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Research Article

Physicochemical Parameters and Heavy Metal Content in Soybean Oil from Bangladesh

Jewel Das, Dipankar Chakraborty, Suman Das, Sreebash Chandra Bhattacharjee and Prabhangshu Kumer Das
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Nine familiar brands of soybean oil were selected to assess the quality of oil using standard methods of analyses. All branded oil showed satisfactory results regarding physical parameters such as moisture content, specific gravity and viscosity. However deviation from standard requirements was observed for most of the chemical parameters. Comparatively low iodine value was noticed and the values varied from 110±3.0 to 114±2.2 g/100 g oil. Saponification value was found in the range of 200±2.9 to 210±1.6 mg KOH/g which was relatively high. Five branded oil out of nine had reasonably high acid value. Peroxide value was found in acceptable range (0.85-1.42 meq/kg oil) but the value was increased rapidly by 91.2% on an average during five months storage. Cholesterol was detected in all samples and the concentration ranged from 220±0.7 to 505±2.1 mg/100 g oil. Lead (Pb), nickel (Ni), cadmium (Cd) and copper (Cu) contents were determined in Crude Degummed Soybean oil (CDSO) and in 9 different brands of soybean oils using atomic absorption spectrophotometer (AAS) after wet digestion. The accumulation trend for soybean oil was in the following order Cu>Ni>Pb>Cd. The concentration of Pb, Ni and Cu in some brands was found to be higher than the recommended legal limits. However, the estimated intakes of Pb, Ni and Cu from daily consumption of 25 g of the investigated oils should cause no risk to human health.

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  How to cite this article:

Jewel Das, Dipankar Chakraborty, Suman Das, Sreebash Chandra Bhattacharjee and Prabhangshu Kumer Das, 2016. Physicochemical Parameters and Heavy Metal Content in Soybean Oil from Bangladesh. Pakistan Journal of Nutrition, 15: 565-571.

DOI: 10.3923/pjn.2016.565.571


1:  Ajayi, I.A., R.A. Oderinde, D.O. Kajogbola and J.I. Uponi, 2006. Oil content and fatty acid composition of some underutilized legumes from Nigeria. Food Chem., 99: 115-120.
CrossRef  |  Direct Link  |  

2:  Alam, A.K.M.F., 2014. Palm oil: The highest consumed edible oil in Bangladesh.

3:  Alimentarius, C., 1999. Codex standard for named vegetable oils (CODEX-STAN 210 - 1999).

4:  Aluyor, E.O. and M. Ori-Jesu, 2008. The use of antioxidants in vegetable oils-A review. Afr. J. Biotechnol., 7: 4836-4842.
Direct Link  |  

5:  Anthemidis, A.N., V. Arvanitidis and J.A. Stratis, 2005. On-line emulsion formation and multi-element analysis of edible oils by inductively coupled plasma atomic emission spectrometry. Analytica Chimica Acta, 537: 271-278.
CrossRef  |  Direct Link  |  

6:  BS., 1979. Specification for soyabean oil, BDS 909:1979. Bangladesh Standards and Testing Institution (BSTI), Dhaka, Bangladesh.

7:  Bera, D., D. Lahiri and A. Nag, 2006. Studies on a natural antioxidant for stabilization of edible oil and comparison with synthetic antioxidants. J. Food Eng., 74: 542-545.
CrossRef  |  Direct Link  |  

8:  Buldini, P.L., D. Ferri and J.L. Sharma, 1997. Determination of some inorganic species in edible vegetable oils and fats by ion chromatography. J. Chromatogr. A, 789: 549-555.
CrossRef  |  Direct Link  |  

9:  Choe, E. and D.B. Min, 2006. Mechanisms and factors for edible oil oxidation. Comprehen. Rev. Food Sci. Food Saf., 5: 169-186.
CrossRef  |  Direct Link  |  

10:  Chowdhury, K., L.A. Banu, S. Khan and A. Latif, 2007. Studies on the fatty acid composition of edible oil. Bangladesh J. Sci. Ind. Res., 42: 311-316.
CrossRef  |  Direct Link  |  

11:  Christie, W.W., 2014. Sterols 1. Cholesterol and cholesterol esters: Structure, occurrence, biochemistry and analysis.

12:  FAO., 2001. Codex Alimentarius: Fats, Oils and Related Products, Volume 8. Food and Agriculture Organization, Rome, Italy, ISBN-13: 9789251046821, Pages: 81.

