It was developed two powder formulas, soybean based, zinc, selenium and magnesium enriched, from soy milk and fat-free soy milk. They were named FPSA -soybean milk formula and FPS60 - fat -free soybean milk formula. Besides soybean, the two formulas were added dehydrated yolk egg, maltodextrin, soybean oil, canola oil, coconut oil, vitamin and mineral mix and stabilizer. Zinc, Selenium and Magnesium were added to attend 200% of RDA. Protein quality was carried out by experimental design with male Wistar rats, and it was analyzed NPR, NPU and digestibility. There was no significant difference (p > 0,05) between FPSA and FPSA60 and between the two formulas and casein, related to NPR and NPU. Both formulas showed similar results on digestibility, but lower than casein. It was concluded that the formulas tested had good biologic value, since they showed a protein quality index close to casein.
protein quality; soybean milk; formula
