Rice Bran
<p>Rice bran is a byproduct of the rice milling process (the conversion of <a href="http://en.wikipedia.org/wiki/Brown_rice" title="Brown rice" >brown rice</a> to <a href="http://en.wikipedia.org/wiki/White_rice" title="White rice" >white rice</a>), and it contains various <a href="http://en.wikipedia.org/wiki/Antioxidant" title="Antioxidant" >antioxidants</a> that impart beneficial effects on human health. A major rice bran fraction contains 12%-13% oil and highly <a href="http://en.wikipedia.org/wiki/Unsaponifiable" title="Unsaponifiable" >unsaponifiable</a> components (4.3%).<sup class="Template-Fact" >[<i><a href="http://en.wikipedia.org/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed" >citation needed</a></i>]</sup></p>
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This fraction contains <a href="http://en.wikipedia.org/wiki/Tocotrienol" title="Tocotrienol" >tocotrienols</a> (a form of <a href="http://en.wikipedia.org/wiki/Vitamin_E" title="Vitamin E" >vitamin E</a>), gamma-oryzanol and <a href="http://en.wikipedia.org/wiki/Beta-sitosterol" title="Beta-sitosterol" class="mw-redirect" >beta-sitosterol</a>; all these constituents may contribute to the lowering of the plasma levels of the various parameters of the lipid profile. Rice bran also contains a high level of dietary fibres (<a href="http://en.wikipedia.org/wiki/Beta-glucan" title="Beta-glucan" >beta-glucan</a>, <a href="http://en.wikipedia.org/wiki/Pectin" title="Pectin" >pectin</a> and gum). In addition, it also contains <a href="http://en.wikipedia.org/wiki/Ferulic_acid" title="Ferulic acid" >ferulic acid</a>, which is also a component of the structure of nonlignified <a href="http://en.wikipedia.org/wiki/Plant_cell" title="Plant cell" >cell</a> walls. However, some research suggests there are levels of inorganic <a href="http://en.wikipedia.org/wiki/Arsenic" title="Arsenic" >arsenic</a> (a toxin and carcinogen) present in rice bran. One study found the levels to be 20% higher than in drinking water.<sup id="cite_ref-0" class="reference" ><a href="http://en.wikipedia.org/wiki/Rice_bran#cite_note-0" >[1]</a></sup> Other types of bran (derived from wheat, oat or barley) contain less arsenic than rice bran, and are just as nutrient rich.<sup id="cite_ref-1" class="reference" ><a href="http://en.wikipedia.org/wiki/Rice_bran#cite_note-1" >[2]</a></sup></p>