INVESTIGADORES
MARTUCCI josefa Fabiana
congresos y reuniones científicas
Título:
Grafting gallic acid onto gelatin. Chemical and enzymatic method
Autor/es:
L.M. NEIRA; R.A. RUSECKAITE; E.CONTRERAS; J. F. MARTUCCI
Lugar:
MAR DEL PLATA
Reunión:
Simposio; XVI Simposio Latinoamericano de Polimeros (SLAP2018); 2018
Institución organizadora:
INTEMA-CONICET
Resumen:
Natural biopolymers with antioxidant activity have a huge potential in the field of active packaging. Bovine Gelatin (BG) is a water soluble protein classified as ?Generally Recognized as Safe? by the U.S. Food and Drug Administration, with excellent film-forming ability by different processing methods, abundance and biodegradability1. However, BG has poor (or none) intrinsic antioxidant activity. Therefore, active compounds (AC) are usually added to the formulations to provide antioxidant power. The main disadvantage of this strategy is that the AC is only maintained in the film structure by secondary interactions, thus its migration onto the packed food over time is inevitable2. An interesting alternative is to covalently graft the AC onto gelatin structure to produce films with predictable antioxidant activity. The grafting can be performed by chemical3 or enzymatic modification4. The aim of this work is to compare the efficiency of grafting gallic acid (GA) with recognized antioxidant activity onto BG through a green chemical path by using a redox pair3 and enzymatic synthesis using a peroxidase (Ep), both under mild conditions.