Oligopeptide-based molecular labelling of (bio)degradable polyester biomaterials

Area of Science:

• Materials Science
• Polymer Chemistry
• Biotechnology

Background:

• Growing demand for environmentally friendly functional materials in the medical sector.
• Interest in labeling biodegradable polymers for tracking their environmental fate.
• Need for methods to store information within polymer matrices.

Purpose of the Study:

• To develop a green approach for information storage in biodegradable polymers.
• To encode production year data into poly(l-lactide) (PLLA) and poly(1,4-butylene adipate-co-1,4-butylene terephthalate)/polylactide (PBAT/PLA) films using oligopeptides.
• To assess the stability and retrievability of stored information before and after biodegradation.

Main Methods:

• Incorporation of oligopeptides (PEP) into PLLA and PBAT/PLA polymer films.
• Encoding binary information (production year) as amino acid sequences within the oligopeptide.
• Decoding information using mass spectrometry.
• Investigating film properties and stability during industrial composting.
• Conducting MTT assays with MRC-5 mammalian fibroblasts.

Main Results:

• Successful encoding and decoding of production year information in polymer films.
• Oligopeptide stability demonstrated, allowing information retrieval before and after biodegradation.
• Characterization of labeled biodegradable polymer films.
• Initial MTT study on PLLA and PLLA/PBAT using mammalian fibroblasts.

Conclusions:

• A straightforward green method for information storage in biodegradable polymers was established.
• The oligopeptide-based system allows for durable information encoding and retrieval.
• The developed materials show promise for applications requiring traceability and environmental monitoring.