A good quote from page 62 of In Defense of Food:
“The problem with nutrient-by-nutrient nutrition science,” points out Marion Nestle, a New York University nutritionist, “is that it takes the nutrient out of the context of the food, the food out of the context of the diet, and the diet out of the context of the lifestyle.”
Whole foods are so complex chemically and biologically that there is no way that we could recreate its nutritional value in processed foods.