%0 Journal Article
%T An improved butanol-HCl assay for quantification of water-soluble, acetone:methanol-soluble, and insoluble proanthocyanidins (condensed tannins)
%A C. Peter Constabel
%A J. A. Trofymow
%A Philip-Edouard Shay
%J Archive of "Plant Methods".
%D 2017
%R 10.1186/s13007-017-0213-3
%X Flow diagram of solvent and reagent concentrations during assay preparation. Solutions are listed in the order in which they are added for assaying total-soluble, water-soluble or insoluble (or total) condensed tannins. Respective volumes used are also listed to clarify changes in concentrations. All listed ratios represent v/v and concentrated HCl (~12 N). The iron reagent was 2% w/v NH4Fe(SO4)2 and H2O in 2 N HC
%K Tannin
%K Proanthocyanidins
%K Leaf litter
%K Nitrogen stress
%K Polyphenol
%K Flavonoid
%K Poplar
%K Douglas-fir
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5539752/