MSA  Vol.11 No.10 , October 2020
A Study of Degradation in Vegetable Oils by Exposure to Sunlight Using Fourier Transform Infrared Spectroscopy
Abstract: There are a diversity and variability of oil producing plants and different extraction methods. These vegetable and essential oils are substances stored and released by plants from their fruits, leaves, flowers, bark and stem, being complete of plant origin that provides some benefits. In the plant these oils are also known as antioxidant substances, which have the function of natural protection. It is known that the extraction method has a strong influence on its quality and composition due to its variability and environmental conditions, besides possible adulteration. Oils that are rich in polyunsaturated fatty acids are the most relevant to the cosmetic industry but are most sensitive to oxidation. The oxidation of these oils generates what is known as rancidity, with the presence of smaller and undesirable molecules, thus reducing the quality of the oil beyond its nutritional value, making them harmful to human health. Stocking conditions, such as exposure to sunlight and heat, are major phenomena that accelerate the degradation of these oils. Infrared spectrometry with Fourier transform (FTIR) is a tool with potential to evaluate the degradation effect of vegetable oils. Infrared spectra of Almond (Prunus dulcis), Andiroba (Carapa guianensis aubl.), Copaíba (Copaifera langsdorffi) and Rosehip (Rosa aff. Rubiginosa) oils before and after exposure to sun light for 90 days were analyzed, with objective of evaluating the effect of the degradation on the composition of the oil, which were acquired in local commerce of the city Porto Velho. The spectra trends show the occurrence of oxidation, with the reduction of unsaturation, in addition to the fractionation of carbon chains and appearance of functional groups such as aldehyde and alcohol.
Cite this paper: de Souza, T. , Olenka, L. and Peternella, W. (2020) A Study of Degradation in Vegetable Oils by Exposure to Sunlight Using Fourier Transform Infrared Spectroscopy. Materials Sciences and Applications, 11, 678-691. doi: 10.4236/msa.2020.1110046.

[1]   Farias, E.A., Leles, M.I.G., Ionashiro, M., Suppa, T.O. and Antoniosi Filho, N.R. (2002) Study of the Thermal Stability of Oil and Vegetable Fats by TG/DTG and DTA. Eclectic Chemistry, 27, 111-119.

[2]   Pereira, W.A. (2012) Multivariate Calibration of Vegetable Oil Mixtures Using Medium Infrared Spectroscopy. Master Dissertation, Agricultural Sciences Course, Paraíba State University, Joao Pessoa.

[3]   Silva, A.R. (2004) Aromatherapy in Dermatology and Aesthetics. Roca, Sao Paulo.

[4]   Allinger, N.L., Cava, M.P., Johnson, C.R., Lebel, N.A. and Stevens, C.L. (2009) Organic Chemistry. 2nd Edition, LTC, Rio de Janeiro.

[5]   Rampazzo, V. (2015) Evaluation of Termal Degadation of Vegetable Oils by Thermogravimetry, Gas Chromatography and Médium Infrared Spectroscopy. Master Dissertation, Food Engineering Course, Federal University of Paraná, Curitiba.

[6]   Silva, L.R. (2018) Physico-Chemical Properties and Fatty Acid Profile of Andiroba Oil. Native Agricultural and Environmental Research, 6, 147-152.

[7]   Silva, A.E.S. (2012) Identification and Quantification with Chromatographic Techniques of Fatty Acids with Pharmacological Potential in Amazonian Fruits. Master Dissertation, Nuclear Technology Course, IPEN, Sao Paulo.

[8]   Askin, M.A., Balta, M.F., Tekintas, F.E., Kazankaya, A. and Balta, F. (2007) Fatty Acid Composition Affected by Kernel Weightin Almond [Prunus dulcis (Mill.) D.A. Webb.] Genetic Resources. Journal of Food Composition and Analysis, 20, 7-12.

[9]   Santos, J.S., Duarte Vieira, A.B. and Kamada, I. (2009) The Rosehip in the Treatment of Open Wounds: A Review. Revista Brasileira de Enfermagem, 62, 457-462.

[10]   Ferrari, M., Oliveira, M.S.C., Nakano, A.K. and Rocha-Filho, P.A. (2007) Determination of the Sun Protection Factor (SPF) in Vitro and in Vivo of Emulsions with Andiroba Oil (Carapa guianensis). Brazilian Journal of Pharmacognosy, Sao Paulo, 17, 626-630.

[11]   Ferreira, L.S. (2018) Irrigation Déficit in Almod (Prunus dulcis L.): Different Physiological Strategies to Assess the Cultures’s Hydric State. Doctorate Thesis, Plant Production Course, State University of Northern Fluminense Darcy Ribeiro, Rio de Janeiro.

