Development and characterization of sauces formulations based on tomato and garlic powders

Background: Consumers have increasingly high demands in terms of taste, color and texture; they expect foods to be safe, healthy and nutritious, more appealing in color, texture and taste, and ready-to-use products such as sauces. Aim:  The aim of this study was to formulate sauces with tomato (TP) and garlic (GP) powders resulted from conventional and microwave dryings. Material and Methods: TP was used at 0, 5, 10 and 15% in the formulation of tomato sauce and GP at 0, 5, and 20% in the formulation of garlic sauce. For studying the effects of these powders on quality of sauces, some properties such as pH, Brix, apparent viscosity, mesophilic aerobic total flora (MATF), total coliforms,mold and yeast colony count and sensory evaluation were determined. Results: The results showed that the increase in the powders proportions increased pH from 5.32 to 5.72 for garlic sauces but decreased it from 5.42 to 5.04 for tomato sauces. However, the Brix values increased from 12.8 (5% tomato sauce) to 19.6% (15% tomato sauce), and from 15.5 (5% garlic sauce) to 18.8% (20% garlic sauce).On the other hand, it caused decrease in apparent viscosity from 7 to 3.5 cm for tomato sauces and from 5to 2.5 cm for garlic sauces. Similarly, MATF, mold and yeast colony count in sauce samples were diminished. Conclusion: The use of TP at 5% (estimated by 60% of the experts) is recommended for the formulation of the tomato sauce whereas for the garlic sauces, the two formulations used were equally appreciated by 100% of the experts.