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Turmeric survey: final report

Annex 3: Piperine validation data

Annex 3 Piperine validation data tables.

Last updated: 12 September 2023
See all updates
Last updated: 12 September 2023
See all updates

Piperine

Calibration

Details explained in the text.

Recovery and repeatability

Sample Batch 1 concentration (mg/kg) Batch 2 concentration (mg/kg) Batch 3 concentration (mg/kg)
Low spike sample 1 633 766 820
Low spike sample 2 581 743 831
Low spike sample 3 623 702 754
Low spike sample 4 588 741 818
Low spike sample 5 633 738 809
Low spike sample 6 599 702 814
Low spike sample 7 620 688 758
Average 611 726 801
Recovery 68% 81% 89%
Repeatability (RSD) 3.5% 3.9% 3.9%
Medium spike sample 1 16,327 14,128 12,387
Medium spike sample 2 15,272 13,283 12,466
Medium spike sample 3 16,045 11,923 11,436
Medium spike sample 4 15,890 12,224 12,300
Medium spike sample 5 15,569 11,036 12.633
Medium spike sample 6 15,362 10,935 12,868
Medium spike sample 7 16,604 11,152 12,420
Average 15,867 12,097 12,359
Recovery 88% 67% 69%
Repeatability (RSD) 3.1% 10.1% 3.6%

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