AOAC Final Action Methods in 2018

Table 2016.03. Summary of results of full multilaboratory testing set of samples

Requirements (SMPR 2014.015)

≤ 2%

≤ 4%

Mean, mg/ 100 g

Sample

RSD r , % b

RSD

R , %

HorRat, % d

n a

c

Adult nutritional powder, low-fat Adult nutritional RTF, high-fat Adult nutritional RTF, high-protein

16 10 16 16 16 15 14 15 15 15 14 13 16 16 11 11 16 16 12 12 10 13 11 8

385.5 162.6 154.2 701.1 478.6 510.3 413.7 330.4 386.1 380.2 357.3 443.6 372.5 42.4

0.58 1.05 1.94 0.72 0.87 0.94 1.12 1.76 1.12 0.73 0.61 1.00 0.44 0.83 3.14 e 1.12 12.4 e 1.49 0.52 1.68 1.28 0.56 1.37 0.68 1.5

3.46 2.54 3.01 2.44 3.76 2.34 2.01 3.49 2.54 4.08 2.27 3.67 3.56 3.90 7.21 e 3.89 20.8 e 3.50 2.24 3.47 3.85 2.57 2.72 3.57 2.8

0.75 0.48 0.57 0.58 0.84 0.36 0.45 0.76 0.54 0.88 0.49 0.78 0.79 0.84 1.09 0.60 3.11 0.49 0.48 0.75 0.64 0.74 0.61 0.48 0.74

SRM 1849a

Toddler formula powder, milk-based Infant formula RTF, milk-based Infant formula powder, soy-based Infant formula powder, milk-based Infant formula powder, FOS/GOS-based

Infant formula powder, partially hydrolyzed, soy-based Infant formula powder, partially hydrolyzed, milk-based

Infant formula powder, milk-based Child formula powder, milk-based

Infant elemental powder

Adult nutritional RTF, high-fat (placebo) Adult nutritional RTF, high-protein (placebo) Child formula powder, milk-based (placebo) Infant formula RTF, milk-based (placebo)

35.4 40.2 32.4 22.5

Infant elemental powder (placebo)

358.9 375.5 562.2 169.5 711.6

IDF-butter f, g IDF-cheese g

IDF-whey protein concentrate g

IDF-whole milk powder g

IDF-whole milk g IDF-whey powder g

95.3

9

281.3

a n = Number of laboratories (after outliers removed). b  RSD r = Relative standard deviation of repeatability. c  RSD R = Relative standard deviation of reproducibility. d  HorRat = Horwitz ratio. e Excluded from review, sample spoiled/expired. f IDF = International Dairy Federation. g  At this time, method is not approved for IDF milk products. See ISO 21422 | IDF 242 for these matrixes.

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