Tomato sauce were prepared with five diferent thickening agents
including roux(TR), non-glutinous rice powder(TN), glutinous rice
powder(TG), potato starch(TP) and tapioca starch(TT) to examine
proximate composition(moisture, carbohydrate, crude protein, crude fat, crude
ash, crude ash), calorie, color value, pH, salinity, °Brix, reducing sugar,
viscosity and sensory test(atribute diference, aceptance).
The results were as folows:
Moisture, carbohydrate content were the lowest while crude fat and
calorie were the highest in TR(roux). On the other hand, moisture,
carbohydrate content were the highest while crude protein, crude fat and46
calorie were the lowest in TP(potato starch) and TT(tapioca starch). Using
potato starch and tapioca starch are suposed to be prepared low-fat,
low-calorie tomato sauce. L value was the highest in TN(non-glutinous rice
powder), a value was the highest in TP(potato starch), b values was the
highest in TR(roux). pH of tomato sauce showed a range of 5.24 to 5.39.
TG(glutinous rice powder) was the highest and TT(tapioca starch) was the
lowest in pH. TP(potato starch) was the highest salinity, reducing sugar
was the lowest. TG(glutinous rice powder) was the lowest salinity, °Brix
was the highest. And TR(roux) was the lowest °Brix, reducing sugar was
the highest. In viscosity, TG(glutinous rice powder) was the highest and
TT(tapioca starch) was the lowest.
The atribute diference test results was the highest in glos, color
intensity, tomato odor, tomato taste, pure taste in TT(tapioca starch) and
savory taste, oily taste, thicknes, residue was the highest in TR(roux). The
preference test results reveal that the apearance, flavor, taste, texture and
overal aceptance level was the highest in TP(potato starch) and
TT(tapioca starch).
The results of this study, tomato sauce prepared potato starch and tapioca
starch instead of the traditional roux was higher in sensory aceptabilty.
Recently, people is avoided high-fat and high-calorie fods, and potato
starch and tapioca starch are confirmed that the tomato sauce can be made
of a low-fat and low-calorie.