AOAC Methods for Review in Codex STAN 234_11-2018

AOAC Official Methods Listed in CXS 234 for Milk and Milk Products

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Table 985.35A. Interlaboratory study results for determination of minerals in infant formula by AA spectrophotometry a Infant formula Mean, m g/g s r s R RSD r , % RSD R , % r b R c HorRat Calcium Enteral 7 660 70 11 196.0 1.83 RTF d soy 2 808 81 10 226.8 1.72 RTF soy (4 and 6) e 660 36 73 5.4 11 100.8 204.4 1.83 Soy powder (1 and 5) e 5270 320 482 6.1 9.2 896.0 1349.6 2.09 Whey powder 3510 194 5.5 543.2 1.18 Magnesium Enteral 7 208 12.7 6.8 35.6 0.95 RTF soy (2 and 6) e, f 69.9 3.1 3.7 4.4 5.3 8.7 10.4 0.63 RTF soy 4 101 3.8 3.8 10.6 0.48 Soy powder (1 and 5) e 454 15.8 24.1 3.5 5.3 44.2 67.5 0.84 Whey powder 3 367 17.6 4.8 49.3 0.73 Zinc Enteral 7 11.0 0.89 8.0 2.49 0.72 RTF soy 2 7.50 0.52 6.9 1.46 0.59 RTF soy (4 and 6) e 6.45 0.43 0.51 6.7 7.9 1.20 1.43 0.66 Soy powder (1 and 5) e 44.3 0.87 3.2 2.0 7.2 2.44 8.96 0.80 Whey powder 3 48.3 3.3 6.8 9.24 0.77 Copper Enteral 7 1.02 0.12 12 0.34 0.76 RTF soy (2 and 4) e 0.80 0.056 0.106 7.0 13 0.157 0.30 0.79 RTF soy 6 0.56 0.06 11 0.17 0.63 Soy powder (1 and 5) e 3.90 0.19 0.30 4.8 7.6 0.53 0.84 0.59 Whey powder 3 4.76 0.23 4.8 0.64 0.38 Iron Enteral 7 10.1 0.6 5.9 1.68 0.53 RTF soy (2 and 4) e 12.8 0.53 0.53 4.1 4.1 1.48 1.48 0.38 RTF soy 6 13.5 0.56 4.1 1.57 0.38 Soy powder (1 and 5) e 89.6 5.6 7.6 6.2 8.4 15.7 21.28 1.04 Whey powder 3 95 4.5 4.8 12.6 0.60 Manganese Enteral 7 1.67 0.10 6.1 0.28 0.41 RTF soy (2 and 6) e 0.305 0.015 0.026 4.8 8 0.042 0.073 0.42 RTF soy 4 0.408 0.056 14 0.157 0.77 Soy powder (1 and 5) e 2.87 0.32 0.40 11.0 13 0.896 1.12 0.96 Whey powder 3 0.87 0.093 11 0.26 0.68 Potassium Enteral 7 1340 85 6.8 238 1.26 RTF soy 2 1050 28 2.7 78.4 0.48 RTF soy (4 and 6) e, f 840 14 18 2.0 2.1 39.2 50.4 0.36 Soy powder (1 and 5) e 6390 128 356 2.0 5.6 358.4 996.8 1.31 Whey powder 3 5080 153 3.0 428.4 0.68 Sodium Enteral 7 544 20 3.7 56 0.60 RTF soy 2 312 9.4 3.0 26.32 0.45 RTF soy (4 and 6) e, f 238 13.7 13.7 5.8 5.8 38.36 38.36 0.83 Soy powder (1 and 5) e 2090 73 90 3.5 4.3 204.4 252 0.85 Whey powder 3 1290 87 6.7 243.6 0.87 a Based on collaborative study results of modified method. Data received from 8 laboratories were used in statistical analysis. b r = 2.8 ´ s r . c R = 2.8 ´ s R . d RTF = Ready-to-feed. e Closely matched (Youden) pairs. f Based on results from 7 laboratories (excluding Grubbs outlier.)

ã 2005 AOAC INTERNATIONAL

10/9/2018