Determination of fatty acid profile of branded and unbranded processed foods commonly available in the Indian market with special reference to trans fatty acids
DETERMINATION OF FATTY ACID PROFILE OF BRANDED AND UNBRANDED PROCESSED FOODS
118 / 1
Keywords:
Branded and unbranded processed foods, Fatty acid composition, Trans fatty acidsAbstract
Adverse health effects from the consumption of trans fatty acids (TFA) have led to efforts to decrease the consumption of foods containing these lipids. There is a need for up to date information on TFA levels in foods to support decision-making by regulators on labelling and health claims. In this context, the present study provides detailed information about the fatty acid profile with special reference to TFA of selected branded and unbranded Indian processed foods. Products were analysed for fatty acid composition by using GC. Results showed that the amount of TFA, SFA, MUFA and PUFA varied considerably among the analyzed samples. Among the products analyzed, vanaspati showed highest fat content, chocos showed highest SFA content (82%), boondi showed highest UFA content (74%) and cake showed highest TFA. The major trans forms in all samples were elaidic acid and linolelaidic acid (C18:2, trans-6). Vaccenic acid was detected only in health drinks (0.33%). Six out of 15 product labels were misrepresenting the TFA content. Stringent regulations are required for reducing TFA content of commonly consumed foods in India.
Downloads
References
Adlof R O, Duval S and Emken E A 2000. Biosynthesis of conjugated linoleic acid in humans. Lipids, 35: 131-135.
Alireza S, Tan C P, Hamed and Che M Y B 2010. Effect of frying process on fatty acid composition and iodine value of selected vegetable oils and their blends. International Food Research Journal, 17(2): 295-302.
AOAC 2003.06. Official Methods of Analysis, Association of Official Analytical Chemists.
AOAC 2001.996.06. Official Methods of Analysis, Association of Official Analytical Chemists.
Bendsen N T, Christensen R, Bartels E M and Astrup A 2011. Consumption of industrial and ruminant trans fatty acids and risk of coronary heart disease: a systematic review and meta-analysis of cohort studies. European Journal of Clinical Nutrition, 65: 773-783.
Dhaka V, Gulia N, Ahlawat K and Khatkar B 2011. Trans fats - sources, health risks and alternative approach - A review. Journal of Food Science and Technology, 48: 534-541.
Lock A L and Bauman D E 2004. Modifying milk fat composition of dairy cowsto enhance fatty acids beneficial to human health. Lipids, 39: 1197-1206.
Mackay J and Mensah G 2004. The atlas of heart disease and stroke. Gen eva : WHO. Available at URL: www.who.int/cardiovascular_diseases/en/cvd_atlas_25_futur e.pdf
Micha R and Mozaffarian D 2008. Trans fatty acids: effects on cardio metabolic health and implications for policy. Prostaglandins, Leukotrienes and Essential Fatty Acids, 79: 147-152.
Mozaffarian D, Cao H, King I B, Lemaitre R N, Song X, Siscovick D S and Hotamisligil G S 2010. Trans-palmitoleic acid, metabolic risk factors and new-onset diabetes in U.S. adults. Annals of Internal Medicine, 153: 790-799.
Mozaffarian D, Katan M B, Ascherio A, Stampfer M J and Willett W C 2006. Trans fatty acids and cardiovascular disease. New England Journal of Medicine, 354: 1601-1613.
Phillips K, Ruggio D and Amanna K 2010. Optimization of standard gas chromatographic methodology for the determination of trans fat in unlabeled bakery products. Food Analytical Methods, 3: 277-294.
Scientific Advisory Committee on Nutrition 2007. Update on trans fatty acids and health. Position statement, London: TSO. http://www.sacn.gov.uk/pdfs/ sacn_trans_fatty_acids_ report.pdf [Accessed 4.01.12].
Tardy A L, Morio B, Chardigny J M and Malpuech B C 2011. Ruminant and industrial sources oftrans-fat and cardiovascular and diabetic diseases. Nutrition Research Reviews, 24: 111-117.
Turpeinen A M, Mutanen M, Aro A, Salminen I, Basu S, Palmquist D L and Griinari J M 2002. Bio-conversion of vaccenic acid to conjugated linoleic acid in humans. American Journal of Clinical Nutrition, 76: 504-510.
U.S. Food and Drug Administration 2003. Food labelling: trans fatty acids in nutrition labeling, nutrient content claims, and health claims. 68. Federal Register 41433-41506.
Watkins C 2004. Trans Symposium a rousing success. Inform, 15: 229-231.
Wolff R L 1994. Cis-trans isomerization of octadecatrienoic acids during heating. Study of pinolenic (cis-5, cis-9, cis-12 18:3) acid geometrical isomers in heated pine seed oil. Journal of the American Oil Chemists Society, 71: 1129-1134.
WHO 2003. Diet, nutrition and the prevention of chronic diseases. Report of a Joint WHO/FAO Expert Consultation. World Health Organization Technical Report Series 916.