Microalgae as Contributors to Produce Biopolymers

Area of Science:

• Biotechnology and Materials Science
• Sustainable Polymers
• Microbial Bioprocessing

Background:

• Biopolymers offer eco-friendly alternatives to fossil-based plastics due to biodegradability and renewability.
• Microalgae and cyanobacteria are promising sources for bioplastic monomers like polyhydroxyalkanoates (PHAs), polysaccharides, and proteins.
• Growing interest in biobased plastics for electronics, medical devices, food packaging, and energy applications.

Purpose of the Study:

• To review the potential of microalgal biopolymers (PHAs, polysaccharides, proteins) for bioplastic production.
• To provide insights into current knowledge and future directions for microalgal-based bioplastics within a circular economy framework.
• To analyze bioplastic monomers, blends, composites, cultivation optimization, and future perspectives.

Main Methods:

• Literature review and analysis of existing research on microalgal biopolymers.
• Examination of bioplastic properties, including monomers, blends, and composites.
• Assessment of microalgae cultivation strategies for enhanced biopolymer accumulation.

Main Results:

• Microalgae are a viable source for producing PHAs, polysaccharides, and proteins suitable for bioplastics.
• Optimization of microalgae cultivation is crucial for maximizing yield and economic viability.
• The review identifies key areas for future research and development in microalgal bioplastics.

Conclusions:

• Microalgae hold significant promise for sustainable bioplastic production, aligning with circular economy principles.
• Further research into cultivation and processing technologies is needed to fully realize microalgal bioplastic potential.
• Microalgal bioplastics can contribute to reducing reliance on fossil fuels and mitigating environmental concerns.