whole grains
...that whole grains are often more expensive than refined grains because their higher oil content is susceptible to oxidation, complicating processing, storage, and transport?
...that <b id="mwAeo"><a href="./Whole_grain" id="mwAes" rel="mw:WikiLink" title="Whole grain">whole grains</a></b> are often more expensive than refined grains because their higher oil content is susceptible to <a class="mw-redirect" href="./Oxidation" id="mwAew" rel="mw:WikiLink" title="Oxidation">oxidation</a>, complicating processing, storage, and transport?