13:  Daun, J.K., N.A.M. Eskin and D. Hickling, 2011. Canola: Chemistry, Production, Processing and Utilization. Elsevier, BV., Australia, USA., ISBN-13: 9780128043486, Pages: 432.

14:  Deman, J.M., 1990. Principles of Food Chemistry. Van Nostrand Reinhold, New York, USA.

15:  Dugo, G., L. La Pera, G.L. La Torre and D. Giuffrida, 2004. Determination of Cd(II), Cu(II), Pb(II) and Zn(II) content in commercial vegetable oils using derivative potentiometric stripping analysis. Food Chem., 87: 639-645.
CrossRef  |  Direct Link  |  

16:  Ekwu, F.C. and A. Nwagu, 2004. Effect of processing on the quality of cashew nut oils. J. Sci. Agric. Food Technol. Environ., 4: 105-110.

17:  FAO., 2003. Food energy-methods of analysis and conversion factors. Food and Nutrition Paper 77, Food and Agriculture Organization of the United Nations, Rome, Italy, pp: 1-93.

18:  FAO/WHO., 1999. Expert committee on food additives, summary and conclusions. Proceedings of the 53rd Joint FAO/WHO Expert Committee on Food Additives Meeting, June 1-10, 1999, Rome, Italy -.

19:  FAO/WHO., 2011. Joint FAO/WHO food standards programme codex committee on contaminants in foods. 5th Session, The Hague Netherlands, 21-25 March, 2011,

20:  FAS/USDA., 2015. Oilseeds: World markets and trade. Foreign Agricultural Service/USDA Office of Global Analysis, April 2015.

21:  Garrido, M.D., I. Frias, C. Diaz and A. Hardisson, 1994. Concentrations of metals in vegetable edible oils. Food Chem., 50: 237-243.
CrossRef  |  Direct Link  |  

22:  Gupta, M.K., 2008. Practical Guide to Vegetable Oil Processing. AOCS Press, Urbana, Ohio, ISBN-13: 978-1-893997-90-5, Pages: 510.

23:  Hilditch, T.P., 1949. The Industrial Chemistry of the Fats and Waxes. 3rd Edn., Bailliere, Tindall and Cox, London, UK., Pages: 604.

24:  Hui, Y.H., 1996. Bailey's Industrial Oil and Fat Products, Edible Oil and Fat Products: Processing Technology. Willey, New York, ISBN: 9780471594284, Pages: 708.

25:  Ikem, A. and N.O. Egibor, 2005. Assessment of trace elements in canned fishes (mackerel, tuna, salmon, sardines and herrings) marketed in Georgia and Alabama (United States of America). J. Food Compos. Anal., 18: 771-787.
CrossRef  |  Direct Link  |  

26:  Islam, M.S., M.T.H. Molla, M.T. Alam and M.R. Habib, 2008. Physico-chemical behaviour of the fish lipid from Lepidocephalus guntea (Hamilton) and variation of lipid profile with size. Pak. J. Biol. Sci., 11: 1342-1347.
CrossRef  |  PubMed  |  Direct Link  |  

27:  IUPAC., 1979. International Union of Pure and Applied Chemistry. Standard Methods for the Analysis of Oils, Fats and Derivatives. 6th Edn., Pergamon Press, Oxford.

28:  Jamali, M.K., T.G. Kazi, M.B. Arain, H.I. Afridi, N. Jalbani, R.A. Sarfraz and J.A. Baig, 2008. A multivariate study: Variation in uptake of trace and toxic elements by various varieties of Sorghum bicolor L. J. Hazard. Mater., 158: 644-651.
CrossRef  |  PubMed  |  Direct Link  |  

29:  Jamieson, G.S., 1943. Vegetable Fats and Oils, Their Chemistry, Production and Utilization for Edible, Medicinal and Technical Purposes. Reinhold Publishing Corp., New York., USA.

