Abstract
To develop a new and rapid qualitative and quantitative analysis of flaxseed oil adulteration with different vegetable oils, we investigated the dielectric spectroscopy coupled with multivariate methodology in the frequency range between 10 and 3000 MHz. Linear discriminant analysis was used to distinguish flaxseed oil from other adulterants based on dielectric spectra, and the oil samples were easily grouped in different clusters. The partial least square model was developed for the quantification of the sample adulteration percentage independent from the adulterating oil, which showed a good prediction capability for the adulterant concentrations. The calibration provided a correlation coefficient (R-value) of 0.9961, and the blind sample validation indicated that the R-value of the validation and precision analyses was close to 1. Analysis was characterized as having good precision by slightly low relative standard deviation. Thus, dielectric spectroscopy could be effectively used to discriminate adulterated flaxseed oil from different types of oils at 2% levels.
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References
Abdallah M, Vergara-Barberán M, Lerma-García MJ, Herrero-Martínez JM, Simó-Alfonso EF, Guerfel M (2016) Cultivar discrimination and prediction of mixtures of Tunisian extra virgin olive oils by FTIR. Eur J Lipid Sci Tech 118(8):1236–1242. https://doi.org/10.1002/ejlt.201500041
Agiomyrgianaki A, Petrakis PV, Dais P (2010) Detection of refined olive oil adulteration with refined hazelnut oil by employing NMR spectroscopy and multivariate statistical analysis. Talanta 80(5):2165–2171. https://doi.org/10.1016/j.talanta.2009.11.024
Akin G, Karuk Elmas ŞN, Arslan FN, Yılmaz İ, Kenar A (2019) Chemometric classification and quantification of cold pressed grape seed oil in blends with refined soybean oils using attenuated total reflectance–mid infrared (ATR–MIR) spectroscopy. LWT-Food Sci Tech 100:126–137. https://doi.org/10.1016/j.lwt.2018.10.046
Alfaifi B, Wang S, Tang J, Rasco B, Sablani S, Jiao Y (2013) Radio frequency disinfestation treatments for dried fruit: dielectric properties. LWT-Food Sci Tech 50(2):746–754. https://doi.org/10.1016/j.lwt.2012.07.012
Balvardi M, Mendiola JA, Castro-Gómez P, Fontecha J, Rezaei K, Ibáñez E (2015) Development of pressurized extraction processes for oil recovery from wild almond (Amygdalus scoparia). J Am Oil Chem Soc 92(10):1503–1511. https://doi.org/10.1007/s11746-015-2708-2
Cascant MM, Garrigues S, de la Guardia M (2017) Comparison of near and mid infrared spectroscopy as green analytical tools for the determination of total polar materials in fried oils. Microchem J 135:55–59. https://doi.org/10.1016/j.microc.2017.07.012
Chen J, Zhang L, Geng Q, Jing B, Yu X (2018) Determination of Total polar compounds in frying oils by PE-film-based FTIR and ATR-FTIR spectroscopy. Eur J Lipid Sci Tech 120:1800250. https://doi.org/10.1002/ejlt.201800250
Cunha SC, Oliveira M (2006) Discrimination of vegetable oils by triacylglycerols evaluation of profile using HPLC/ELSD. Food Chem 95(3):518–524. https://doi.org/10.1016/j.foodchem.2005.03.029
de Souza LM, de Santana FB, Gontijo LC, Mazivila SJ, Borges Neto W (2015) Quantification of adulterations in extra virgin flaxseed oil using MIR and PLS. Food Chem 182:35–40. https://doi.org/10.1016/j.foodchem.2015.02.081
Elzey B, Pollard D, Fakayode SO (2016) Determination of adulterated neem and flaxseed oil compositions by FTIR spectroscopy and multivariate regression analysis. Food Control 68:303–309. https://doi.org/10.1016/j.foodcont.2016.04.008
