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Updated: Jan 28, 2026

Turbidimetry on Human Washed Platelets: The Effect of the Pannexin1-inhibitor Brilliant Blue FCF on Collagen-induced Aggregation
Published on: April 6, 2017
Depletion of Brilliant Blue F.C.F. and Penicillin G in Milk from Treated Cows
A Vilim1, L Larocque1, A Macintosh1
1Drug Research Laboratories, Health Protection Branch, Health and Welfare Canada, Ottawa, Ontario K1A 0L2, Canada.
Abstract:
A field trial was set up to compare depletion of Brilliant Blue F.C.F. and penicillin following three infusions of Vetspen cerate 100 into six healthly lactating cows. The presence of dye was noted by milk color at the time of milking, and by the ion exchange resin method in the laboratory. Penicillin residues were determined by a diffusion agar plate microbiological method and by Delvotest-P. Dye extinction times were found to be significantly longer than penicillin extinction times (0.05 level of significance). The proportion of cows requiring more milkings for penicillin extinction than for dye extinction was estimated to be 0.17.
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