Fig. 3From: An improved butanol-HCl assay for quantification of water-soluble, acetone:methanol-soluble, and insoluble proanthocyanidins (condensed tannins)Quantification of soluble and insoluble condensed tannin using hammer-milled or liquid N2-pulverized samples. Each column represents an individual assay on a unique litter sample, from a larger-scale litter decay study; p > 0.05, ANOVA or Kruskal–Wallis H-test depending on data normalityBack to article page