*Review* **Biodegradation of Different Types of Bioplastics through Composting—A Recent Trend in Green Recycling**

**Wazir Aitizaz Ahsan <sup>1</sup> , Adnan Hussain <sup>1</sup> , Chitsan Lin 2,3,\* and Minh Ky Nguyen 2,4**


**Abstract:** In recent years, the adoption of sustainable alternatives has become a powerful tool for replacing petroleum-based polymers. As a biodegradable alternative to petroleum-derived plastics, bioplastics are becoming more and more prevalent and have the potential to make a significant contribution to reducing plastic pollution in the environment. Meanwhile, their biodegradation is highly dependent on their environment. The leakage of bioplastics into the environment and their long degradation time frame during waste management processes are becoming major concerns that need further investigation. This review highlights the extent and rate of the biodegradation of bioplastic in composting, soil, and aquatic environments, and examines the biological and environmental factors involved in the process. Furthermore, the review highlights the need for further research on the long-term fate of bioplastics in natural and industrial environments. The roles played by enzymes as biocatalysts and metal compounds as catalysts through composting can help to achieve a sustainable approach to the biodegradation of biopolymers. The knowledge gained in this study will also contribute to the development of policies and assessments for bioplastic waste, as well as provide direction for future bioplastics research and development.

**Keywords:** biopolymers; aerobic composting; sustainability; depolymerization; enzymes
