Copyright information:Taken from "Biosynthesis of Antitumoral and Bactericidal Sanguinarine"Journal of Biomedicine and Biotechnology 2006;2006():-.Published online 1 Mar 2006PMCID:PMC1559923. (1,1′) 3 mg/L of sanguinarine in aqueous medium, slits 5 nm, λ = 283 nm, and λ = 415 nm. (2,2′) 1 mg/L of sanguinarine in ethanol medium, slits 2.5 nm, λ = 283 nm, and λ = 412 nm. In situ excitation (3,4) and emission (3′,4′) spectra of sanguinarine, obtained with the fibre-optic sensor after elution on a silica gel plate. (3,3′) 20 ng and (4,4′) 100 ng of sanguinarine from ethanol and aqueous solutions, respectively. Slits 10 nm, λ = 326 nm, and λ = 545 nm.