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The use of FTIR spectroscopy in combination with chemometrics for the authentication of red fruit (Pandanus conoideus Lam) oil from sunflower and palm oils

Paper ID Volume ID Publish Year Pages File Format Full-Text
19747 43124 2014 7 PDF Available
Title
The use of FTIR spectroscopy in combination with chemometrics for the authentication of red fruit (Pandanus conoideus Lam) oil from sunflower and palm oils
Abstract

In this study, Fourier transform infrared (FTIR) spectroscopy in combination with multivariate calibration based on partial least squares (PLS) has been developed for quantitative analysis of sunflower oil (SFO) and palm oil (PO) as oil adulterants in red fruit oil (RFO) for the authentication study. The binary mixtures of SFO and PO in RFO were infrared spectroscopically scanned using horizontal attenuated total reflectance at mid infrared region (4000–650 cm−1). Some frequency regions where the variations were observed among RFO, SFO, and PO were optimized in order to seek the best frequency regions giving the best PLS calibration models. Besides, the derivatization of FTIR spectra (fisrt and second derivatives) was also investigated in order to look the types of FTIR spectra giving the best spectral performance in the model. The results showed that SFO was better determined using FTIR normal spectra at the frequency region of 1200–1000 cm−1 with coefficient of determination (R2) of >0.99 and with root mean square error of calibration (RMSEC) of 1.42% v/v. FTIR normal spectra were also more preferred than its derivative for the quantification of PO in RFO. The R2 value obtained for the relationship between actual value (reference value) and predicted value obtained during PLS modeling is very high (0.9991) with the low level of error (RMSEC of 0.98% v/v). It can be concluded that FTIR in combination with PLS is a reliable method for quantitative analysis of SFO and PO as adulterant in RFO for authenticity verification.

Keywords
Red fruit oil; Sunflower oil; Palm oil; FTIR spectroscopy; Partial least squares
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The use of FTIR spectroscopy in combination with chemometrics for the authentication of red fruit (Pandanus conoideus Lam) oil from sunflower and palm oils
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Publisher
Database: Elsevier - ScienceDirect
Journal: Food Bioscience - Volume 7, September 2014, Pages 64–70
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us