NMR of human saliva protein/wine tannin complexes. Towards deciphering astringency with physico-chemical tools

This is the authors' abstract. We don't add key points for this paper.

In the present work, we used NMR (chemical shift variations and diffusion measurement) to determine the affinity and the number of sites of four different 4-8 procyanidin dimers for a model PRP peptide. A number of three binding sites has been identified for every tannin, but significant affinity differences are highlighted from one to another dimer (a factor 10 approximately) that could be related to their specific 3D-structure.