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.
You can also use 3/4 cups of yogurt and 1/4 cup of milk to replace buttermilk. In some of my recipes I can tell a little bit of difference in the texture if I use buttermilk over just the âsouredâ milk made with vinegar or lemon juice that is why I usually use buttermilk when it calls for it. If you want, you can still use it. 2  You just need to replace each 2 tsp. of baking powder with 1/2 tsp. of baking soda. 3  You can interchange yogurt, sour cream and buttermilk in most recipes. 4  If you need your recipe to be looser, you can use 1/4 cup milk plus 3/4 cup yogurt or sour cream in place of buttermilk.