Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid
Octyl dihydroxystearate was synthesized enzymatically to overcome the problems associated with chemical processes such as high energy costs and degradation of ester. Immobilized enzyme, Lipozyme IM was employed as catalyst in the esterification reaction between dihydroxystearic acid (DHSA) and 1-oct...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
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Japan Oil Chemists' Society
2003
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| Online Access: | http://psasir.upm.edu.my/id/eprint/8750/ http://psasir.upm.edu.my/id/eprint/8750/1/Enzyme.pdf http://psasir.upm.edu.my/id/eprint/8750/7/52_7.pdf |
| _version_ | 1848840957855793152 |
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| author | Awang, Roila Basri, Mahiran Ahmad, Salmiah Salleh, Abu Bakar |
| author_facet | Awang, Roila Basri, Mahiran Ahmad, Salmiah Salleh, Abu Bakar |
| author_sort | Awang, Roila |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Octyl dihydroxystearate was synthesized enzymatically to overcome the problems associated with chemical processes such as high energy costs and degradation of ester. Immobilized enzyme, Lipozyme IM was employed as catalyst in the esterification reaction between dihydroxystearic acid (DHSA) and 1-octanol. The product obtained was characterized by chromatographic and spectroscopic methods (thin-layer chromatography, gas chromatography, fourier transform infrared, nuclear magnetic resonance spectroscopy) as well as wet chemistry. The crude product has a melting point of 59.0°C, saponification value of 140.5 mgKOH/g, hydroxyl value of 223.9 mgKOH/g and acid value of 7.9 mgKOH/g. The yield was about 95% with respect to the amount of DHSA used. The product obtained was found to contain octyl dihydroxystearate, octyl palmitate and octyl stearate. This compound was found to be nonirritating. |
| first_indexed | 2025-11-15T07:35:36Z |
| format | Article |
| id | upm-8750 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T07:35:36Z |
| publishDate | 2003 |
| publisher | Japan Oil Chemists' Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-87502024-08-07T07:04:39Z http://psasir.upm.edu.my/id/eprint/8750/ Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid Awang, Roila Basri, Mahiran Ahmad, Salmiah Salleh, Abu Bakar Octyl dihydroxystearate was synthesized enzymatically to overcome the problems associated with chemical processes such as high energy costs and degradation of ester. Immobilized enzyme, Lipozyme IM was employed as catalyst in the esterification reaction between dihydroxystearic acid (DHSA) and 1-octanol. The product obtained was characterized by chromatographic and spectroscopic methods (thin-layer chromatography, gas chromatography, fourier transform infrared, nuclear magnetic resonance spectroscopy) as well as wet chemistry. The crude product has a melting point of 59.0°C, saponification value of 140.5 mgKOH/g, hydroxyl value of 223.9 mgKOH/g and acid value of 7.9 mgKOH/g. The yield was about 95% with respect to the amount of DHSA used. The product obtained was found to contain octyl dihydroxystearate, octyl palmitate and octyl stearate. This compound was found to be nonirritating. Japan Oil Chemists' Society 2003 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/8750/1/Enzyme.pdf text en http://psasir.upm.edu.my/id/eprint/8750/7/52_7.pdf Awang, Roila and Basri, Mahiran and Ahmad, Salmiah and Salleh, Abu Bakar (2003) Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid. Journal of Oleo Science, 52 (1). pp. 7-14. ISSN 1345-8957; ESSN: 1347-3352 https://www.jstage.jst.go.jp/article/jos/52/1/52_1_7/_article 10.5650/jos.52.7 |
| spellingShingle | Awang, Roila Basri, Mahiran Ahmad, Salmiah Salleh, Abu Bakar Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title | Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title_full | Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title_fullStr | Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title_full_unstemmed | Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title_short | Enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| title_sort | enzyme-catalyzed synthesis and characterization of octyl dihydroxystearate from palm-based dihydroxystearic acid |
| url | http://psasir.upm.edu.my/id/eprint/8750/ http://psasir.upm.edu.my/id/eprint/8750/ http://psasir.upm.edu.my/id/eprint/8750/ http://psasir.upm.edu.my/id/eprint/8750/1/Enzyme.pdf http://psasir.upm.edu.my/id/eprint/8750/7/52_7.pdf |