Goyal A, Sharma V, Upadhyay N, Gill S, Sihag M (2014) Flax and flaxseed oil: an ancient medicine & modern functional food. J Food Sci Tech 51(9):1633–1653. https://doi.org/10.1007/s13197-013-1247-9
Guo W, Liu Y, Zhu X, Wang S (2011) Temperature-dependent dielectric properties of honey associated with dielectric heating. J Food Eng 102(3):209–216. https://doi.org/10.1016/j.jfoodeng.2010.08.016
Hai Z, Wang J (2006) Detection of adulteration in camellia seed oil and sesame oil using an electronic nose. Eur J Lipid Sci Tech 108(2):116–124. https://doi.org/10.1002/ejlt.200501224
Hu L, Toyoda K, Ihara I (2008) Dielectric properties of edible oils and fatty acids as a function of frequency, temperature, moisture and composition. J Food Eng 88(2):151–158. https://doi.org/10.1016/j.jfoodeng.2007.12.035
Hu L, Toyoda K, Ihara I (2010) Discrimination of olive oil adulterated with vegetable oils using dielectric spectroscopy. J Food Eng 96(2):167–171. https://doi.org/10.1016/j.jfoodeng.2009.06.045
Khurram AA, ul-Haq I, Khan A, Hussain R, Gul IH (2017) Enhancement of dielectric constant of graphene–epoxy composite by inclusion of nanodiamond particles. J Electron Mater 47:1713–1720. https://doi.org/10.1007/s11664-017-5865-2
Kudra T, Raghavan V, Akyel C, Bosisio R, Voort F (2016) Electromagnetic properties of milk and its constituents at 2.45 GHz. J Micro Power Electromagn Energy 27(4):199–204. https://doi.org/10.1080/08327823.1992.11688191
Li Q, Yu X, Yang Y, Liu X (2017) Simple determination of diacylglycerols using thin layer chromatography and visible spectrophotometry. Food Anal Method 11(2):236–242. https://doi.org/10.1007/s12161-017-0993-0
Liu L, Yu X, Zhao Z, Xu L, Zhang R (2017) Efficient salt-aided aqueous extraction of bitter almond oil. J Sci Food Agric 97:3814–3821. https://doi.org/10.1002/jsfa.8245
Lucarini M, Durazzo A, Sanchez Del Pulgar J, Gabrielli P, Lombardi-Boccia G (2018) Determination of fatty acid content in meat and meat products: the FTIR-ATR approach. Food Chem 267:223–230. https://doi.org/10.1016/j.foodchem.2017.11.042
Manni A, El-Bayoumy K (2016) Do omega-3 fatty acids reduce the risk of breast cancer in postmenopausal obese women? Expert Rev Endocrinol Metab 11(5):365–367. https://doi.org/10.1080/17446651.2016.1220296
Mori TA (2014) Omega-3 fatty acids and cardiovascular disease: epidemiology and effects on cardiometabolic risk factors. Food Funct 5(9):2004–2019. https://doi.org/10.1039/c4fo00393d
Nunes AC, Bohigas X, Tejada J (2006) Dielectric study of milk for frequencies between 1 and 20GHz. J Food Eng 76(2):250–255. https://doi.org/10.1016/j.jfoodeng.2005.04.049
Pace WE, Westphal WB, Goldblith SA (1968) Dielectric properties of commercial cooking oils. J Food Sci 33(1):30–36. https://doi.org/10.1111/j.1365-2621.1968.tb00879.x
Rudan-Tasic D, Klofutar C (1999) Characteristics of vegetable oils of some slovene manufacturers. Acta Chim Slov 46:511–521
Shah ZH, Tahir QA (2011) Dielectric properties of vegetable oils. Pak J Sci Res 3:481–492. https://doi.org/10.3329/jsr.v3i3.7049
Shuai Q, Zhang L, Li P, Zhang Q, Wang X, Ding X et al (2014) Rapid adulteration detection for flaxseed oil using ion mobility spectrometry and chemometric methods. Anal Methods 6:9575–9580. https://doi.org/10.1039/c4ay02139h
Sosa-Morales ME, Valerio-Junco L, López-Malo A, García HS (2010) Dielectric properties of foods: reported data in the 21st century and their potential applications. LWT-Food Sci Tech 43(8):1169–1179. https://doi.org/10.1016/j.lwt.2010.03.017
