Formation of conjugated double bonds in soybean oil with iodine as a catalyst
A method for the iodine-catalyzed conjugation of soybean oil was developed, and the conjugated product was analyzed by UV, IR, and 1H NMR. The results indicated that the optimal conditions for conjugation included a temperature of 180°C, a catalyst loading of 0.5 wt.% and a reaction time of...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Serbian Chemical Society
2016-01-01
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| Series: | Journal of the Serbian Chemical Society |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2016/0352-51391500082Y.pdf |
| Summary: | A method for the iodine-catalyzed conjugation of soybean oil was developed,
and the conjugated product was analyzed by UV, IR, and 1H NMR. The results
indicated that the optimal conditions for conjugation included a temperature
of 180°C, a catalyst loading of 0.5 wt.% and a reaction time of 3 h, at which
the concentration of conjugated linoleic acid was 1.51 mol L-1, with 92 %
conversion, the CLNA reached 0.225 mol L-1 when the temperature was 130°C, a
catalyst loading of 0.5 wt.%, and a reaction time of 3 h with a conversion
rate of 99.9 %. The reaction predominantly produced trans-trans, trans-cis
and cis-trans isomers. It was also revealed that the conjugation of linolenic
acid was much faster than that of linoleic acid. The method possessed the
advantages of a short procedure, a high conversion rate, and no methyl
esterification of the raw material, and it was an environmentally friendly
technology that does not use solvents. |
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| ISSN: | 0352-5139 1820-7421 |