Total solids (oven drying method), ash content
(ignition of solid materials at 600oC in an electric
muffle furnace, Carbolite Co., England), protein
(Kjeldhal method), fat content (Soxhlet extraction
method) and crude fiber contents of the yogurt
samples were analyzed during the storage (AOAC,
2005). The titratable acidity and pH of yogurt samples
were also measured during the storage as previously
described. In here, yogurt without any added rice was
also used to evaluate the nutritional changes that may
be caused by addition of rice into yogurt.