Smart biofilms produced from fish filleting wastes

The myofibrillar proteins utilization from fish processing wastes to produce films has an importance to decrease the environmental impact due to usual inappropriate disposal of these wastes. The aim of this work was to make and characterize biodegradable films developed from myofibrillar proteins of gó whitefish (Macrodon ancylodon) wastes, with anthocyanin addition as a pH change indicator. The material proteic extracted was chacterized presenting high concentration of total proteins (95.01%), important for the development of filmogenic solution. According to the results, there was a significant difference (p < 0.05) between the control and the added with anthocyanin biofilms. The film with lower concentration of anthocyanin presented better barrier property, with water vapor permeability of 3.8 × 1011 g.m1.s1.Pa1. There is a great potential for fish processing wastes utilization to obtain biodegradable films even as the anthocyanin pigment powder is promising to act as pH indicator.This work was financially supported by Project POCI-01–0145-FEDER-007457, funded by FEDER funds through “COMPETE 2020 – Programa Operacional Competitividade e Internacionalização” (POCI) and by national funds through “FCT—Fundação para a Ciência e a Tecnologia”. J.R. Carneiro would also like to thank “FCT” for the research grant SFRH/ BPD/88730/ 2012 (grant supported by POPH/POCH/FSE funding).