Do grains contain tannin

Grains generally contain low levels of tannins, which are polyphenolic compounds found in various plants. While some grains, such as sorghum and millet, may have higher tannin content, most common grains like wheat, rice, and corn have minimal tannins. Tannins can affect the nutritional quality of grains by reducing the bioavailability of certain nutrients. However, the overall impact of tannins in grains is typically less significant compared to their presence in legumes or certain fruits and vegetables.