Multivarate calibration of fourier transform spectra in determining the malonaldehyde as a TBA reactive substance (TBARS) in palm olein

Mirghani, Mohamed Elwathig Saeed and Che Man, Yakoob and Selamat, Jinap and Baharin, B. S. and Bakar, Jamilah (2001) Multivarate calibration of fourier transform spectra in determining the malonaldehyde as a TBA reactive substance (TBARS) in palm olein. Journal Of The American Oil Chemists' Society, 78 (11). pp. 1127-1131. ISSN 0003-021X

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Abstract

Fourier transform infrared (FTIR) spectra of palm oil samples between 2900 and 2800 cm–1 and 1800 and 1600 cm–1 were used to compare different multivariate calibration techniques for quantitative determination of their thiobarbituric acid-reactive substance (TBARS) content. Fifty spectra (in duplicate) of palm oil with TBARS values between 0 and 0.25 were used to calibrate models based on partial least squares (PLS) and principal components regression (PCR) analyses with different baselines. The methods were compared for the number of factors, coefficients of determination (R2), and accuracy of estimation. The standard errors of prediction (SEP) were calculated to compare their predictive ability. The calibrated models generated three to eight factors, R2 of 0.9414 to 0.9803, standard error of estimation (SEE) of 0.0063 to 0.0680, and SEP of 1.20 to 6.67.

Item Type:	Article (Journal)
Additional Information:	4971/7868
Uncontrolled Keywords:	FTIR spectroscopy, palm oil, partial least squares (PLS), principal components regression (PCR), TBARS.
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	A Prof Elwathig Mirghani
Date Deposited:	08 May 2012 08:24
Last Modified:	08 May 2012 08:24
URI:	http://irep.iium.edu.my/id/eprint/7868

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