Synthesis of Renewable and Cost-Effective Bioplastic from Apple Waste: Physicochemical and Biodegradability Studies

The production and disposal of plastics have become a major global concern owing to its non-biodegradable properties in the environment. The recycling of apple biowaste as a value-added bioplastic precursor offers a solution to this waste disposal issue. In this study, readily available apple waste was converted into bioplastic through the delignification of cellulose cum reinforcement by nanocrystalline cellulose (NCC) extracted from the biowaste. The results indicated that the inclusion of apple waste and delignification effect had improved the bioplastic storage modulus (0.42–4.23 MPa) and brittleness in terms of hardness (5.22–0.51 kg). Morphological analysis revealed that the NCC had an average size of 70 nm and was homogeneously blended within the bioplastic matrix. The integration of the apple waste into the bioplastic promoted biodegradability, evident from the maximum weight loss of 58.1% after 4 weeks of biodegradation test, thus presenting a novel and alternative biodegradable plastic. The obtained results support apple waste as a potential filler for bioplastic development in food packaging, medical implants, 3D printing and water bottles. Graphical Abstract: [Figure not available: see fulltext.]