Sun X, Zhang L, Li P, Xu B, Ma F, Zhang Q, Zhang W (2015) Fatty acid profiles based adulteration detection for flaxseed oil by gas chromatography mass spectrometry. LWT-Food Sci Tech 63(1):430–436. https://doi.org/10.1016/j.lwt.2015.02.023
Tanaka F, Morita K, Mallikarjunan P, Hung YC, Ezeike GOI (2005) Analysis of dielectric properties of soy sauce. J Food Eng 71(1):92–97. https://doi.org/10.1016/j.jfoodeng.2004.10.023
Venkatesh MS, Raghavan GSV (2004) An overview of microwave processing and dielectric properties of agri-food materials. Biosyst Eng 88(1):1–18. https://doi.org/10.1016/j.biosystemseng.2004.01.007
Wang M, Zhang XJ, Feng K, He C, Li P, Hu YJ, Su H, Wan JB (2016) Dietary alpha-linolenic acid-rich flaxseed oil prevents against alcoholic hepatic steatosis via ameliorating lipid homeostasis at adipose tissue-liver axis in mice. Sci Rep 6:26826. https://doi.org/10.1038/srep26826
Wang T, Wu HL, Long WJ, Hu Y, Cheng L, Chen AQ, Yu RQ (2019) Rapid identification and quantification of cheaper vegetable oil adulteration in camellia oil by using excitation-emission matrix fluorescence spectroscopy combined with chemometrics. Food Chem 293:348–357. https://doi.org/10.1016/j.foodchem.2019.04.109
Yang J, Zhao KS, He YJ (2016) Quality evaluation of frying oil deterioration by dielectric spectroscopy. J Food Eng 180:69–76. https://doi.org/10.1016/j.jfoodeng.2016.02.012
Zabaras D, Gordon MH (2004) Detection of pressed hazelnut oil in virgin olive oil by analysis of polar components: improvement and validation of the method. Food Chem 84(3):475–483. https://doi.org/10.1016/j.foodchem.2003.07.029
Zhang Q, Liu C, Sun Z, Hu X, Shen Q, Wu J (2012) Authentication of edible vegetable oils adulterated with used frying oil by Fourier transform infrared spectroscopy. Food Chem 132(3):1607–1613. https://doi.org/10.1016/j.foodchem.2011.11.129
Zhao H, Guo B, Wei Y, Zhang B (2013) Near infrared reflectance spectroscopy for determination of the geographical origin of wheat. Food Chem 138(2–3):1902–1907. https://doi.org/10.1016/j.foodchem.2012.11.037
Zhou X, Li R, Lyng JG, Wang SJ (2018) Dielectric properties of kiwifruit associated with a combined radio frequency vacuum and osmotic drying. J Food Eng 239:72–82. https://doi.org/10.1016/j.jfoodeng.2018.07.006
Zhu X, Guo W, Wang S (2014) Dielectric properties of ground hazelnuts at different frequencies, temperatures, and moisture contents. Trans ASABE 57(1):161–168. https://doi.org/10.13031/trans.57.10407
Zhu X, Fang L, Gu J, Guo W (2015) Feasibility investigation on determining soluble solids content of peaches using dielectric spectra. Food Anal Method 9(6):1789–1798. https://doi.org/10.1007/s12161-015-0348-7
Zou MQ, Zhang XF, Qi XH, Ma HL, Dong Y, Liu CW, Guo X, Wang H (2009) Rapid authentication of olive oil adulteration by Raman spectrometry. J Agric Food Chem 57(14):6001–6006. https://doi.org/10.1021/jf900217s
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Funding was provided by the National Natural Science Foundation of China (No. 31671819).
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Lingyan Zhang, Jia Chen, Bingyu Jing, Yaoyao Dong, Xiuzhu Yu declare that they have no conflict of interest.
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Zhang, L., Chen, J., Jing, B. et al. New Method for the Discrimination of Adulterated Flaxseed Oil Using Dielectric Spectroscopy. Food Anal. Methods 12, 2623–2629 (2019). https://doi.org/10.1007/s12161-019-01620-6
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DOI: https://doi.org/10.1007/s12161-019-01620-6