Separation of saturated and unsaturated fatty acids of palm fatty acid distilled via low-temperature methanol crystallization

Majd Ahmed Jumaah, Mohd Firdaus Mohd Yusoff, Jumat Salimon, Murad Bahadi

Research output: Contribution to journalArticle

Abstract

This study aimed to optimize conditions for the separation process of unsaturated fatty acid (USFA) and saturated fatty acid (SFA) from palm fatty acid distilled by using low-temperature methanol solvent crystallization method. Several parameters were optimized to improve the solvent crystallization. The fatty acid composition analysis was carried out using a gas chromatography-flame ionization detector as fatty acid methyl esters. The results showed that a high percentage of SFA was found to be more than 95% with the percentage yield of 52%, and USFA was more than 93% with the percentage yield of 48%. This observation was found under the optimal conditions of which fatty acids-to-methanol ratio of 1: 15 (w/v), the crystallization temperature of -15 °C, and the crystallization time of 24 hours, respectively. The composition of separated SFA in the solid fraction contained 80% of palmitic acid (C16:0) as a dominant component, 12.5% of stearic acid (C18:0) and 2.5% of myristic acid (C14:0). The composition of separated USFA in the liquid fraction contained 70.4% of oleic acid (C18:1) as a principal component and 22.6% of linoleic acid (C18:2). The results showed that utilizing methanol as a crystallization solvent was recommended owing to its high efficiency, low cost, stability, availability, the comparative ease of recovery and its ability to form needle-like crystals which had good filtering and washing characteristics.

Original languageEnglish
Pages (from-to)8-16
Number of pages9
JournalMalaysian Journal of Chemistry
Volume21
Issue number2
Publication statusPublished - 1 Jan 2019

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Saturated fatty acids
Unsaturated fatty acids
Crystallization
Unsaturated Fatty Acids
Fatty acids
Methanol
Fatty Acids
Temperature
Chemical analysis
Palmitic acid
Linoleic acid
Stearic acid
Oleic acid
Washing
Gas chromatography
Needles
Ionization
Palmitic Acid
Esters
Myristic Acid

Keywords

  • Fatty acid
  • Palm oil
  • Separation
  • Solvent crystallization

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

Cite this

Separation of saturated and unsaturated fatty acids of palm fatty acid distilled via low-temperature methanol crystallization. / Jumaah, Majd Ahmed; Mohd Yusoff, Mohd Firdaus; Salimon, Jumat; Bahadi, Murad.

In: Malaysian Journal of Chemistry, Vol. 21, No. 2, 01.01.2019, p. 8-16.

Research output: Contribution to journalArticle

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