Headspace FT-IR Analysis of Rapeseed Oil Oxidation

Authors: Ahro, Mikko; Hakala, Mari; Kauppinen, Jyrki; Kallio, Heikki

Source: Applied Spectroscopy, Volume 56, Issue 2, Pages 50A-69A and 145-274 (February 2002) , pp. 217-222(6)

Publisher: Society for Applied Spectroscopy

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Abstract:

Volatile compounds formed by oxidation of rapeseed oil at 60 °C in open beakers were studied as a function of time over 289 h. A direct inlet gas-phase FT-IR method was introduced and compounds indicating lipid oxidation were detected and quantified. The development of 1,3,5-trimethylbenzene, 2,4-hexadienal, 2-methyl-1,3-butadiene, 2-methyltetrahydrofuran, acetic acid, methyl cyclopentane, methyl hexanoate, n-butanal, n-hexanal, n-octanal, n-propanal, and trans,trans-2,4-heptadienal was followed. The results showed that gas-phase FT-IR is a potential method of fast analysis for monitoring oil quality. Headspace-gas chromatography-mass spectrometry (HS-GC-MS) was used for compound identification.

Keywords: FOURIER TRANSFORM INFRARED SPECTROSCOPY; FT-IR; VOLATILE; RAPESEED OIL; OXIDATION

Document Type: Research article

DOI: http://dx.doi.org/10.1366/0003702021954476

Publication date: 2002-02-01

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