✨ Food Standards Specifications
NEW ZEALAND GAZETTE, No. 50 — 8 MAY 2015
at pH 2 in place of 5% acetic acid, the ion exchange resins shall result in no more than 25 ppm of organic extractives.
S3—7 Specification for bentonite
Bentonite must comply with a monograph specification in section S3—2 or section S3—3, except that the pH determination for a bentonite dispersion must be no less than 4.5 and no more than 10.5.
S3—8 Specification for bromo-chloro-dimethylhydantoin
(1) In this section:
bromo-chloro-dimethylhydantoin (CAS Number: 126-06-7) is the chemical with:
(a) the formula C₅H₆BrClN₂O₂; and
(b) the formula weight 241.5.
(2) For bromo-chloro-dimethylhydantoin, the chemical specifications are the following:
(a) appearance—solid or free flowing granules;
(b) colour—white;
(c) odour—faint halogenous odour;
(d) melting point—163–164°C;
(e) specific gravity—1.8–2;
(f) solubility in water—0.2 g/100 g at 25°C;
(g) stability—stable when dry and uncontaminated.
(3) Bromo-chloro-dimethylhydantoin must be manufactured in accordance with the following process:
(a) solid dimethylhydantoin (DMH) must be dissolved in water with bromine and chlorine;
(b) the reaction must be 0.5 mole bromine and 1.5 mole chlorine for one mole DMH;
(c) during the reaction the pH must be kept basic by the addition of caustic soda;
(d) the wet product must be transferred to a drier where it is dried to a powder at low temperature;
(e) the powder may then be tableted or granulated.
(4) Bromo-chloro-dimethylhydantoin may be assayed in accordance with various analytical methods, including GLC, HPLC, UV and NMR.
Note HPLC offers the best sensitivity.
S3—9 Specification for carboxymethyl cellulose ion exchange resin
(1) This specification relates to regenerated cellulose that has been cross-linked and alkylated with epichlorohydrin and propylene oxide, then derivatised with carboxymethyl groups, as a result of which the amount of epichlorohydrin plus propylene oxide is no more than 70% by weight of the starting amount of cellulose.
(2) The resins are limited to use in aqueous process streams for the isolation and purification of protein concentrates and isolates. The pH range for the resins shall be no less than 2 and no more than 10, and the temperatures of water and food passing through the resin bed must be no more than 40°C.
(3) When subjected to the extraction regime listed in the 21 CFR § 173.25(c)(4), but using dilute hydrochloric acid at pH 2 in place of 5% acetic acid, the ion exchange resins shall result in no more than 25 ppm of organic extractives.
S3—10 Specification for dibromo-dimethylhydantoin
(1) In this section:
dibromo-dimethylhydantoin means the chemical with CAS Number 77-48-5 and formula C₅H₆Br₂N₂O₂.
(2) For dibromo-dimethylhydantoin, the specifications (which relate to purity) are the following:
(a) dibromo-dimethylhydantoin—no less than 97%;
(b) sodium bromide—no more than 2%;
(c) water—no more than 1%.
S3—11 Specification for diethyl aminoethyl cellulose ion exchange resin
(1) This specification relates to:
(a) regenerated cellulose, cross-linked and alkylated with epichlorohydrin and propylene oxide, then derivatised with tertiary amine groups whereby the amount of epichlorohydrin plus propylene oxide is no
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NZ Gazette 2015, No 50
✨ LLM interpretation of page content
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Food Standards (Proposal P1025 – Code Revision) Variation—Australia New Zealand Food Standards Code – Amendment No. 154
(continued from previous page)
🏥 Health & Social Welfare25 March 2015
Food Standards, Units of Measurement, Vitamins, Carotenes, Tocopherols, Conversion Factors