3.3. Levels of total tannins
For total tannins, we note that the content in the leaf is 21.523 ± 0.108 mg GAE/g dry matters. Literature
references about total tannins of leaf were not found. The low tannin content in this fraction gives the plant a
good nutritional quality. Indeed, the presence of tannins in foods with high concentrations may decrease the
nutritional value of the food by complexion with proteins [21]. So the importance of Malva sylvestris L. in our
power standpoint protein intake is well noted.