§ 137.165 21 CFR Ch. I (4–1–10 Edition)

§ 137.165 Enriched flour. to the food for enrichment purposes Enriched flour conforms to the defi- may be supplied by any safe and suit- able substance. Niacin equivalents as nition and standard of identity, and is derived from tryptophan content shall subject to the requirements for label not be used in determining total niacin statement of ingredients, prescribed content. for flour by § 137.105, except that: (a) It contains in each pound 2.9 mil- [42 FR 14402, Mar. 15, 1977, as amended at 43 ligrams of thiamin, 1.8 milligrams of FR 38578, Aug. 29, 1978; 46 FR 43414, Aug. 28, riboflavin, 24 milligrams of niacin, 0.7 1981; 58 FR 2877, Jan. 6, 1993; 61 FR 8796, Mar. milligrams of folic acid, and 20 milli- 5, 1996] grams of iron. § 137.170 Instantized flours. (b) It may contain added calcium in such quantity that the total calcium (a) Instantized flours, instant blend- content is 960 milligrams per pound. ing flours, and quick-mixing flours, are Enriched flour may be acidified with the foods each of which conforms to monocalcium phosphate within the the definition and standard of identity limits prescribed by § 137.175 for and is subject to the requirement for phosphated flour, but, if insufficient label statement of ingredients pre- additional calcium is present to meet scribed for the corresponding kind of the 960 milligram level, no claim may flour by §§ 137.105, 137.155, 137.160, be made on the label for calcium as a 137.165, 137.175, 137.180, and 137.185, ex- nutrient; cept that each such flour has been (c) The requirement of paragraphs (a) made by one of the optional procedures and (b) of this section will be deemed set forth in paragraph (b) of this sec- to have been met if reasonable over- tion, and is thereby made readily pour- ages of the vitamins and minerals, able. Such flours will all pass through a No. 20 mesh U.S. standard sieve (840- within the limits of good manufac- micron opening), and not more than 20 turing practice, are present to insure percent will pass through a 200 mesh that the required levels of the vitamins U.S standard sieve (74-micron opening). and minerals are maintained through- (b) The optional procedures referred out the expected shelf life of the food to in paragraph (a) of this section are: under customary conditions of dis- (1) A selective grinding and bolting tribution and storage. The quantitative procedure or other milling procedure, content of the following vitamins shall whereby controlled techniques are used be calculated in terms of the following to obtain a food too fine to meet the chemically identifiable reference granulation specification prescribed in forms: § 137.300(a) for farina. Reference form (2) An agglomerating procedure, whereby flour that originally meets Vitamin Molec- Name Empirical formula ular the granulation specification pre- weight scribed in § 137.105(a) has been modified by further processing, so that a number Thiamine ... Thiamine chlo- C12H17ClN4OS·HCl 337 .28 ride hydro- of the individual flour particles have chloride. been combined into agglomerates con- Riboflavin .. Riboflavin ...... C17H20N4O6 376.37 forming to the granulation specifica- Niacin ...... Niacin ...... C H NO 123.11 6 5 2 tions set out in paragraph (a) of this (d) It may contain not more than 5 section. percent by weight of wheat germ or (c) The name of each product covered partly defatted wheat germ; by this section is the name prescribed (e) In determining whether the ash by the definition and standard of iden- content complies with the require- tity for the corresponding kind of flour ments of this section, ash resulting as referred to in paragraph (a) of this from any added iron or salts of iron or section, preceded immediately and con- calcium or wheat germ is excluded in spicuously by the words ‘‘Instantized’’, calculating ash content. ‘‘Instant blending’’, or ‘‘Quick-mix- (f) All ingredients from which the ing’’. food is fabricated shall be safe and suit- [42 FR 14402, Mar. 15, 1977, as amended at 58 able. The vitamins and minerals added FR 2877, Jan. 6, 1993]

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