Digestion and Absorption of Protein (continued) Free amino acids absorbed by cotransport with Na + . Dipeptides and tripeptides transported by secondary active transport using a H + gradient to transport them into the cytoplasm. Hydrolyzed into free amino acids and then secreted into the blood. Insert fig.
Substitute an equal amount of sour cream for milk in a recipe. Examine the texture of the sour cream. Adjust the level of shortening or butter in the recipe. Reduce the shortening by 1/2 cup for thick or heavy sour cream or 1/3 cup for thin or light sour cream.
1 Sour cream can be made with the same procedure as buttermilk, using one cup of cream mixed thoroughly with 2 tbsp fresh active buttermilk and letting it sit for 12-24 hours at room temperature. 2  The higher butterfat in the cream, the thicker the finished sour cream.