发布单位：FDA
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备注：硬质小麦粉是将洁净的硬质小麦磨碎、筛分后制成的食品，当按137.105（c）（4）规定检验粒度时，不小于98%的粉料通过70号筛，粉中无谷糠和胚芽，要求其灰分含量不大于1.5%，水分含量不大于15%。本节中灰分、水分和粒度用137.105（c）中规定的方法测定。
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。
§ 137.220 Durum flour.
（a） Durum flour is the food prepared by grinding and bolting cleaned durum wheat. When tested for granulation as prescribed in §137.105（c）（4）， not less than 98 percent of such flour passes through the No. 70 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 1.5 percent. Its moisture content is not more than 15 percent.
（b） For the purpose of this section, ash, moisture, and granulation are determined by the methods prescribed in §137.105（c）。
