Jurema’s Tannin Profile vs. Oak Gall and Walnut Dyes: A Natural Dyer’s Chemistry Comparison
Quick Answer Jurema (Mimosa tenuiflora, also called Jurema Preta or Mimosa Hostilis Root Bark) contains roughly 16% condensed tannins, dominated by proanthocyanidins that produce purples, magentas, and reddish-browns without requiring a metal mordant. Oak gall contains hydrolyzable tannins (mostly gallotannins), which are colorless to pale beige on their own and are prized as a mordanting […]