Assessment of Iron Fortification Influence on Organoleptics and Physico-Chemical Properties of Yogurt


1 Graduate Student, Department of Food Science and Technology, Damghan Branch, Islamic Azad University, Damghan, Iran

2 Department of food Science and Technology, Damghan Branch, Islamic Azad University, Damghan, Iran


Innumerable percentage of the world population suffers from shortage of vitamins and minerals which is usually called malnutrition. Enough perception and access of such essential vitamins and minerals have close relationship with eternity, physical and mental developments, good health, general welfare of individuals and societies. In this research, the fortification of yogurt with iron has been studied. The kinds of iron used in this study include: FeCl3 (H2O)6, The whey protein-chelated iron (Fe-WP) and The Fe-Casein complex (Fe-CN) that each of them were evaluated in three quantities (10, 20 and 40 milligrams per one kilogram of milk). Then their chemical experiments and organoleptic specifications were studied after keeping 21 days in refrigerator and their results were reported. Results showed that all of these iron compounds were suitable for yogurt but two complexes of iron, including Fe-WP and Fe-CN, were better to be used.


Abou El- Nour A.M., El- Kholy A.M., Abd
El-Salam M.H., 2004. Rheological properties
of cows milk yoghurt treated by
transglutaminase (TGase). Egypt. J. Dairy
Sci., 32: 73-86.
AugustinM.A., 2000. Mineral salts and their
effect on milk functionality. Australian J.
Dairy Technol., 55: 61-64.
Azzam M.A., 2009. Effect of fortification
with iron-whey protein complex on quality of
yoghurt Egypt. J. Dairy Sci., 37: 55-63.
Dave R.I., Shan N.P., 1988. The influences of
ingredient supplementation on the texture
characteristics of yoghurt. Australian J. Dairy
Technol., 53: 180-172.
El-Kholy Amira M., Osman M., Gouda A.,
Ghareeb Wafaa A., 2011. Fortification of
Yoghurt with Iron, World Journal of Dairy &
Food Sciences 6 (2): 159-165, 2011.
Gibson R.A., 2011. Milk fat and health
consequences. Estle Nutr Workshop Ser
Pediatr Program., 67: 197-207.
Hekmat S., McMahon D.J., 1997.
Manufacture and quality of iron-fortified
yogurt. J. Dairy Sci., 80: 3114-3122.
Hekmat SH, McMahon DJ., Distribution of
iron between caseins and whey proteins in
acidified milk. Lebensm. Wiss. Technol,
31: 632-638.
Institute of Medicine. Iron. In: Dietary
reference intakes for vitamin A, vitamin K,
arsenic, boron, chromium, copper, iodine,
iron, manganese, molybdenum, nickel,
silicon, vanadium, and zinc. Washington, DC:
National Academy Press, 2002: 290 ââ‚‌“393.
Mehanna N.M., Gonc S., 1988. Manufacture
of yoghurt from milk fortified with whey
powder. Egypt J. Dairy Sci., 16: 239.
Reali A., Greco F., Fanaro S., Atzei S.A.,
Puddu A.M., Moi M.M., Fanos V., 2010.
Fortification of maternal milk for very low
birth weight (VLBW) pre-term neonates.
Early Hum Dev., 86: 33-6. Follow this style
in all references
Sadler A.M., Lacroix D.E., Alford J.A., 1973.
Iron content of Baker's and cottage cheese
made from fortified skim milks. J. Dairy Sci.,
: 1267-1270
Tamime A. Y., Robinson R. K., 1999.
Yoghurt: Science and Technology. 2nd edn.
CRC Press, Boca Raton, FL.
Tamime A. Y., Deeth H. C., 1980. Yogurt:
technology and biochemistry. Journal of Food
Protection 43 939ââ‚‌“977
United States Department of Agriculture,
USDA Specifications for Yogurt,
Nonfat Yogurt and Lowfat Yogurt. Dairy
Lee W. J., Lucey J. A., 2010. Formation and
Physical Properties of Yogurt. Asian-Aust. J.
Anim. Sci. Vol. 23, No. 9 : 1127 - 1136
Zhang D., Mahoney A.W., 1991. Iron
fortification of process Cheddar cheese. J.
Dairy Sci., 74: 353-358.
Zhang D., Mahoney A. W., 1989.
Bioavailability of ironmilk- protein
complexes and fortified Cheddar cheese. J.
Dairy Sci. 72:2545.
Zhang D., Mahoney A. W., 1989. Effect of
iron fortification on quality of Cheddar
cheese. J. Dairy Sci. 72:322.