30:  Johnson, C. and P. Greenland, 1990. Effects of exercise, dietary cholesterol and dietary fat on blood lipids. Arch. Internal Med., 150: 137-141.
CrossRef  |  Direct Link  |  

31:  Jung, M.Y., S.H. Yoon and D.B. Min, 1989. Effects of processing steps on the contents of minor compounds and oxidation of soybean oil. J. Am. Oil Chem. Soc., 66: 118-120.
CrossRef  |  Direct Link  |  

32:  Katan, M.B., S.M. Grundy, P. Jones, M. Law, T. Miettinen and R. Paoletti, 2003. Efficacy and safety of plant stanols and sterols in the management of blood cholesterol levels. Mayo Clinic Proc., 78: 965-978.
CrossRef  |  PubMed  |  Direct Link  |  

33:  Kenny, A.P., 1952. The determination of cholesterol by the Liebermann-Burchard reaction. Biochem. J., 52: 611-619.
Direct Link  |  

34:  Kirk, R.E. and D.F. Othmer, 2008. Kirk-Othmer Food and Feed Technology: 2 Volume Set, Volume 2. Wiley-Interscience, New York, USA., Pages: 863.

35:  Kowalewska, Z., B. Izgi, S. Saracoglu and S. Gucer, 2005. Application of liquid-liquid extraction and adsorption on activated carbon to the determination of different forms of metals present in edible oils. Chemia Analityczna, 50: 1007-1012.
Direct Link  |  

36:  Lehninger, A.L., D.L. Nelson and M.M. Cox, 2005. Lehninger Principles of Biochemistry. 4th Edn., Vol. 1, W.H. Freeman Publishers, New York, USA., ISBN-13: 9780716743392, Pages: 1119.

37:  Noureddini, H., B.C. Teoh and L.D. Clements, 1992. Viscosities of vegetable oils and fatty acids. J. Am. Oil Chem. Soc., 69: 1189-1191.
CrossRef  |  Direct Link  |  

38:  O'Brien, R.D., 2004. Fats and Oils: Formulating and Processing for Applications. 2nd Edn., CRC Press, Boca Raton, FL.

39:  Okpuzor, J., V.I. Okochi, H.A. Ogbunugafor, S. Ogbonnia, T. Fagbayi and C. Obidiegwu, 2009. Estimation of cholesterol level in different brands of vegetable oils. Pak. J. Nutr., 8: 57-62.
CrossRef  |  Direct Link  |  

40:  Pehlivan, E., G. Arslan, F. Gode, T. Altun and M.M. Ozcan, 2008. Determination of some inorganic metals in edible vegetable oils by Inductively Coupled Plasma Atomic Emission Spectroscopy (ICP-AES). Grasas Aceites, 59: 239-244.
CrossRef  |  Direct Link  |  

41:  Perkins, E.G., 1992. Effect of Lipid Oxidation on Oil and Food Quality in Deep Frying. ACS Publications, USA.

42:  Plat, J. and R.P. Mensink, 2001. Effects of plant sterols and stanols on lipid metabolism and cardiovascular risk. Nutr. Metab. Cardiovasc. Dis., 11: 31-40.
PubMed  |  

43:  Sabir, S.M., I. Hayat and S.D.A. Gardezi, 2003. Estimation of sterols in edible fats and oils. Pak. J. Nutr., 2: 178-181.
CrossRef  |  Direct Link  |  

44:  Shahidi, F., 2005. Bailey's Industrial Oil and Fat Products. 6th Edn., John Wiley and Sons, Hoboken, New Jersey, ISBN-13: 978-0471384601, Pages: 3616.

45:  Toivo, J., V. Piironen, P. Kalo and P. Varo, 1998. Gas chromatographic determination of major sterols in edible oils and fats using solid-phase extraction in sample preparation. Chromatographia, 48: 745-750.
CrossRef  |  Direct Link  |  

46:  Wong, N.C., 2001. The beneficial effects of plant sterols on serum cholesterol. Can. J. Cardiol., 17: 715-721.
PubMed  |  Direct Link  |  

47:  WHO., 1994. Quality Directive of Potable Water. 2nd Edn., WHO, Geneva.

48:  Zahir, E., R. Saeed, M.A. Hameed and A.Yousuf, 2014. Study of physicochemical properties of edible oil and evaluation of frying oil quality by Fourier Transform-Infrared (FT-IR) Spectroscopy. Arabian J. Chem. 10.1016/j.arabjc.2014.05.025

49:  Zeiner, M., I. Steffan and I.J. Cindric, 2005. Determination of trace elements in olive oil by ICP-AES and ETA-AAS: A pilot study on the geographical characterization. Microchem. J., 81: 171-176.
CrossRef  |  Direct Link  |  

50:  Zhu, F., W. Fan, X. Wang, L. Qu and S. Yao, 2011. Health risk assessment of eight heavy metals in nine varieties of edible vegetable oils consumed in China. Food Chem. Toxicol., 49: 3081-3085.
CrossRef  |  Direct Link  |  

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