ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of physicochemical constants of fats and oils from the composition of their fatty acids using gas-liquid chromatography and constructed alignment chart

V. Koman and E. Danielová

Department of Technical Microbiology and Biochemistry, Slovak Technical University, 880 37 Bratislava

Abstract:  A method of determination of the most often used physicochemi- cal constants of fats and oils by determining their fatty acids by gas — liquid chromatography and using the combined alignment chart constructed for this aim is presented. From this alignment chart we can read the saponi- fication value, refractive index, neutralization value, specific gravity, combustion heat, iodine-saponification factor, and the hardness number. If we use for the determination of the iodine value the method described in our previous work then all these constants can be determined practically on the basis of only one chromatographic record of the corresponding mixture of fatty acids. The time relation of the results obtained in this way is convenient and the values are in good agreement with those given in literature. Conditions for the construction of the alignment chart are also described.

Full paper in Portable Document Format: 292a256.pdf

Chemical Papers 29 (2) 256–264 (1975)