title: Characterization of biopolymers by pyrolysis gas chromatography and multidimensional analysis. Application to synthetic melanins.
abstract: A method for characterization of the melanin biopolymer has been developed and validated by the use of synthetic melanins derived from tyrosine, dopamine or hydroquinone. The technique involved pyrolysis gas-liquid chromatography with capillary columns. A back-flushing technique is described which improves pyrogram reproducibility such that closely related melanins can be distinguished with the aid of principal components analysis and non-metric multidimensional scaling.
mesh_terms: D001704:Biopolymers / Q000032:analysis*; D002849:Chromatography, Gas; D046911:Macromolecular Substances / Q000032:analysis*; D008543:Melanins / Q000032:analysis*; D008954:Models, Biological
chemical_list: D001704:Biopolymers; D046911:Macromolecular Substances; D008543:Melanins