更多關于已證實屬于一般公認為安全（GRAS）的可直接加入食品中的物質種類，請點擊美國FDA 21 CFR 第184部分已證實屬于一般公認為安全（GRAS）的可直接加入食品中的物質種類匯總
§ 184.1540 Nitrogen.
（a） Nitrogen （empirical formula N2, CAS Reg. No. 7727–37–9） is a colorless, odorless, flavorless gas that is produced commercially by the fractionation of liquid air.
（b） The ingredient must be of a purity suitable for its intended use.
?。╟） In accordance with §184.1（b）（1）, the ingredient is used in food with no limitations other than current 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 propellant, aerating agent, and gas as defined in §170.3（o）（25） of this chapter.
?。?） The ingredient is used in food at levels not to exceed current good manufacturing practice.
?。╠） Prior sanctions for this ingredient different from the uses established in this section do not exist or have been waived.
[48 FR 57270, Dec. 29, 1983, as amended at 73 FR 8607, Feb. 14, 2008]
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編輯：foodfagui