| Autor: |
Verberg, Gerald, McCall, Elizabeth R., O'Connor, Robert T., Dollear, F. G. |
| Zdroj: |
Journal of the American Oil Chemists' Society; January 1961, Vol. 38 Issue: 1 p33-39, 7p |
| Abstrakt: |
Crude cottonseed oils were shown to have spectra of two types, those exhibiting a single maximum at about 360 mµ and those exhibiting a double maxima at about 375 and 400 mµ. Gossypol and cottonseed oil pigments which absorb below about 375 mµ are trapped by molecular sieve No. 13X, appear in the hydrophilic phase in countercurrent distribution of the oil between 95% ethanol and isooctane, and are found in the liquid fraction on crystallization of oil from acetone at -63°C. Those pigments not admitted by molecular sieve No. 13X are found in the hydrophobic phase in countercurrent distribution and in the solid fraction from low-temperature crystallization. Only countercurrent distribution achieved separation of both types of pigments from the triglycerides. Insufficient quantities of pigments were isolated for any extensive characterization. Use of large-scale apparatus would appear to make it possible to separate the pigments for characterization and evaluation of their relation to the refining properties of oils. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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