This research work aims to transform and study the physico-chemical properties of leaf-based agro-materials of Musa sapientum and Tectona grands species. Indeed, the latter are traditionally used as a food packaging medium in West Africa and Benin in particular. The analysis by phytochemical screening of the main chemical groups present at the level of the leaves reveals the presence of molecules of interest, namely: flavonoids; catechol tannins and anthocyanins. The latter are indeed recognized for their pharmacological benefits. In addition, leuco anthocyanins and gallic tannins are only present in Tectona grandma leaves. To produce biofilms based on the leaf species studied, a Box-Doehlert experimental design was carried out. Fifteen (15) formulations were thus made, varying the leaf, starch, and glycerin contents of the mixture. It has been observed that, for low water sensitivity (0.1471) and low thickness (0.0573mm) of bioplastics, 1g of leaves are required; 6g of starch and 4.23mL of glycerin for the leaf of Tectona grandis while for that of Musa sapientum (low thickness: 0.0617mm, low sensitivity to water: 0.3466), it takes: 1.74g of leaf; 6g of starch and 2.5mL of glycerin.