§172.210 用于新鲜柑橘类水果的涂层物质(Coatings on fresh citrus fruit)

　　�� 172.210 Coatings on fresh citrus fruit.

　　Coatings may be applied to fresh citrus fruit for protection of the fruit in accordance with the following conditions:

　　（a� The coating is applied in the minimum amount required to accomplish the intended effect.

　　（b� The coating may be formulated from the following components, each used in the minimum quantity required to accomplish the intended effect:

　　�?� Substances generally recognized as safe for the purpose or previously sanctioned for the purpose.

　　�?� One or more of the following:

Component	Limitations
Fatty acids	Complying with ��172.860.
Oleic acid derived from tall oil fatty acids	Complying with ��172.862.
Partially hydrogenated rosin	Catalytically hydrogenated to a maximum refractive index of 1.5012 at 100 ��C. Color of WG or paler.
Pentaerythritol ester of maleic anhydride-modified wood rosin	Acid number of 134�C145; drop-softening point of 127 ��C�C173 ��C; saponification number of less than 280; and a color of M or paler.
Pentaerythritol ester of maleic anhydride-modified wood rosin	Acid number of 176�C186; drop-softening point of 110 ��C�C118 ��C; saponification number of less than 280; and a color of M or paler.
Polyethylene glycol	Complying with ��172.820. As a defoamer and dispersing adjuvant.
Polyhydric alcohol diesters of oxidatively refined (Gersthofen process) montan wax acids	Complying with ��178.3770 of this chapter and having a dropping point of 77 to 83 ��C (170.6 to 181.4 ��F), as determined by ASTM Method D566�C76 (Reapproved 1982), ��Standard Test Method for Dropping Point of Lubricating Grease,�� which is incorporated by reference (Copies are available from the American Society for Testing and Materials, 100 Barr Harbor Dr., West Conshohocken, Philadelphia, PA 19428-2959, or at the National Archives and Records Administration (NARA). For information on the availability of this material at NARA, call 202�C741�C6030, or go to:http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.) using as a solvent xylene-ethyl alcohol in a 2:1 ratio instead of toluene-ethyl alcohol in a 2:1 ratio.
Sodium lauryl sulfate	Complying with ��172.822. As a film former.
Wood rosin	Color of K or paler.

　　�?� In lieu of the components listed in paragraph （b� �?� and �?� of this section, the following copolymer and one or more of the listed adjuvants.

Component	Limitations
Vinyl chloride-vinylidene chloride copolymer	As an aqueous dispersion containing a minimum of 75 percent water when applied.
Polyethylene glycol	Complying with ��172.820. As a defoamer and dispersing adjuvant.
Polyvinylpyrrolidone	As an adjuvant.
Potassium persulfate	As an adjuvant.
Propylene glycol alginate	As an adjuvant.
Sodium decylbenzenesulfonate	As an adjuvant.

　　�?� In lieu of the components listed in paragraph （b� �?� and �?� of this section, the following rosin derivative and either or both of the listed adjuvants:

Component	Limitations
Calcium salt of partially dimerized rosin	Having a maximum drop-softening point of 197 ��C and a color of H or paler. It is prepared by reaction with not more than 7 parts hydrated lime per 100 parts of partially dimerized rosin. The partially dimerized rosin is rosin that has been dimerized by sulfuric acid catalyst to a drop-softening point of 95 ��C to 105 ��C and a color of WG or paler.
Petroleum naphtha	As adjuvant. Complying with ��172.250.
Sperm oil	As adjuvant.

　　[42 FR 14491, Mar. 15, 1977; 49 FR 5747, Feb. 15, 1984, as amended at 51 FR 2693, Jan. 21, 1986; 52 FR 18911, May 20, 1987; 61 FR 14245, Apr. 1, 1996]

　　更多关于美国 FDA 已批准的直接用于人类食品的添加剂种类法规，请点击 美国FDA 21 CFR �?72部分已批准的直接用于人类食品的添加剂种类汇怺�/a>