磨成粉，所有成份仍在。Refine 是糧食加工過程去除胚臍和外麵纖維層。兩者易混淆。曾學過糧食加工

Refined grains have been milled, a process that removes the bran and germ. This is done to give grains a finer texture and improve their shelf life, but it also removes dietary fiber, iron, and many B vitamins. Some examples of refined grain products are white flour, de-germed cornmeal, white bread, and white rice.