Petroleum derived conventional packaging raises environmental concerns that have prompted researchers to seek alternatives for decades. The primary solution to replace petroleum based packaging lies in biodegradable packaging that can naturally decompose in soil, water, and or the environment. This research primarily aims to enhance the shelf life, biodegradability, and mechanical flexibility of corn starch films by incorporating glycerol as a plasticiser and alumina Al2O3 reinforced nanoparticles. Analytical characterisations indicate that successfully introducing glycerol and Al2O3 nanoparticles into the crosslink of corn starch significantly improved optical transmission and reduced the intensity of the hydroxyl group. This modified packaging has enhanced the mechanical and physical properties tensile strength, water vapour transmission rate WVTR, contact angle CA, and water solubility WS of the starch alumina glycerol film.