[Whey as a substrate for obtaining an edible yeast].

Using a fermentative process of whey through Kluyveromyces fragilys, Jörgensen, the Author prepared two edible products: Biomass I (yeast) and Biomass II (yeast plus protein of whey). Biomass I offered 53% of protein, and the yield was 22,3 g/1 whey. Biomass II, 62% of protein and yield of 27,7 g/1 whey. The test of food efficiency for Biomass II was similar to that presented by casein; the protein eficiency ratio at the level of 5% was the same, both for Biomass I and II. More research is needed specially to determine the economical convenience of the process.