Composition of crystals of palm olein formed at room temperature
The composition of purified plam olein crystals formed at room temperature (25°C) was identified in this study. Two peaks were obtained when the crystals were analyzed by reverse-phase high-performance liquid chromatography (RP-HPLC). The retention times of these peaks suggested that they were not t...
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| Format: | Article |
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AOCS Press
1995
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| Online Access: | http://psasir.upm.edu.my/id/eprint/116333/ |
| _version_ | 1848866977350680576 |
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| author | Swe, P.Z. Che Man, Y.B. Ghazali, H.M. |
| author_facet | Swe, P.Z. Che Man, Y.B. Ghazali, H.M. |
| author_sort | Swe, P.Z. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The composition of purified plam olein crystals formed at room temperature (25°C) was identified in this study. Two peaks were obtained when the crystals were analyzed by reverse-phase high-performance liquid chromatography (RP-HPLC). The retention times of these peaks suggested that they were not triglycerides. Gas-liquid chromatography of fatty acid methyl ester analysis of the crystals showed the presence of C16, C18:0, and C18:1 fatty acids. Further analysis by gas-liquid chromatography of carbon number, after collecting the fractions from RP-HPLC, concluded that the major peak A was 1,3-dipalmito-glycerol. The minor peak B was tentatively identified as 1-palmito-3-stearo-glycerol and/or 1-palmito-3-oleo-glycerol due to unavailability of respective standard glycerides. The differential scanning calorimetry thermogram of the crystals show that A and B were indeed the high melting glycerides, with melting and crystallization points of 70.4 and 53.8°C, respectively. |
| first_indexed | 2025-11-15T14:29:10Z |
| format | Article |
| id | upm-116333 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-15T14:29:10Z |
| publishDate | 1995 |
| publisher | AOCS Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1163332025-03-25T02:14:11Z http://psasir.upm.edu.my/id/eprint/116333/ Composition of crystals of palm olein formed at room temperature Swe, P.Z. Che Man, Y.B. Ghazali, H.M. The composition of purified plam olein crystals formed at room temperature (25°C) was identified in this study. Two peaks were obtained when the crystals were analyzed by reverse-phase high-performance liquid chromatography (RP-HPLC). The retention times of these peaks suggested that they were not triglycerides. Gas-liquid chromatography of fatty acid methyl ester analysis of the crystals showed the presence of C16, C18:0, and C18:1 fatty acids. Further analysis by gas-liquid chromatography of carbon number, after collecting the fractions from RP-HPLC, concluded that the major peak A was 1,3-dipalmito-glycerol. The minor peak B was tentatively identified as 1-palmito-3-stearo-glycerol and/or 1-palmito-3-oleo-glycerol due to unavailability of respective standard glycerides. The differential scanning calorimetry thermogram of the crystals show that A and B were indeed the high melting glycerides, with melting and crystallization points of 70.4 and 53.8°C, respectively. AOCS Press 1995 Article PeerReviewed Swe, P.Z. and Che Man, Y.B. and Ghazali, H.M. (1995) Composition of crystals of palm olein formed at room temperature. Journal of the American Oil Chemists' Society, 72 (3). pp. 343-347. ISSN 1558-9331; eISSN: 0003-021X https://aocs.onlinelibrary.wiley.com/doi/10.1007/BF02541094 10.1007/BF02541094 |
| spellingShingle | Swe, P.Z. Che Man, Y.B. Ghazali, H.M. Composition of crystals of palm olein formed at room temperature |
| title | Composition of crystals of palm olein formed at room temperature |
| title_full | Composition of crystals of palm olein formed at room temperature |
| title_fullStr | Composition of crystals of palm olein formed at room temperature |
| title_full_unstemmed | Composition of crystals of palm olein formed at room temperature |
| title_short | Composition of crystals of palm olein formed at room temperature |
| title_sort | composition of crystals of palm olein formed at room temperature |
| url | http://psasir.upm.edu.my/id/eprint/116333/ http://psasir.upm.edu.my/id/eprint/116333/ http://psasir.upm.edu.my/id/eprint/116333/ |