Figure 2From: Chemical stability study of vitamins thiamine, riboflavin, pyridoxine and ascorbic acid in parenteral nutrition for neonatal use Specificity of the vitamin B 2 assay. Fluorescence emission spectra of PN without (A) and with the standard vitamins B2 (B) with a range of emission wavelength between 400-700 nm and excitation at 360 nm.Back to article page