| Autor: |
Bailey, A. V., Pittman, R. A., Magne, F. C., Skau, E. L. |
| Zdroj: |
Journal of the American Oil Chemists' Society; May 1965, Vol. 42 Issue: 5 p422-424, 3p |
| Abstrakt: |
A spectrophotometric method of analysis for the quantitative estimation of cyclopropenoid fatty acids in cottonseed oil based upon the Halphen-test reaction has been described. Various parameters involved in the reaction have been investigated and two pigment fractions responsible for the characteristic Halphen-test cherry-red color have been isolated. The method is applicable to relatively small amts of sample material. The average deviation from the actual cyclopropenoid acid contents as determined by the stepwise HBr titration method was less than y0.02% in both the refined and crude oil series. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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