Fig. 3
a–c Deconvolution of DSC denaturation multi-component peaks for some of the investigated historical leather objects illustrating the distribution of collagen populations with distinct thermal stability and their allocation to the leather-like (L), parchment-like (P) and gelatine-like (G) intervals (see text). d Denaturation endotherms characterised by a main peak indicating the prevalence of one collagen population