Proceedings of the 2nd International Conference on Science Education and Sciences 2022 (ICSES 2022)

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Separation of Unsaturated Fatty Acids of Nyamplung Oil Using Urea Crystallization as Basic Ingredients of Synthesis Dihydroxy Stearic Acid

Authors
Erin Ryantin Gunawan1, *, Dedy Suhendra1, Dina Marlina Oktavia1, Murniati1
1Department of Chemistry, Faculty of Mathematics and Natural Sciences, University of Mataram, Mataram, Indonesia
*Corresponding author. Email: erinryantin@unram.ac.id
Corresponding Author
Erin Ryantin Gunawan
Available Online 17 August 2023.
DOI
10.2991/978-94-6463-232-3_29How to use a DOI?
Keywords
Dihydroxy Stearic Acid; Unsaturated Fatty Acids; Crystallization Urea; Hydroxylation; Nyamplung Oil
Abstract

Dihydroxy stearate acid (DHSA) is a compound used as an emulsifier and additive in cosmetic formulations. This study aims to separate the unsaturated fatty acids of nyamplung oil, synthesis DHSA, Characterization of unsaturated fatty acids and DHSA compounds. The separation of unsaturated fatty acids using the urea crystallization method. The unsaturated fatty acids obtained were used as the primary material synthesis of DHSA through the hydroxylation of epoxide compounds. The results of separated were yellow, with an iodine value of 55.84 g I2/100 g, a hydroxyl number of 11.22 mg KOH/g, and the highest unsaturated fatty acid content was obtained at the ratio of urea: fatty acids (8.571:1 w/w) which were 26.33%. The percentage of unsaturated fatty acids based on GC-MS results after urea crystallization is 97.76%. DHSA produced by hydroxylation of epoxy compounds has a yellow and waxy texture (semi-solid), has a molecular weight of 317 g/mol, with an oxirane number of 0.088%, and a hydroxyl number of 89.76 mg KOH/g. DHSA compounds are characterized by the appearance of hydroxyl absorption at the wave number 3340.60 cm−1 and the loss of the oxirane group on the FTIR spectrum.

Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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Volume Title
Proceedings of the 2nd International Conference on Science Education and Sciences 2022 (ICSES 2022)
Series
Advances in Physics Research
Publication Date
17 August 2023
ISBN
978-94-6463-232-3
ISSN
2352-541X
DOI
10.2991/978-94-6463-232-3_29How to use a DOI?
Copyright
© 2023 The Author(s)
Open Access
Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

Cite this article

risenwbib
TY  - CONF
AU  - Erin Ryantin Gunawan
AU  - Dedy Suhendra
AU  - Dina Marlina Oktavia
AU  - Murniati
PY  - 2023
DA  - 2023/08/17
TI  - Separation of Unsaturated Fatty Acids of Nyamplung Oil Using Urea Crystallization as Basic Ingredients of Synthesis Dihydroxy Stearic Acid
BT  - Proceedings of the 2nd International Conference on Science Education and Sciences 2022 (ICSES 2022)
PB  - Atlantis Press
SP  - 286
EP  - 299
SN  - 2352-541X
UR  - https://doi.org/10.2991/978-94-6463-232-3_29
DO  - 10.2991/978-94-6463-232-3_29
ID  - Gunawan2023
ER  -