更多关于已证实属于一般公认为安全（GRAS）的可直接加入食品中的物质种类，请点击美国FDA 21 CFR 第184部分已证实属于一般公认为安全（GRAS）的可直接加入食品中的物质种类汇总
§ 184.1945 Vitamin B12.
（a） Vitamin B12, also known as cyanocobalamin （C63H88CoN14O14P, CAS Reg. No. 68–0919–099）, is produced commercially from cultures of Streptomyces griseus.
（b） The ingredient meets the specifications of the Food Chemicals Codex, 3d Ed. （1981）, p. 343, which is incorporated by reference. Copies are available from the National Academy Press, 2101 Constitution Ave. NW., Washington, DC 20418, or available for inspection at the National Archives and Records Administration （NARA）. For information on the availability of this material at NARA, call 202–741–6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
（c） In accordance with§184.1（b）（1）, the ingredient is used in food with no limitation other thancurrent good manufacturing practice. The affirmation of this ingredient as generally recognized as safe （GRAS） as a direct human food ingredient is based upon the following current good manufacturing practice conditions of use:
（1） The ingredient is used as a nutrient supplement as defined in§170.3（o）（20） of this chapter.
（2） The ingredient is used in food at levels not to exceed current good manufacturing practice. Vitamin B12also may be used in infant formula in accordance with section 412（g） of theFederal Food, Drug, and Cosmetic Act（the act） or with regulations promulgated under section 412（a）（2） of the act.
（d） Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[50 FR 6341, Feb. 15, 1985]
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