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 |
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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 |
| _version_ | 1818530429821517824 |
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| author | Yan Jie Yang Jinlan Yang Rifu He Haifen Liu Qihai Lin Hailin |
| author_facet | Yan Jie Yang Jinlan Yang Rifu He Haifen Liu Qihai Lin Hailin |
| author_sort | Yan Jie |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-11T17:19:35Z |
| format | Article |
| id | doaj.art-f73a131f957d493195ed2b66e2e30227 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-11T17:19:35Z |
| publishDate | 2016-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-f73a131f957d493195ed2b66e2e302272022-12-22T00:57:13ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212016-01-0181214115110.2298/JSC150504082Y0352-51391500082YFormation of conjugated double bonds in soybean oil with iodine as a catalystYan Jie0Yang Jinlan1Yang Rifu2He Haifen3Liu Qihai4Lin Hailin5Zhongkai University of Agriculture and Engineering, College of Chemistry and Chemical Engineering, Guangzhou, ChinaZhongkai University of Agriculture and Engineering, College of Chemistry and Chemical Engineering, Guangzhou, ChinaSouth China University of Technology, School of Physics and Optoelectronics, Guangzhou, ChinaZhongkai University of Agriculture and Engineering, College of Chemistry and Chemical Engineering, Guangzhou, ChinaZhongkai University of Agriculture and Engineering, College of Chemistry and Chemical Engineering, Guangzhou, ChinaZhongkai University of Agriculture and Engineering, College of Chemistry and Chemical Engineering, Guangzhou, ChinaA 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.http://www.doiserbia.nb.rs/img/doi/0352-5139/2016/0352-51391500082Y.pdfsoybean oilconjugationiodinelinoleic acidlinolenic acid |
| spellingShingle | Yan Jie Yang Jinlan Yang Rifu He Haifen Liu Qihai Lin Hailin Formation of conjugated double bonds in soybean oil with iodine as a catalyst Journal of the Serbian Chemical Society soybean oil conjugation iodine linoleic acid linolenic acid |
| title | Formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| title_full | Formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| title_fullStr | Formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| title_full_unstemmed | Formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| title_short | Formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| title_sort | formation of conjugated double bonds in soybean oil with iodine as a catalyst |
| topic | soybean oil conjugation iodine linoleic acid linolenic acid |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2016/0352-51391500082Y.pdf |
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