RT journal article
T1 Structural Modification of Polymers Functionalized with Mango Leaf Extract by Supercritical Impregnation: Approaching of Further Food and Biomedical Applications
A1 Cejudo Bastante, Cristina
A1 Verano Naranjo, Lidia
A1 Toro-Barrios, Noemí
A1 Pereyra López, Clara María
A1 Mantell Serrano, Casimiro
A1 Casas Cardoso, Lourdes
A2 Ingeniería Química y Tecnología de Alimentos
K1 supercritical impregnation
K1 functionalized polymers
K1 TPU
K1 PETG
K1 mango leaf extract
AB Identifying new polymers from natural resources that can be effectively functionalized can have a substantial impact on biomedical devices and food preservation fields. Some of these polymers would be made of biodegradable, renewable and compostable materials, and present the kind of porosity required to effectively carry active compounds that confer on them the desired properties for their intended applications. Some natural extracts, such as mango leaf extract, have been proven to have high levels of antioxidant, antimicrobial or anti-inflammatory properties, making them good candidates for controlled-release applications. This work intends to investigate the supercritical impregnation of different types of polymers (ABS, PETG, TPU, PC and PCL) with mango leaf extract. The influence of temperature and pressure on the polymers' structure (swelling and foaming processes) and their different behaviors have been analyzed. Thus, TPU and PC experience minimal structural modifications, while PETG, PCL and ABS, on the other hand, suffer quite significant structural changes. TPU and PETG were selected as the representative polymers for each one of these behaviors to delve into mango leaf extract impregnation processes. The bioactive capacity of the extract is present in either impregnated polymer, with 25.7% antioxidant activity by TPU processed at 35 degrees C and 100 bar and 32.9% antioxidant activity by PETG impregnated at 75 degrees C and 400 bar
PB MDPI
SN 2073-4360
YR 2022
FD 2022-06
LK http://hdl.handle.net/10498/27481
UL http://hdl.handle.net/10498/27481
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 12-nov-2026