Fuente: Citrus Byproducts Extraction Purpose: This review chapter examines the development of plant-derived biopolymers as sustainable substitutes for petroleum-based plastics. In addition to discussing obstacles to their wider acceptance and industrial use, this study seeks to shed light on the origins of plant-based biopolymers, their developmentDrug development procedures, and current developments in the field. Findings: Biopolymers of plant origin are made from renewable resources, such as wood waste, starchStarch, polyphenols, and agricultural waste. These materials have several advantages over traditional plastics, including biodegradable packagingBiodegradable packaging, bio-reinforcements, and environmentally friendly substitutes. Inverse vulcanization, solvent-free polymerization, and enzymatic catalysis are advanced processing methods that have improved their mechanical and biodegradable qualities. Agricultural byproducts, such as plant proteinsPlant protein and triglycerides, aid in biomedicine, wound healing, and drug administration. The purification effectiveness, product recovery, and yield were enhanced via continuous chromatography, membrane systems, and microfluidics. These biopolymer qualities have been further improved for various applications by using nanofillers. Summary: Plant biopolymers are potentially renewable and sustainable alternatives to petroleum-based plastics. Developing high-performance materials and considerable improvements in processing methods have not eliminated problems with cost-effectiveness, scalability, safety, and allergenicity. Further research is essential to overcome these challenges and guarantee the broad use of plant biopolymers. The performance of these biopolymers can be enhanced by combining cutting-edge processing techniques with nanomaterials, strengthening their use in the manufacturing of sustainable products, and promoting a circular economyCircular economy.