[12]   Souza, E.C. (2007) Study of the Oxidation of Soybean Oil with Different Concentrations of Anti-Oxidant Additives, for Use in Heat Quenching Treatments. Master Dissertation, Materials Engineering Course, University of Sao Paulo, Sao Paulo.

[13]   Schneider, R.C.S. (2002) Extraction, Characterization and Transformation of Castle Oil. Doctorate Thesis, Chemistry Course, Federal University of Rio Grande do Sul, Porto Alegre.

[14]   Nenadis, N., Tsikouras, I., Xenikakis, P. and Tsimidou, M.Z. (2013) Fourier Transform MID-Infrared Spectroscopy Evaluation of Early Stages of Virgin Olive Oil Autoxidation. European Journal of Lipid Science and Technology, 115, 526-534.

[15]   Ismail, A.A., Van de Voort, F.R. and Sedman, J. (1997) Fourier Transform Infrared Spectroscopy: Principles and Applications. Techniques and Instrumentation in Analytical Chemistry, 18, 93-139.

[16]   Uncu, O. and Ozen, B. (2015) Prediction of Various Chemical Parameters of Olive Oils with Fourier Transform Infrared Spectroscopy. Food Science and Technology, 63, 978-984.

[17]   Marina, A.M., Wan Rosli, W.I. and Noorhidayah, M. (2013) Quantitative Analysis of Peroxide Value in Virgin Coconut Oil by ATR-FTIR Spectroscopy. The Open Conference Proceedings Journal, 4, 53-56.

[18]   Jiang, X.M., Li, S., Xiang, G.Q., Li, Q.H., Fan, L., He, L.J. and Gu, K.R. (2016) Determination of the Acid Value of Edible Oils via FTIR Spectroscopy Based on the O-H Stretching Band. Food Chemistry, 212, 585-589.

[19]   Simoes, C.M., Schenkel, E.P., Gosmann, G., Mello, J.C.P., Mentz, L.A. and Petrovick, P.R. (2004) From the Plant to the Medicine. 5th Edition, UFSC/UFRGS Publisher, Pharmacognosy, Florianópolis/Porto Alegre.

[20]   Solomons, T.W.G. (2001) Organic Chemistry. 7th edition, Editora LTC, Rio de Janeiro.

[21]   Ramalho, V.C. and Jorge, N. (2006) Antioxidants Used in Oils, Fats and Fatty Foods. Química Nova, 29, 755-760.

[22]   Souza, A.M. and Poppi, R.J. (2012) Didactic Chemistry Experiment for Exploratory Analysis of Vegetable Oils Co-Edible by Middle Infrared Spectroscopy and Principal Component Analysis: A Tutorial, Part I. Química Nova, 35, 223-229.

[23]   Guill’en, M.D. and Cabo, N. (2002) Fourier Transform Infrared Spectra Data versus Peroxide and Anisidine Values to Determine Oxidative Stability of Edible Oils. Food Chemistry, 77, 503-510.

[24]   Srivastava, Y. and Semwal, A.D. (2015) A Study on Monitoring of Frying Performance and Oxidative Stability of Virgin Coconut Oil (VCO) during Continuous/Prolonged Deep Fat Frying Process Using Chemical and FTIR Spectroscopy. Journal of Food Science and Technology, 52, 984-991.

[25]   Silverstein, R.M., Webster, F.X. and Kiemle, D.J. (2006) Spectrometric Identification of Organic Compounds. 7th Edition, LTC, Rio de Janeiro.

[26]   Fennema, O.R. Damodaran, S. and Parkin, K.L. (2010) Food Chemistry. 4th Edition, Editora Artmed, Porto Alegre.

[27]   Smith, S.A., King, R.E. and Min, D.B. (2007) Oxidative and Thermal Stabilities of Genetically Modified High Oleic Sunflower Oil. Food Chemistry, 102, 1208-1213.

[28]   Vlachos, N., Skopelitis, Y., Psaroudaki, M., Konstantinidou, V., Chatzilazarou, A. and Tegou, E. (2006) Applications of Fourier Transform Infrared Spectroscopy to Edible Oils. Analytica Chimica Acta, 573, 459-465.

[29]   Rohman, A., Kuwat, T., Retno, S., Yuny, E. and Tridjoko, W. (2012) Fourier Transform Infrared Spectroscopy Applied for Rapid Analysis of Lard in Palm Oil. International Food Research Journal, 19, 1161-1165.

[30]   Shi, L., Liu, Z., Li, J. and Qin, Z. (2017) Analysis of Edible Vegetable Oils by Infrared Absorption Spectrometry. Advances in Engineering Research, 86, 286-289.

[31]   Nascimento Filho, W.B., Silva, H.E.B., Sousa, R.C.P. and Souza, O.S. (2019) FTIR Infrared Spectroscopy and X-Ray Diffractometry Applied to Monitor the Polymerization Process of Andiroba Oil. Revista Virtural Química, 11, 922-936.