5. AOACSPDSMethods-2018AwardsV3

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K line et al .: J ournal of AOAC I nternational V ol . 100, N o . 3, 2017  7

Table 5. Accuracy test for aloin A in aloe concentrate

Table 8. Accuracy test for aloin A in aloe powder

Expected amount of aloin A, ppb

Expected amount of aloin A, ppb

Aloin A found, ppb

Avg. recovery, %

Aloin A added, ng

Aloin A found, ppb

Avg. recovery, %

Spike level, ppb

Sample wt, g

Aloin A added, ng

Recovery, %

Spike level, ppb

Sample wt, g

Recovery, %

10

1.0066 11.07 11.00 9.17 83.4 82.9 1.0229 11.07 10.82 9.28 85.7 1.0294 11.07 10.75 8.57 79.7 1.0060 22.14 22.01 18.96 86.2 86.7 1.0205 22.14 21.70 19.02 87.7 1.0256 22.14 21.59 18.64 86.3 1.0164 33.21 32.67 29.13 89.2 88.1 1.0228 33.21 32.47 28.13 86.6 1.0014 33.21 33.16 29.31 88.4

10

0.5046 5.535 10.97 11.07 100.9 100.1 0.5087 5.535 10.88 9.74 89.5 0.5105 5.535 10.84 11.93 110.0 0.5194 11.07 21.31 18.88 88.6 85.1 0.5059 11.07 21.88 18.45 84.3 0.5059 11.07 21.88 18.04 82.4 0.5134 16.61 32.34 26.01 80.4 84.5 0.5106 16.61 32.52 26.90 82.7 0.5018 16.61 33.09 29.89 90.3

20

20

30

30

Table 6. Accuracy test for aloin B in aloe concentrate

Table 9. Accuracy test for aloin B in aloe powder

Expected amount of aloin B, ppb

Expected amount of aloin B, ppb

Aloin B added, ng

Aloin B added, ng

Aloin B found, ppb

Aloin B found, ppb

Avg. recovery, %

Avg. recovery, %

Spike level, ppb

Sample wt, g

Spike level, ppb

Sample wt, g

Recovery, %

Recovery, %

10

1.0066 10.23 10.16 8.31 81.8 87.1 1.0229 10.23 10.00 8.99 89.9 1.0294 10.23 9.94 8.90 89.6 1.0060 20.46 20.34 19.14 94.1 89.5 1.0205 20.46 20.05 18.19 90.7 1.0256 20.46 19.95 16.68 83.6 1.0164 30.69 30.19 25.15 83.3 86.1 1.0228 30.69 30.01 25.34 84.5 1.0014 30.69 30.65 27.71 90.4

10

0.5046 5.115 10.14 9.56 94.3 89.1 0.5087 5.115 10.06 9.06 90.1 0.5105 5.115 10.02 8.31 82.9 0.5194 10.23 19.70 15.86 80.5 85.5 0.5059 10.23 20.22 18.96 93.8 0.5059 10.23 20.22 16.60 82.1 0.5134 15.35 29.89 25.95 86.8 88.1 0.5106 15.35 30.05 26.34 87.6 0.5018 15.35 30.58 27.48 89.9

20

20

30

30

Table 7. Accuracy test for aloe-emodin in aloe concentrate

Table 10. Accuracy test for aloe-emodin in aloe powder

Expected amount of aloe- emodin, ppb

Aloe- emodin found, ppb

Expected amount of aloe- emodin, ppb

Spike level, ppb

Avg. recovery, %

Aloe- emodin added, ng

Aloe- emodin found, ppb

Sample wt, g

Aloe-emodin added, ng

Recovery, %

Avg. recovery, %

Spike level, ppb

Sample wt, g

Recovery, %

10

1.0066 11.14

11.07 11.05 99.8 99.1

10

0.5046 5.570 11.04 11.72 106.2 109.1 0.5087 5.570 10.95 12.14 110.9 0.5105 5.570 10.91 12.04 110.3 0.5194 11.14 21.45 20.08 93.6 95.6 0.5059 11.14 22.02 21.28 96.6 0.5059 11.14 22.02 21.29 96.7 0.5134 16.71 32.55 30.49 93.7 94.9 0.5106 16.71 32.73 31.02 94.8 0.5018 16.71 33.30 32.01 96.1

1.0229 11.14

10.89 10.57 97.1

1.0294 11.14

10.82 10.85 100.3

20

1.0060 22.28 22.15 21.25 95.9 95.0 1.0205 22.28 21.83 20.27 92.8 1.0256 22.28 21.72 20.94 96.4 1.0164 33.42 32.88 31.29 95.2 94.2 1.0228 33.42 32.68 30.38 93.0 1.0014 33.42 33.37 31.55 94.5

20

30

30