Isolation and characterization of starch from the hump of kepok banana (Musa balbisiana. L) as a precursor of biodegradable polyurethane synthesis

Abstract

Starch from hump (Musa balbisiana L.) was isolated bythe maceration method. Bond characterization and determinationof gelatinization temperature, morphology, and particle size were conducted using Fourier Transform Infrared (FTIR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Differential Scanning Colorimetry (DSC), respectively. This isolation produced starch with a yield of 17.2%, amorphous phase portion 78.8%, particle size of 70 nm, and the starch gelatinization process occurred at 67.5°C. Based on these data, the obtained starch has high potential to be applied as a precursor to synthesize polyurethane biopolymers.