Tannin structural elucidation and quantitative ³¹P NMR analysis. 1. Model compounds.

  title={Tannin structural elucidation and quantitative ³¹P NMR analysis. 1. Model compounds.},
  author={Federica Melone and Raffaele Saladino and Heiko Lange and Claudia Crestini},
  journal={Journal of agricultural and food chemistry},
  volume={61 39},
Tannins and flavonoids are secondary metabolites of plants that display a wide array of biological activities. This peculiarity is related to the inhibition of extracellular enzymes that occurs through the complexation of peptides by tannins. Not only the nature of these interactions, but more fundamentally also the structure of these heterogeneous polyphenolic molecules are not completely clear. This first paper describes the development of a new analytical method for the structural… 

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