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Fatty Acid Composition, Oxidative Stability, and Radical Scavenging Activity of Vegetable Oil Blends with Coconut Oil

Journal of the American Oil Chemists' Society

Abstract

Coconut (Cocos nucifera) contains 55–65% oil, having C12:0 as the major fatty acid. Coconut oil has >90% saturates and is deficient in monounsaturates (6%), polyunsaturates (1%), and total tocopherols (29 mg/kg). However, coconut oil contains medium chain fatty acids (58%), which are easily absorbed into the body. Therefore, blends of coconut oil (20–80% incorporation of coconut oil) with other vegetable oils (i.e. palm, rice bran, sesame, mustard, sunflower, groundnut, safflower, and soybean) were prepared. Consequently, seven blends prepared for coconut oil consumers contained improved amounts of monounsaturates (8–36%, p < 0.03), polyunsaturates (4–35%, p < 0.03), total tocopherols (111–582 mg/kg, p < 0.02), and 5–33% (p < 0.02) of DPPH (2,2-diphenyl-1-picrylhydrazyl free radicals) scavenging activity. In addition, seven blends prepared for non-coconut oil consumers contained 11–13% of medium chain fatty acids. Coconut oil + sunflower oil and coconut oil + rice bran oil blends also exhibited 36.7–89.7% (p < 0.0005) and 66.4–80.5% (p < 0.0313) reductions in peroxide formation in comparison to the individual sunflower oil and rice bran oil, respectively. It was concluded that blending coconut oil with other vegetable oils provides medium chain fatty acids and oxidative stability to the blends, while coconut oil will be enriched with polyunsaturates, monounsaturates, natural antioxidants, and a greater radical scavenging activity.

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References

  1. Enig MG, Atal S, Sampugna J, Keeney M (1990) Isomeric trans fatty acids in the US diet. J Am Coll Nutr 9:471–486

    CAS  Google Scholar 

  2. Kiyasu JY, Bloom B, Chaikoff IL (1952) The portal transport of absorbed fatty acids. J Biol Chem 199:415–419

    CAS  Google Scholar 

  3. St-Onge MP, Ross R, Parsons WD, Jones PJ (2003) Medium-chain triglycerides increase energy expenditure and decrease adiposity in overweight men. Obes Res 11:395–402

    Article  CAS  Google Scholar 

  4. Enig MG (1998) Lauric oils as antimicrobial agents: theory of effect, scientific rationale, and dietary applications as adjunct nutritional support for HIV-infected individuals. In: Watson RR (ed) Nutrients and foods in AIDS. CRC Press, Boca Raton, pp 81–97

    Google Scholar 

  5. Enig MG (1993) Diet, serum cholesterol and coronary heart disease. In: Mann GV (ed) Coronary heart disease: the dietary sense and nonsense. Janus Publishing, London, pp 36–60

    Google Scholar 

  6. Firestone D (ed) (1998) Method no: Ce1-62. Official methods and recommended practices of the American Oil Chemists Society, 5th edn, AOCS press, USA

  7. Firestone D (ed) (1997) Method no: Cd 8-53. Official methods and recommended practices of the American Oil Chemists Society, 5th edn, AOCS press, USA

  8. Paquot C, Havtfenne A (eds) (1987) IUPAC method no. 2.301. Standard methods for analysis of oils, fats and derivatives. International Union of Pure and Applied Chemistry, 7th edn. Blackwell, Oxford, pp 174–182

  9. Gopala Krishna AG, Hemakumar KH, Khatoon Sakina (2006) Study on the composition of rice bran oil and its higher free fatty acids value. J Am Oil Chem Soc 83:117–120

    Article  Google Scholar 

  10. Kamal-Eldin A, Appelqvist LA (1994) Variations in the composition of sterols, tocopherols and lignans in seed oils from four Sesamum species. J Am Oil Chem Soc 71:149–156

    Article  CAS  Google Scholar 

  11. Ramadan MF, Kroh LW, Morsel JT (2003) RSA of black cumin (Nigella sativa L.), coriander (Coriandrum sativum L.) and niger (Guizotia abyssinica Cass.) crude seed oils and oil fractions. J Agric Food Chem 51:6961–6969

    Article  CAS  Google Scholar 

  12. GraphPad Instat Demo: [DATASET1.ISD]. http://www.graphpad.com, GraphPad Software Inc., USA

  13. Seetharamaiah GS, Chandrashekara N (1988) Hypocholesterolemic activity of oryzanol in rats. Nutr Reports Intern 38:927–935

    CAS  Google Scholar 

  14. Seetharamaiah GS, Chandrashekara N (1989) Studies on hypocholesterolemic activity of rice bran oil. Atherosclerosis 78:219–223

    Article  CAS  Google Scholar 

  15. Namiki M (2007) Nutraceutical functions of sesame: a review. Crit Revs Food Sci Nutr 47:651–673

    Article  CAS  Google Scholar 

  16. Wahida Karmally RD (2005) Balancing unsaturated fatty acids: what’s the evidence for cholesterol lowering. J Am Diet Assoc 105:1068–1070

    Article  Google Scholar 

  17. Ruppin DC, Middleton WRJ (1980) Clinical use of medium chain triglycerides. Drugs 20:216–224

    Article  CAS  Google Scholar 

  18. Kabara JJ (1975) Fatty acids and derivatives as antimicrobial agents. US patent No. 4002775, 21 May 1975

  19. Bourque C, St-Onge MP, Papamandjaris AA, Cohn JS, Jones PJ (2003) Consumption of an oil composed of medium chain triacyglycerols, phytosterols, and N-3 fatty acids improves cardiovascular risk profile in overweight women. Metabolism 52:771–777

    Article  CAS  Google Scholar 

  20. Chu Yan-Hwa, Kung Yu-Lang (1998) A study on vegetable oil blends. Food Chem 62:191–195

    Article  CAS  Google Scholar 

  21. Frankel EN, Huang SW (1994) Improving the oxidative stability of polyunsaturated vegetable oils by blending with high-oleic sunflower oil. J Am Oil Chem Soc 71:255–259

    Article  CAS  Google Scholar 

Download references

Acknowledgments

Authors are thankful to Dr. V. Prakash, Director, CFTRI, Mysore, for providing infrastructural facilities, Coconut Development Board, Kochi, for funding the project and Dr. B.R. Lokesh, Head, LSTF Dept., for useful discussions on nutritional aspects of coconut oil.

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Correspondence to A. G. Gopala Krishna.

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Bhatnagar, A.S., Prasanth Kumar, P.K., Hemavathy, J. et al. Fatty Acid Composition, Oxidative Stability, and Radical Scavenging Activity of Vegetable Oil Blends with Coconut Oil. J Am Oil Chem Soc 86, 991–999 (2009). https://doi.org/10.1007/s11746-009-1435-y

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  • DOI: https://doi.org/10.1007/s11746-009-1435-y

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