Nur Aainaa Syahirah Ramli*, Mohd Azmil Mohd Noor, Fadzlina Abdullah
Quality and Environmental Assessment Unit, Advanced Oleochemical Technology Division, Malaysian Palm Oil Board (MPOB), 6, Persiaran
Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia.
*Corresponding author. Email: firstname.lastname@example.org
Received 4th May 2021 ; accepted 15nd November 2021
Available online 20th December 2021
ABSTRACT. Cooking oils are used for daily cooking as well as salad dressing, in processed food, and other various uses. The physico-chemical properties of cooking oils can affect the quality of foods and hence must be evaluated. The aim of the present study was to evaluate the physicochemical properties of palm-based cooking oils (refined, bleached and deodorized (RBD) palm olein). The analyses were conducted on a total of 20 different brands of cooking oil packed in plastic pouches, which were randomly chosen from a local market. The physico-chemical properties of the cooking oils investigated include moisture and impurities (MI), iodine value (IV), peroxide value (PV), slip melting point (SMP), Lovibond colour, and free fatty acid (FFA). The properties were compared with known standards for refined oils such as Malaysian Standard and Codex Alimentarius Standard. Analysis showed that MI, IV, and SMP of all brands were within the requirements set by Malaysian Standard for RBD palm olein. The PV, Lovibond colour, and FFA values of several brands deviated from the Malaysian Standard. Meanwhile, the PV and FFA of all brands of the cooking oil tested were within the value designated by the Codex Standards. The physico-chemical properties of RBD palm olein cooking oils tested in this study were of acceptable and good quality and are considered suitable for consumption. The quality of cooking oil should be regularly monitored to avoid the use of adulterated oil.
KEYWORDS. RBD palm olein, cooking oil, physico-chemical properties, plastic pouch packed
- Abdellah, A. M., & Ishag, K. E. N. A. (2012). Effect of storage packaging on sunflower oil oxidative stability. American Journal of Food Technology, 7(11), 700-707.
- Abdullah, F., Ismail, R., Ghazali, R., & Idris, Z. (2018). Total phenolic contents and antioxidant activity of palm oils and palm kernel oils at various refining processes. Journal of Oil Palm Research, 30(4), 682 – 692.
- Addinsoft. (2019). XLSTAT statistical and data analysis solution. In). Boston, USA: https://www.xlstat.com.
- Agbaire, P. O. (2012). Quality assessment of palm oil sold in some major markets in Delta State, southern Nigeria. African Journal of Food Science and Technology, 3(9), 223-226.
- Alimentarus, C. (1999). Codex Standard for Named Vegetable Oils. CODEX STAN 210-1999. Rome, Italy.
- American Oil Chemists’ Society, & Mehlenbacher, V. C. (2004). Official Methods and Recommended Practices of the AOCS: American Oil Chemists’ Society.
- Cao, G., Ruan, D., Chen, Z., Hong, Y., & Cai, Z. (2017). Recent developments and applications of mass spectrometry for the quality and safety assessment of cooking oil. TrAC Trends in Analytical Chemistry, 96, 201-211.
- Chigbogu, M. P., Jonathan, E. I., Onyenankeya, E. I., & Ikechukwu, O. S. (2015). Evaluation of the quality and level of adulteration of palm oil obtained from different locations in Enugu Metropolis, Nigeria. International Journal of Multidisciplinary Sciences and Engineering, 6(6), 23-26.
- Chong, C. L. (2012). 15 – Measurement and maintenance of palm oil quality. In Palm oil : production, processing, characterization, and uses, (pp. 431-470): AOCS Press.
- Department of Standards Malaysia. (2007). MS 816: Palm olein – specification (Second revision) (Vol. ICS: 67.200.10): Standards Malaysia.
- Endo, Y. (2018). Analytical methods to evaluate the quality of edible fats and oils: The JOCS standard methods for analysis of fats, oils and related materials (2013) and advanced methods. Journal of Oleo Science, 67(1), 1-10.
- Fuentes, P. H. A., do Prado, A. C. P., Ogliari, P., Deschamps, F. C., BarreraArellano, D., Bolini, H. M. A., & Block, J. M. (2013). Evaluation of physico-chemical and sensory quality during storage of soybean and canola oils packaged in PET bottles. Journal of the American Oil Chemists’ Society, 90(5), 619-629.
- Hassim, N. A. M., Ismail, N. H., Kanagaratnam, S., Isa, W. R. A., & Dian, N. L. H. M. (2021). Quality of commercial palm-based cooking oil packed in plastic pouch and polyethylene terephthalate (PET) bottle. Journal of Oil Palm Research, 33, 493-513.
- Hotchkiss, J. H. (1995). Overview on chemical interactions between food and packaging materials. In P. Ackermann, M. Jäerstad & T. Ohlsson (Eds.), Foods and packaging materials : chemical interactions, (pp. 3-11): Cambridge : Royal Society of Chemistry.
