Species of gall wasps lay their eggs in the branches and twigs of oak trees. When the tree identifies an invasion by a possible parasite, a large knot (also known as a "Gallnut") is formed around the foreign body to isolate it and keep it from doing more damage. Tannic acid is created by the plant in the response mechanism.1 

Tannic acid, a plant-derived molecule extracted from plant parts such as tara pods, gallnuts from Rhus semialata, Quercus infectoria or Sicilian Sumac leaves, is a polyphenol. Polyphenols are naturally occurring compounds, secondary metabolites of plants and are generally involved in defense against ultraviolet radiation or aggression by pathogens.2

Tannic acid extract studies have indicated multiple modes of action to positively impact the health of livestock and poultry. Those include anti-inflammatory, antioxidant, anti-pathogenic and astringent activities.2





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