Electrolysis of coconut fatty acids in anhydrous methanol

  • Corazon P. Macalisang Chemistry Department, Mindanao State University, Marawi, Lanao del Norte
  • Florentino C. Sumera Institute of Chemistry, University of the Philippines, Quezon City
Keywords: oleochemicals, coconut fatty acids, electrolysis, 1-undecanol, antifungal property


Electrolysis of coconut fatty acids in anhydrous methanol in the presence of KCl and KOH at 50°C with Pt as cathode and C as anode produced high yield of product (96% by mass). Separation of the product into fractions by column chromatography and subsequent analysis by IR, GC, and GC-Mass spectroscopy gave the following compositions of the column fractions: 7.68% fatty alkene and fatty alkyl chloride (in the n-hexane fraction), 44.01% fatty ether (in the 90:10 v/v n-hexane:ethyl acetate fraction), 38.45% of probable mixtures of fatty alcohols and fatty esters (in the 60:40 v/v n-hexane:ethyl acetate fraction) and the rest 9.86% of undetermined composition adsorbed in the silica gel column. The identity of most of the compounds in the column fractions were identified by GC-Mass spectroscopy. The electrolysis product showed positive antimicrobial activity against the fungi, Trichophyton mentagrophytes but no activity towards the bacteria Staphylococcus aureus and Escherichia coli and the yeast Candida albicans. This bioactivity was traced to the column fraction containing the active 1-undecanol.
How to Cite
Macalisang, C. P., & Sumera, F. C. (2003). Electrolysis of coconut fatty acids in anhydrous methanol. KIMIKA, 19(1), 7-15. https://doi.org/10.26534/kimika.v19i1.7-15
Research Articles