2. Four facets of grain quality
2.1. Milling quality
Milling quality determines the final yield and the broken kernel rate of the milled rice, which
is of concern for consumers and farmers. Three main parameters, brown rice recovery (the
percentage of brown rice to rough rice), milled rice recovery (the percentage of milled rice to
rough rice), and head rice recovery (the percentage of head rice to rough rice) are used to
evaluate the quality and efficiency of the milling process. Brown rice is the de-hulled rice with