Studies on the trans-fatty acids and the stability of the fats present in Indian bakery products

Authors

  • Dr. Nasirullah Department of Lipid Science and Traditional Foods CSIR-Central Food Technological Research Institute
  • S. R.J. Marry Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute
  • R. Shariff Food Safety and Analytical Quality Control Laboratory, CSIR-Central Food Technological Research Institute

DOI:

https://doi.org/10.3989/gya.058812

Keywords:

Baked products, Shortening, Thermoxidation, Trans-fats

Abstract


Fat is one of the most important ingredients in baked products which is highly susceptible to heat and moisture. Therefore, this study has been conducted to assess the thermoxidative changes occurring in the fat as well as the extent to which trans-fatty acids are present. Fats were extracted from products like rusk, white bread, sweet bun, dilkhush, pizza, plain cake, vegetable roll, gluco-biscuits and wafers. These fats and control shortening samples were taken for study. The totox value was found to be high (4.0-30.9) whereas the free fatty acid, peroxide and anisidine values were, 0.31-0.90%, 1.2-11.0 and 11.6-8.9 respectively. Since the products are baked at 180 to 200 °C polar components were determined to be between 3.3 to 5.3% showing a moderate hydrolysis and oxidative changes. Iodine value (51.0 to 73.3) and the Butyro-refractometer reading (42.2 to 55.8) showed moderate unsaturation and all the samples melted below 37 °C. Trans-fatty acid ranged from 35.5 to 46.2% as has also been confirmed by FT-IR. The products selected were considered safe but nutritionally inferior to products prepared with liquid shortenings.

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References

AOAC 2005. Official methods of analysis. 18th edn. Association of Official Analytical Chemists, Maryland, USA. Methods 41.1.14, 920.159, P 7 FAME: 41.1.28, 969.33 ,P 19, 41.1.34, 982.27 P 30.

AOCS 2002-2003. Official methods and recommended practices of the American Oil Chemists Society, 5th edn. Champaign IL: AOCS press, Method No. Bc 3-49 (97), Ca 5a-40 (97), Cd 8-53 (97), Cd 18-90 (97) Cd 1-25 (93), Cc 7-25 (02), Cc 3b-92 (02) and Ca 2c-25 (97).

Ascherio A, Willet WC. 1997. Health effects of trans-fatty acids. Am. J. Clin. Nutrit. 66 1006s-1010s.

Baby Latha R, Nasirullah. 2011. Physico-chemical changes in rice-bran oil during heating at frying temperature, J. Food. Sci. Technol. DOI 10. 1007/s 13197-011-0495-9.

Barrera-Arellano D, Márquez-Ruiz G, Dobarganes MC. 1997. A simple procedure to evaluate the performance of fats and oils at frying temperatures. Grasas Aceites. 48, 231-235. http://dx.doi.org/10.3989/gya.1997.v48.i4.794

Dijkstra AJ, Hamilton RJ, Hamm W. 2008. Trans fatty acids, Blackwell Publishing Ltd. Iowa, USA, pp. 106. Duncan DB, 1995. Multiple ranges tests and multiple F test. Biometrics 11 1-42.

Kromhout D, Menotti A, Bloemberg B, 1995. Dietary saturated and trans fatty acids and cholesterol and 25-year mortality from coronary artery disease: the seven countries study. Preview Medical 24 308-315. http://dx.doi.org/10.1006/pmed.1995.1049 PMid:7644455

Manfred H, Herbert M, Bernd Z 2008. Spectroscopic methods in organic chemistry, 2nd Edn. Theime, New York pp. 33-73.

Patterson, HBW. 1983. Hydrogenation of fats and oils. Applied Science Publishers, New York.

Sikorski ZE, Kolakowaska A, 2003. Chemical and functional properties of food lipids, CRC press, London. pp. 205 to 220.

Valenzuela A, King J, Nieto S. 1995. Trans fatty acid isomers from hydrogenated fats: The controversy about health implications. Grasas Aceites 46, 369-375. http://dx.doi.org/10.3989/gya.1995.v46.i6.955

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Published

2013-03-30

How to Cite

1.
Nasirullah D, Marry SR, Shariff R. Studies on the trans-fatty acids and the stability of the fats present in Indian bakery products. grasasaceites [Internet]. 2013Mar.30 [cited 2022Dec.1];64(1):36-40. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/1405

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Research