RT Journal Article T1 Pea Protein‑Based Bioplastics Crosslinked with Genipin: Analysis of the Crosslinking Evolution A1 Pérez Puyana, Víctor A1 Cortés Triviño, Esperanza A1 Jiménez Rosado, Mercedes A1 Romero, A. A1 Martinez García, Inmaculada AB Replacing conventional plastics with other products obtained from biobased and biodegradable raw materials is an increasingly studied solution. In this line, the development of protein-based bioplastics is a promising alternative. However, forsome applications, such as packaging it would be necessary to improve their properties by including an additional stage tocrosslink the protein chains during the production of bioplastics. Therefore, pea protein-based bioplastics crosslinked withgenipin, a natural non-toxic chemical crosslinking agent, are evaluated in this study. The bioplastics are obtained via injection moulding and genipin, is included in the initial formulation. Specifcally, the concentration of genipin and the efectson the protein blends with genipin over days are evaluated. The evolution of the reaction is followed by the colour changeof the blend, together with thermal analyses and infrared spectroscopy. Results showed the evolution of the crosslinking inthe blends resulted in conformational changes that resulted in the modifcation of the initial yellowish colour to a blueishsystem. Respect their bioplastics, more deformable systems with a lower water absorption capability are obtained by usinggenipin as crosslinking agent PB Springer SN 1566-2543 SN 1572-8900 (electrónico) YR 2023 FD 2023-07 LK https://hdl.handle.net/10272/23264 UL https://hdl.handle.net/10272/23264 LA eng NO Perez-Puyana, V. M., Cortés-Triviño, E., Jiménez-Rosado, M., Romero, A., & Martínez, I. (2023). Pea Protein-Based Bioplastics Crosslinked with Genipin: Analysis of the Crosslinking Evolution. In Journal of Polymers and the Environment (Vol. 32, Issue 1, pp. 31–44). Springer Science and Business Media LLC. https://doi.org/10.1007/s10924-023-02973-0 NO s This work is a part of a I+D+i PID2021-124294OBC21 project which is sponsored by MCIN/AEI/10.13039/501100011033/and “ERDF A way of making Europe”. The authors thank their fnancialsupport. In addition, the authors would also acknowledge for the postdoctoral contract of Víctor M. Pérez Puyana from the “Contratación dePersonal Investigador Doctor” supported by the European Social Fundand Junta de Andalucía (PAIDI DOCTOR – Convocatoria 2019-2020).Funding for open access publishing: Universidad de Sevilla/CBUA DS Repositorio Institucional de la Universidad de Huelva RD 30 may 2026