Analysis of linoleate and linolenate by isomerization with potassiumtertiary butoxide in mixtures oftertiary butanol and ethylene glycol dimethyl ether
A simple spectrophotometric procedure is described for determining the content of linoleic and linolenic acid in natural oils. Isomerization is accomplished at 70C with potassiumtertiary butoxide (0.57 M) in 110 min. The absorptivities of linoleic acid (k233=86.9) and linolenic acid (k233=66.9 and k...
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| Veröffentlicht in: | Journal of the American Oil Chemists' Society 1967-08, Vol.44 (8), p.484-484 |
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| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | A simple spectrophotometric procedure is described for determining the content of linoleic and linolenic acid in natural oils. Isomerization is accomplished at 70C with potassiumtertiary butoxide (0.57 M) in 110 min. The absorptivities of linoleic acid (k233=86.9) and linolenic acid (k233=66.9 and k268=46.9) attain a maximum and remain constant thereafter. |
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| ISSN: | 0003-021X 1558-9331 |
| DOI: | 10.1007/BF02908541 |