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§177.2910 超滤?Ultra-filtration membranes)

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放大字体缩小字体2011-10-15 06:08:30 来源9a href="http://www.law.cornell.edu/cfr/text/21/177/2910" target="_blank" rel="nofollow">GPO浏览次数9span id="hits">2790
核心提示:在符合本节(a)(1)、(a)(2)、(a)(3)和(a)(4)中所指的超滤膜,可安全用于食品加工。用于成品超滤膜中的任何物质,均应符合本?74?75?77?78各部分和179.45中的有关规定,以及其中的各种质量指标。在大宗食品的商业加工中,超滤膜用于从液体中物理分离溶解的或胶体悬浮状的不同大小分子的组分。超滤膜应按良好生产操作规程保持卫生状态,以防止食品的微生物污染。本节中所指的丙烯腈共聚物,应符合180.22中的规定、/div>
发布单位
FDA
FDA
发布文号 60 FR 54426
发布日期 1995-10-24 生效日期 暂无
有效性状?/th> 废止日期 暂无
备注 在符合本节(a)(1)、(a)(2)、(a)(3)和(a)(4)中所指的超滤膜,可安全用于食品加工。用于成品超滤膜中的任何物质,均应符合本?74?75?77?78各部分和179.45中的有关规定,以及其中的各种质量指标。在大宗食品的商业加工中,超滤膜用于从液体中物理分离溶解的或胶体悬浮状的不同大小分子的组分。超滤膜应按良好生产操作规程保持卫生状态,以防止食品的微生物污染。本节中所指的丙烯腈共聚物,应符合180.22中的规定、/td>

177.2910 Ultra-filtration membranes


   Ultra-filtration membranes identified in paragraphs (a)(1? (a)(2? (a)(3? and (a)(4 of this section may be safely used in the processing of food, under the following prescribed conditions;

  (a ? Ultra-filtration membranes that consist of paper impregnated with cured phenol-formaldehyde resin, which is used as a support and is coated with a vinyl chloride-acrylonitrile copolymer.

  ? Ultra-filtration membranes that consist of a sintered carbon support that is coated with zirconium oxide (CAS Reg. No. 1314-23-4 containing up to 12 percent yttrium oxide (CAS Reg. No. 1314-36-9?

  ? Ultra-filtration membranes that consist of an aluminum oxide support that is coated with zirconium oxide (CAS Reg. No. 1314-23-4 containing up to 5 percent yttrium oxide (CAS Reg. No. 1314-36-9?

  ? Ultrafiltration membranes that consist of a microporous poly(vinylidene fluoride membrane with a hydrophilic surface modifier consisting of hydroxypropyl acrylate/tetraethylene glycol diacrylate copolymer.

  (b Any substance employed in the production of ultra-filtration membranes that is the subject of a regulation in parts 174, 175, 176, 177, 178 and 179.45 of this chapter conforms with the specifications of such regulation.

  (c Ultra-filtration membranes are used in the physical separation of dissolved or colloidally suspended varying molecular size components of liquids during the commercial processing of bulk quantities of food.

  (d Ultra-filtration membranes shall be maintained in a sanitary manner in accordance withgood manufacturing practiceso as to prevent potential microbial adulteration of the food.

  (e Ultrafiltration membranes identified in paragraph (a)(4 may be used to filter aqueous or acidic foods containing up to 13 percent of alcohol at temperatures not to exceed 21 C ?0 F?

  (f To assure safe use of the ultra-filtration membranes, the label or labeling shall include adequate directions for a pre-use treatment, consisting of conditioning and washing with a minimum of 8 gallons of potable water prior to their first use in contact with food.

  (g Acrylonitrile copolymers identified in this section shall comply with the provisions of 180.22 of this chapter.

    [42 FR 14572, Mar. 15, 1977, as amended at 53 FR 17925, May 19, 1988; 58 FR 48599, Sept. 17, 1993; 60 FR 54426, Oct. 24, 1995]

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