Nizam, A. F. A. and Azri, M. E. M. and Mior Ahmad Khushairi, Mohd Zahari and Mohd Sabri, Mahmud (2020) Application of infrared spectroscopic analysis for quantification of free fatty acid content at palm oil mills. In: IOP Conference Series: Materials Science and Engineering; 5th International Conference of Chemical Engineering and Industrial Biotechnology, ICCEIB 2020 , 9 - 11 August 2020 , Kuala Lumpur, Malaysia. pp. 1-10., 991 (1). ISSN 1757-8981 (Print), 1757-899X (Online)
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Abstract
High free fatty acid (FFA) content results in low palm oil yield in refinery and 5 wt% are the limit for crude palm oil acceptance. Common method of the FFA quantification in the mills is titration. The intent of this study was to determine the FFA content in extracted palm oil by using Fourier transform infrared (FTIR) spectroscopy coupled with AOCS titration method for verification. The oil extractions took place on days 1, 5, 8, 12 and 15. The fruitlets were initially washed and autoclaved. By separating the kernel, the mesocarp was heated and pressed. After centrifugation, the oil from the top layer of extract was further analyzed. In this study, % transmittance of FFA had been measured at carboxyl band, C=O between 1730 and 1700 cm−1. The stretch of carboxyl band denotes that the FFA had proportionally increased with time. The FFA content of the samples increased in sigmoidal pattern with critical rise after day 8, reaching 15 wt% equilibrium states after 15 days. A calibration model was developed via linear regression and R2 of 0.979 indicating the results were significant.
| Item Type: | Conference or Workshop Item (Lecture) |
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| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | High free fatty acid (FFA); Palm oil; Fourier transform infrared (FTIR); Linear regression |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Institute of Postgraduate Studies College of Engineering Faculty of Chemical and Process Engineering Technology |
| Depositing User: | Mrs Norsaini Abdul Samat |
| Date Deposited: | 26 Jul 2021 13:56 |
| Last Modified: | 26 Jul 2021 13:56 |
| URI: | http://umpir.ump.edu.my/id/eprint/30909 |
| Download Statistic: | View Download Statistics |
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