Abstract

A column chromatographic method for determination of unsaponifiable matter (UM) in fats and oils has been developed. The procedure involves saponification of the oil and elution or UM through a mixed bed consisting of an upper layer of calcium oxide and a lower layer of basic aluminium oxide, using diethyl ether as the eluting solvent and finally quantitation of UM by weight. The method eliminates tedious and time‐consuming extraction steps and the consequent problems due to possible emulsion by hydrolysis, UM contents of fats and oils can be determined with very good to excellent accuracy. The relative standard deviation for 6.0 per cent to 0.5 per cent of UM in oils is in the range of 0.5–2.0. The method is simple, readily adaptable, fairly rapid and is equally applicable to soap samples.

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