alexa A fourier transform infrared spectroscopic method for determining butylated hydroxytoluene in palm olein and palm oil


Journal of Food & Industrial Microbiology

Author(s): W Ammawath, Y B Che Man, R B Abdul Rahman, B S Baharin

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A simple, rapid, and direct FTIR spectroscopic method was developed for the determination of BHT content in refined, bleached, and deodorized (RBD) palm olein and RBD palm oil. The method used sodium chloride windows with a 50-mm transmission path. Fifty stripped oil samples of both RBD palm olein and RBD palm oil were spiked with known amounts of BHT concentrations up to 300 mg/kg (ppm). The data were separated into two sets for calibration and validation using partial least squares models. FTIR results for both oils correlated well with results obtained by the IUPAC HPLC-based method. For RBD palm olein, the coefficient of determination (R2) was 0.9907 and the SE of calibration (SEC) was 8.47 ppm. For RBD palm oil, an R2 of 0.9848 and an SEC of 10.73 ppm were achieved. Because of the significant decrease in analysis time and reduction in solvent usage, this FTIR method for BHT is especially well suited for routine quality control applications in the palm oil industry.

This article was published in Journal of the American Oil Chemists' Society and referenced in Journal of Food & Industrial Microbiology

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