<b>SOY YOGURT FORTIFIED WITH IRON AND CALCIUM: STABILITY DURING THE STORAGE</b>

Abstract

<p align="justify"> The objective of this study was to prepare a soy yogurt, fortifi ed with microencapsulated FeSO4.7H2O (12mg of iron/l) and calcium citrate (600mg of calcium/l), and evaluate the stability of the fi nal product during the storage at 10°C. The soy yogurt without addition of iron and calcium was used as control. Analysis of these samples was done once a week, during 28 days, for: pH, titratable acidity, rheological properties (viscosity and consistency), sensory characteristics (acceptance test) and enumeration of viable cells (L. delbrueckii ssp. bulgaricus and S. thermophilus). The pH, titratable acidity, viscosity, consistency and acceptance test data were submitted to analysis of variance and Tukey’s test. During the storage was observed a decrease in the pH and increase in the titratable acidity, due to the lactic cultures to be continue viable (107CFU/g) in the product. The fortifi ed yogurt exhibited lower viscosity, but this parameter did not change signifi cantly (p0,05) during the storage time. The acceptance test results showed that the control and fortifi ed samples did not exhibit signifi cant differences (p0,05), during the studied period, in relation to the all sensory attributes evaluated. In conclusion, the present work enabled the development of a iron and calcium fortifi ed soy yogurt, stable during 28 days at 10°C, that could be used in the prevention and control of mineral defi ciencies in general population. </p>

Keywords

• Soy yogurt
• iron
• calcium
• microencapsulation
• storage
• stability.