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Oxidation of Methyl Linoleate in Oil‐in‐Water Micro‐ and Nanoemulsion Systems
Author(s) -
Imai Haruka,
Maeda Tetsuzo,
Shima Motohiro,
Adachi Shuji
Publication year - 2008
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-008-1257-3
Subject(s) - autocatalysis , chemistry , induction period , oxidation process , pulmonary surfactant , oxygen , stoichiometry , nonionic surfactant , kinetics , methyl oleate , redox , water in oil , organic chemistry , emulsion , chemical engineering , catalysis , biochemistry , physics , quantum mechanics , engineering
Abstract Oxidation of methyl linoleate in O/W emulsions having droplets of median diameters ranging from 17 nm to 8.0 μm was carried out at 40°C. The oxidation process was analyzed on the basis of a kinetic equation of the autocatalytic type. The induction period was found to be shorter and the oxidation rate constant lower for emulsions with smaller oil droplets. The stoichiometry between methyl linoleate and oxygen was observed to be independent of both the size of oil droplet and the type of the surfactant and was found to be unity during the early stage of the oxidation. However, more oxgen was consumed in the oxidation of the methyl linoleate in the later half of the oxidation process.