Reaction product of pyrogallol with methyl linoleate and its antioxidant potential for biodiesel

H. Sutanto, L. Ainny, Lukman, B. H. Susanto, M. Nasikin

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)


The demand of biodiesel as an alternative fuel is increasing due to fossil fuel depletion. Biodiesel is a renewable diesel fuel in the form of fatty acid methyl ester or FAME as a result of an esterification of plant oils in a presence of catalyst. Compared to the conventional diesel fuel, biodiesel is more biodegradable, has higher lubricity, and lower toxic emissions. However, the high content of unsaturated fatty acid leads to a problem that biodiesel is prone to oxidation during storage period. This oxidation instability causes degradation of fuel quality and will affect engine performance. Pyrogallol and other phenolic derivatives have been used as the antioxidant additives to prevent biodiesel oxidation. As reported in many researches, pyrogallol is one of the best phenolic antioxidant. However, its low solubility in biodiesel needs an attention. Several reports indicate the increasing solubility of pyrogallol using molecule modification with the addition of alkyl groups to its benzene ring via electrophilic substitution. This paper discusses the idea about modification of pyrogallol molecule and methyl linoleate using 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical in order to increase its solubility in biodiesel while keeping its antioxidant property. Three responses were analyzed to examine the antioxidant activity: iodine value, viscosity, and color intensity. The result shown that the addition of 0.1% reaction product exhibit antioxidant activity in biodiesel.

Original languageEnglish
Article number012019
JournalIOP Conference Series: Materials Science and Engineering
Issue number1
Publication statusPublished - 28 Mar 2018
Event15th International Conference on Quality in Research, QiR 2017 - Nusa Dua, Bali, Indonesia
Duration: 24 Jul 201727 Jul 2017


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