6. AOACSPIFANMethods-2018Awards

154

1676 Butler-Thompson et al. : J ournal of AOAC I nternational V ol. 98, N o. 6, 2015

Table 7. Collaborative study results for free myo-inositol with all data included

Total No. labs

Total No. replicates

Mean, mg/100 g RTF SD r

Sample type

SD R 11.4

RSD r

, % RSD R

, % HorRat

412 a 4.22 4.26 7.17 3.65 3.11 5.10 5.10 3.17

Infant formula (NIST SRM 1849a) Infant formula powder soy-based Infant formula powder milk-based Infant formula RTF milk-based

10 10 10

22 22 20 20 22 22 22 22 20

11.3

2.75 3.03 3.95 1.33 0.97 2.92 3.61 4.45 1.84

2.77 7.26 5.43 2.89 11.4 12.6 4.81 6.24 2.87

0.43 0.80 0.60 0.34 1.22 1.32 0.54 0.71 0.30

0.127 0.168 0.095 0.035 0.090 0.185 0.227 0.058

0.305 0.232 0.207 0.412 0.389 0.246 0.318 0.091

9

Infant formula powder partial hydrolyzed milk-based 10 Infant formula powder partial hydrolyzed soy-based 10

Child formula powder Infant elemental powder

10 10

Infant formula RTF milk-based, unfortified a  Data reported as mg/kg powder.

9

Table 8. Collaborative study results for phosphatidylinositol bound myo-inositol with all data included

Total No. labs

Total No. replicates

Mean, mg/100 g RTF SD r

Sample type

SD R 2.62

RSD r

, % RSD R

, % HorRat

9.51 a

Infant formula (NIST SRM 1849a) Infant formula powder soy-based Infant formula powder milk-based Infant formula RTF milk-based

9 9 9 8

20 20 18 18 20 20 20 20 20

1.82

18.7 6.94 3.92 8.36 4.72 5.53 6.89

26.8 23.2 25.9 25.2 26.4 21.1 25.8

2.36 2.30 2.15 1.91 1.86 2.02 1.94

2.10

0.150 0.501 0.026 0.172 0.030 0.091 0.010 0.058 0.094 0.358 0.023 0.088

0.667 0.348 0.214

Infant formula powder partial hydrolyzed milk-based 9 Infant formula powder partial hydrolyzed soy-based 9

1.64

Child formula powder Infant elemental powder

9 9 8

0.328

0

0

0

0

0

0

Infant formula RTF milk-based, unfortified a  Data reported as mg/kg powder.

0.305

0.024 0.085

7.71

26.9

2.00

Table 9. Collaborative study results for free plus phosphatidylinositol bound myo-inositol with all data included

Mean, mg/100 g RTF

Total No. labs

Total No. replicates

Sample type

SD R 11.9

RSD r

, % RSD R

, % HorRat

SD r 11.9

422 a 6.27 4.92 7.50 3.84 4.71 5.42 5.08 3.46

Infant formula (NIST SRM 1849a) Infant formula powder soy-based Infant formula powder milk-based Infant formula RTF milk-based

9 9 9 8

20 20 18 18 20 20 20 20 18

2.83 2.32 3.74 1.41 0.91 3.22 3.73 4.67 1.90

2.83 7.05 6.38 2.90 11.2 7.55 5.63 6.40 3.70

0.44 0.82 0.72 0.35 1.21 0.84 0.64 0.72 0.39

0.147 0.184 0.106 0.035 0.152 0.203 0.237 0.066

0.446 0.314 0.218 0.426 0.357 0.307 0.324 0.128

Infant formula powder partial hydrolyzed milk-based 9 Infant formula powder partial hydrolyzed soy-based 9

Child formula powder Infant elemental powder

9 9 8

Infant formula RTF milk-based, unfortified a  Data reported as mg/kg powder.