- Imran, M., & Nadeem, M. (2015). Triacylglycerol composition, physico-chemical characteristics and oxidative stability of interesterified canola oil and fully hydrogenated cottonseed oil blends. Lipids in Health and Disease, 14(1), 138-148.
- International Organization for Standardization, I. (1998). 662 – Animal and vegetable fats and oils – – Determination of moisture and volatile matter content. In, vol. 662). Switzerland.
- Kaleem, A., Aziz, S., Iqtedar, M., Abdullah, R., Aftab, M., Rashid, F., Shakoori, F. R., & Naz, S. (2015). Investigating changes and effect of peroxide values in cooking oils subject to light and heat. FUUAST Journal of Biology, 5(2), 191-196.
- Khor, Y. P., Sim, B. I., Abas, F., Lai, O. M., Wang, Y., Wang, Y., & Ping Tan, C. (2019). Quality profile determination of palm olein: potential markers for the detection of recycled cooking oils. International Journal of Food Properties, 22(1), 1172-1182.
- Kucuk, M., & Caner, C. (2005). Effect of packaging materials and storage conditions on sunflower oil quality. Journal of Food Lipids, 12(3), 222-231.
- Kuntom, A. (2005). MPOB Test Methods: A Compendium of Test[s] on Palm Oil Products, Palm Kernel Products, Fatty Acids, Food Related Products and Others: Malaysian Palm Oil Board, Ministry of Plantation Industries and Commodities Malaysia.
- Lin, S. W. (2002). Palm Oil. In F. D. Gunstone (Ed.), Vegetable oils in food technology: Composition, properties and uses, vol. 6 (pp. 59-97): Blackwell.
- Mehmood, T., Ahmad, A., Ahmed, A., & Khalid, N. (2012). Quality evaluation and safety assessment of different cooking oils available in Pakistan. Journal of The Chemical Society of Pakistan, 34(3), 518-525.
- Méndez, A. I., & Falqué, E. (2007). Effect of storage time and container type on the quality of extra-virgin olive oil. Food Control, 18(5), 521-529.
- Mengistie, T., Alemu, A., & Mekonnen, A. (2018). Comparison of physicochemical properties of edible vegetable oils commercially available in Bahir Dar, Ethiopia. Chemistry International, 4(2), 130-135.
- MPOB. (2009). Code of Practice for the Category of Palm Oil Dealers – Packing of Palm OleinBased Cooking Oil: Malaysian Palm Oil Board.
- Muneeshwari, P., Hemalatha, G., Kanchana, S., Pushpa, G., Mini, M. L., & Chidambaranathan, N. (2017). Physico chemical quality and stability of refined and virgin oils. International Journal of Pure & Applied Bioscience, 5(2), 1182-1191.
- Nangbes, J. G., Nvau, J. B., Buba, W. M., & Zukdimma, A. N. (2013). Extraction and characterization of castor (ricinus communis) seed oil. The International Journal Of Engineering And Science, 2(9), 105-109.
- Narasimhan, S., Rajalakshmi, D., Chand, N., Mahadeviah, B., & Indiramma, A. R. (2001). Palm oil quality in different packaging materials sensory and physicochemical parameters. Journal of the American Oil Chemists’ Society, 78(3), 257-265.
- O’Brien, R. D. (2004). 3 – Fats and oils analysis. In Fats and Oils: Formulating and Processing for Applications, Second Edition, (pp. 189 – 248): CRC Press.
- Okparanta, S., Daminabo, V., & Solomon, L. (2018). Assessment of rancidity and other physicochemical properties of edible oils (mustard and corn oils) stored at room temperature. Journal of Food and Nutrition Sciences, 6(3), 70 – 77.
- Piscopo, A., & Poiana, M. (2012). Packaging and storage of olive oil. In I. Muzzalupo (Ed.), Olive Germplasm, the Olive Cultivation, Table Olive and Olive Oil Industry in Italy, (pp. 217– 218). Hong Kong, China: In Tech.
- Ramli, N. A. S., Mohd Noor, M. A., Musa, H., & Ghazali, R. (2018). Stability evaluation of quality parameters for palm oil products at low temperature storage. Journal of the Science of Food and Agriculture, 98(9), 3351 – 3362.
- Robertson, G. L. (2012). Food Packaging: Principles and Practice, Third Edition: Taylor & Francis.
- Sun, H., Lu, L. X., Ge, C. F., & Tang, Y. L. (2015). Effect of packaging films on the quality of canola oil under photooxidation conditions. Mathematical Problems in Engineering, 2015, 6.
- Tesfaye, B., & Abebaw, A. (2016). Physico-chemical characteristics and level of some selected metal in edible oils. Advances in Chemistry, 2016, 1-7.
- Yee, T. P., Loganathan, R., & Tiu, T. K. (2018). Oxidative changes in repeatedly heated vegetable oils. Journal of Oil Palm Research, 30, 635 – 641.