Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils
Four different commercially refined vegetable oils were analyzed by capillary gas-liquid chromatography for their trans fatty acid contents. The results obtained showed that the total trans FA contents in refined sunflower, corn, soybean, and hazelnut oils were 0.68 ± 0.41, 0.51 ± 0.24, 1.27 ± 0.57,...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2011-09-01
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| Series: | Grasas y Aceites |
| Subjects: | |
| Online Access: | http://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1326 |
| _version_ | 1818457355925323776 |
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| author | M. Tasan U. Gecgel M. Demirci |
| author_facet | M. Tasan U. Gecgel M. Demirci |
| author_sort | M. Tasan |
| collection | DOAJ |
| description | Four different commercially refined vegetable oils were analyzed by capillary gas-liquid chromatography for their trans fatty acid contents. The results obtained showed that the total trans FA contents in refined sunflower, corn, soybean, and hazelnut oils were 0.68 ± 0.41, 0.51 ± 0.24, 1.27 ± 0.57, and 0.26 ± 0.07% of total FA, respectively. The total trans FA comprised isomers of the C18:1, C18:2 and C18:3 FA. Meanwhile, five brands of the refined sunflower oil and two brands of hazelnut oil contained no measurable amounts of total trans C18:3 acids. The total trans C18:2 acid was the predominant trans FA found in the refined sunflower and corn oils, while trans polyunsaturated FAs for the refined soybean oils were found at high levels. However, total trans C18:1 acid was the major trans FA for refined hazelnut oils. The commercially refined vegetable oils with a relatively high total polyunsaturated FA contained considerable amounts of trans polyunsaturated isomers. This study indicates that it is necessary to optimize industrial deodorization, especially the time and temperature, for each different FA composition of oil used. |
| first_indexed | 2024-12-14T22:41:15Z |
| format | Article |
| id | doaj.art-f567d4bebd534ec4999d924113cd8e0d |
| institution | Directory Open Access Journal |
| issn | 0017-3495 1988-4214 |
| language | English |
| last_indexed | 2024-12-14T22:41:15Z |
| publishDate | 2011-09-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Grasas y Aceites |
| spelling | doaj.art-f567d4bebd534ec4999d924113cd8e0d2022-12-21T22:44:58ZengConsejo Superior de Investigaciones CientíficasGrasas y Aceites0017-34951988-42142011-09-0162328428910.3989/gya.1023101297Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oilsM. Tasan0U. Gecgel1M. Demirci2Department of Food Engineering, Agricultural Faculty, Namik Kemal UniversityDepartment of Food Engineering, Agricultural Faculty, Namik Kemal UniversityDepartment of Food Engineering, Agricultural Faculty, Namik Kemal UniversityFour different commercially refined vegetable oils were analyzed by capillary gas-liquid chromatography for their trans fatty acid contents. The results obtained showed that the total trans FA contents in refined sunflower, corn, soybean, and hazelnut oils were 0.68 ± 0.41, 0.51 ± 0.24, 1.27 ± 0.57, and 0.26 ± 0.07% of total FA, respectively. The total trans FA comprised isomers of the C18:1, C18:2 and C18:3 FA. Meanwhile, five brands of the refined sunflower oil and two brands of hazelnut oil contained no measurable amounts of total trans C18:3 acids. The total trans C18:2 acid was the predominant trans FA found in the refined sunflower and corn oils, while trans polyunsaturated FAs for the refined soybean oils were found at high levels. However, total trans C18:1 acid was the major trans FA for refined hazelnut oils. The commercially refined vegetable oils with a relatively high total polyunsaturated FA contained considerable amounts of trans polyunsaturated isomers. This study indicates that it is necessary to optimize industrial deodorization, especially the time and temperature, for each different FA composition of oil used.http://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1326degree of isomerizationdeodorizationtrans isomerrefined vegetable oil |
| spellingShingle | M. Tasan U. Gecgel M. Demirci Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils Grasas y Aceites degree of isomerization deodorization trans isomer refined vegetable oil |
| title | Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| title_full | Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| title_fullStr | Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| title_full_unstemmed | Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| title_short | Comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| title_sort | comparison of geometrical isomerization of unsaturated fatty acids in selected commercially refined oils |
| topic | degree of isomerization deodorization trans isomer refined vegetable oil |
| url | http://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1326 |
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