FDA食品添加剂使用卫生 173 SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION
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C0EF398F7D9249689CC3ABBFD2530ACE |
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文件大小(MB)： |
0.53 |
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页数： |
80 |
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文件格式： |
doc |
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日期： |
2007-8-3 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
[Code of Federal Regulations] [Title 21, Volume 3] [Revised as of April 1, 2006] [CITE: 21CFR173] ,TITLE 21--FOOD AND DRUGS,CHAPTER I--FOOD AND DRUG ADMINISTRATION,DEPARTMENT OF HEALTH AND HUMAN SERVICES,SUBCHAPTER B--FOOD FOR HUMAN CONSUMPTION (CONTINUED), PART 173 SECONDARY DIRECT FOOD ADDITIVES PERMITTED IN FOOD FOR HUMAN CONSUMPTION Subpart A--Polymer Substances and Polymer Adjuvants for Food Treatment Sec. 173.5 Acrylate-acrylamide resins. ,Acrylate-acrylamide resins may be safely used in food under the following prescribed conditions:,(a) The additive consists of one of the following:,(1) Acrylamide-acrylic acid resin (hydrolyzed polyacrylamide) is produced by the polymerization of acrylamide with partial hydrolysis, or by copolymerization of acrylamide and acrylic acid, with the greater part of the polymer being composed of acrylamide units.,(2) Sodium polyacrylate-acrylamide resin is produced by the polymerization and subsequent hydrolysis of acrylonitrile in a sodium silicate-sodium hydroxide aqueous solution, with the greater part of the polymer being composed of acrylate units.,(b) The additive contains not more than 0.05 percent of residual monomer calculated as acrylamide.,(c) The additive is used or intended for use as follows:,(1) The additive identified in paragraph (a) (1) of this section is used as a flocculent in the clarification of beet sugar juice and liquor or cane sugar juice and liquor or corn starch hydrolyzate in an amount not to exceed 5 parts per million by weight of the juice or 10 parts per million by weight of the liquor or the corn starch hydrolyzate.,(2) The additive identified in paragraph (a)(2) of this section is used to control organic and mineral scale in beet sugar juice and liquor or cane sugar juice and liquor in an amount not to exceed 2.5 parts per million by weight of the juice or liquor.,[42 FR 14526, Mar. 15, 1977, as amended at 46 FR 30494, June 9, 1981] Sec. 173.10 Modified polyacrylamide resin. ,Modified polyacrylamide resin may be safely used in food in accordance with the following prescribed conditions:,(a) The modified polyacrylamide resin is produced by the copolymerization of acrylamide with not more than 5-mole percent [beta]-methacrylyloxyethy-ltrimethylammonium methyl sulfate.,(b) The modified polyacrylamide resin contains not more than 0.05 percent residual acrylamide.,(c) The modified polyacrylamide resin is used as a flocculent in the clarification of beet or cane sugar juice in an amount not exceeding 5 parts per million by weight of the juice.,(d) To assure safe use of the additive, the label and labeling of the additive shall bear, in addition to the other information required by the act, adequate directions to assure use in compliance with paragraph (c) of this section. Sec. 173.20 Ion-exchange membranes. ,Ion-exchange membranes may be safely used in the processing of food under the following prescribed conditions:,(a) The ion-exchange membrane is prepared by subjecting a polyethylene base conforming to 177.1520 of this chapter to polymerization with styrene until the polystyrene phase of the base is not less than 16 percent nor more than 30 percent by weight. The base is then modified by reaction with chloromethyl methyl ether, and by subsequent amination with trimethylamine, dimethylamine, diethylenetriamine, or dimethylethanolamine.,(b) The ion-exchange membrane is manufactured so as to comply with the following extraction limitations when subjected to the described procedure: Separate square-foot samples of membrane weighing approximately 14 grams each are cut into small pieces and refluxed for 4 hours in 150 cubic centimeters of the following solvents: Distilled water, 5 percent acetic acid, and 50 percent alcohol. Extraction from each sample will not exceed 0.4 percent by weight of sample.,(c) The ion-exchange membrane will be used in the production of grapefruit juice to adjust the ratio of citric acid to total solids of the grapefruit juice produced. Sec. 173.21 Perfluorinated ion exchange membranes. ,Substances identified in paragraph (a) of this section may be safely used as ion exchange membranes intended for use in the treatment of bulk quantities of liquid food under the following prescribed conditions:,(a) Identity. The membrane is a copolymer of ethanesulfonyl fluoride, 2-[1-[difluoro-[(trifluoroethenyl)oxy]methyl]-1,2,2,2-tetrafluoroethoxy]-1,1,2,2,-tetrafluoro-, with tetrafluoroethylene that has been subsequently treated to hydrolyze the sulfonyl fluoride group to the sulfonic acid. The Chemical Abstracts Service name of this polymer is ethanesulfonic acid, 2-[1-[difluoro-[(t……
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