Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity
Crude dihydroxystearic acid was prepared from palm based oleic acid and was then solvent purified with isopropyl alcohol in a custom fabricated simultaneous batch crystallizer unit. The crystallized dihydroxystearic acid was a functional ingredient that acted as multipurpose intermediate for synthes...
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| Format: | Article |
| Language: | English |
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Elsevier
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23053/ http://psasir.upm.edu.my/id/eprint/23053/1/Solvent%20crystallization%20of%20palm%20based%20dihydroxystearic%20acid%20with%20isopropyl%20alcohol.pdf |
| _version_ | 1848844651438538752 |
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| author | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw |
| author_facet | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw |
| author_sort | Koay, Gregory Feng Ling |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Crude dihydroxystearic acid was prepared from palm based oleic acid and was then solvent purified with isopropyl alcohol in a custom fabricated simultaneous batch crystallizer unit. The crystallized dihydroxystearic acid was a functional ingredient that acted as multipurpose intermediate for synthesis of various fine chemicals, cosmetics and personal care products. The effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity were studied. The crystals were purer but smaller and the span of the distribution curve was wider at higher solvent quantity and concentration. Through scanning electron microscopy and X-ray diffraction, it was observed that the crystals agglomerated into plate-like (flaky) habit with triclinic crystal structure. Solvent crystallization with 80% IPA at 20°C and solute:solvent ratio of 1.0:1.0 was the most optimized and efficient, producing β-DHSA crystals that has high resistance against fat exudation during vacuum filtration process. |
| first_indexed | 2025-11-15T08:34:19Z |
| format | Article |
| id | upm-23053 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T08:34:19Z |
| publishDate | 2011 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-230532015-12-03T07:38:43Z http://psasir.upm.edu.my/id/eprint/23053/ Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw Crude dihydroxystearic acid was prepared from palm based oleic acid and was then solvent purified with isopropyl alcohol in a custom fabricated simultaneous batch crystallizer unit. The crystallized dihydroxystearic acid was a functional ingredient that acted as multipurpose intermediate for synthesis of various fine chemicals, cosmetics and personal care products. The effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity were studied. The crystals were purer but smaller and the span of the distribution curve was wider at higher solvent quantity and concentration. Through scanning electron microscopy and X-ray diffraction, it was observed that the crystals agglomerated into plate-like (flaky) habit with triclinic crystal structure. Solvent crystallization with 80% IPA at 20°C and solute:solvent ratio of 1.0:1.0 was the most optimized and efficient, producing β-DHSA crystals that has high resistance against fat exudation during vacuum filtration process. Elsevier 2011-07 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23053/1/Solvent%20crystallization%20of%20palm%20based%20dihydroxystearic%20acid%20with%20isopropyl%20alcohol.pdf Koay, Gregory Feng Ling and Chuah, Teong Guan and Zainal Abidin @ Murad, Sumaiya and Ahmad, Salmiah and Choong, Thomas Shean Yaw (2011) Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity. Industrial Crops and Products, 34 (1). pp. 1135-1140. ISSN 0926-6690; ESSN: 1872-633X 10.1016/j.indcrop.2011.03.030 |
| spellingShingle | Koay, Gregory Feng Ling Chuah, Teong Guan Zainal Abidin @ Murad, Sumaiya Ahmad, Salmiah Choong, Thomas Shean Yaw Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title | Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title_full | Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title_fullStr | Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title_full_unstemmed | Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title_short | Solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| title_sort | solvent crystallization of palm based dihydroxystearic acid with isopropyl alcohol: effects of solvent quantity and concentration on particle size distribution, crystal habit and morphology, and resultant crystal purity |
| url | http://psasir.upm.edu.my/id/eprint/23053/ http://psasir.upm.edu.my/id/eprint/23053/ http://psasir.upm.edu.my/id/eprint/23053/1/Solvent%20crystallization%20of%20palm%20based%20dihydroxystearic%20acid%20with%20isopropyl%20alcohol.pdf |