更多关于谷粉及相关产品的法规，请详见美国FDA 21 CFR 第137部分关于谷粉及相关产品的法规汇总。
§ 137.320 Semolina.
（a） Semolina is the food prepared by grinding and bolting cleaned durum wheat to such fineness that, when tested by the method prescribed in §137.300（b）（2）, it passes through a No. 20 sieve, but not more than 3 percent passes through a No. 100 sieve. It is freed from bran coat, or bran coat and germ, to such extent that the percent of ash therein, calculated to a moisture-free basis, is not more than 0.92 percent. Its moisture content is not more than 15 percent.
（b） For the purpose of this section, ash and moisture are determined by the methods therefor referred to in §137.105（c）.
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