§ 173.50   Polyvinylpolypyrrolidone.

　　The food additive polyvinylpolypyrrolidone may be safely used in accordance with the following prescribed conditions:

　　（a） The additive is a homopolymer of purified vinylpyrrolidone catalytically produced under conditions producing polymerization and cross-linking such that an insoluble polymer is produced.

　?。╞） The food additive is so processed that when the finished polymer is refluxed for 3 hours with water, 5 percent acetic acid, and 50 percent alcohol, no more than 50 parts per million of extractables is obtained with each solvent.

　?。╟） It is used or intended for use as a clarifying agent in beverages and vinegar, followed by removal with filtration.

　　更多關(guān)于美國 FDA 可直接加入食品中的輔助性食品添加劑的種類法規(guī)，請點(diǎn)擊美國FDA 21 CFR 第173部分可直接加入食品中的輔助性食品添加劑種類匯總

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