Practical experience with the use of the DR CALUXÂ® bioassay for ...

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Case: dioxins in Brazilian citrus pulp (1998)
Validation <strong>for</strong> citrus pulp (repeatability)Concentration(pg i-TEQ/kg)undilutedResponse(RLUs)1 2 3 4 5 6 mean ± SD CV (%)0 653 708 742 639 788 935 695 ± 63 9400 940 1018 892 882 1105 1078 913 ± 39 41000 1557 1625 1225 1620 1638 1480 1424 ± 91 62000 1689 1760 1402 1943 1807 1596 1643 ± 138 85x diluted0 47 44 53 47 55 49 49 ± 4 9400 63 49 67 57 64 55 59 ± 7 111000 104 106 133 111 138 124 120 ± 15 122000 175 196 170 162 187 183 179 ± 12 7
Page 1 and 2: Practical experience with the use o
Page 3 and 4: January 2006: Dioxins in recycled f
Page 5 and 6: Food and feed incidentsBrazilian ci
Page 7 and 8: Current use of DR CALUX ®• Test
Page 9 and 10: DR CALUX bioassay: screening assayC
Page 11 and 12: Quantitative approach: calibrationS
Page 13 and 14: JRC: Results chicken feed (n=10)Fee
Page 15 and 16: JRC: Results chicken feed (n=10)Fee
Page 17 and 18: “Recovery”Determined by differe
Page 19 and 20: “Recovery”Determined by differe
Page 21 and 22: Dose-response curves for dioxins an
Page 23 and 24: Role of CALUX-REPs in “recovery
Page 25 and 26: Determination of CALUX-REPs• Diff
Page 27 and 28: When to declare a sample suspected
Page 29 and 30: Target limits, action limits and re
Page 31 and 32: Current limitsProductTolerancelimit
Page 33 and 34: Separation of dioxins and dl-PCBs?
Page 35 and 36: Principle of the screening approach
Page 37 and 38: Adaptation of the screening approac
Page 39 and 40: Feed 5 gram (n=4)2000response (RLUs
Page 41 and 42: Improved clean-up of samples• Fat
Page 43: Conclusions based on incidents and
Page 47 and 48: Screening of citrus pulpGC/MSConten
Page 49 and 50: Future needs• Further internation
Page 51 and 52: AcknowledgementsMy collegues at RIK

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