Assembly of chitosan support matrix with gallic acid-functionalized nanoparticles

LAMARRA, J.; GIANNUZZI, L.; RIVERO, S.; PINOTTI, A.; LAMARRA, J.; GIANNUZZI, L.; RIVERO, S.; PINOTTI, A.

MATERIALS SCIENCE & ENGINEERING. C, BIOMIMETIC MATERIALS, SENSORS AND SYSTEMS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2017 vol. 79 p. 848 - 859

0928-4931

The incorporation of gallic acid (GA) in a direct way or into nanoparticles being included in chitosan edible films appears as a suitable approach to increase its preservation upon adverse conditions. The addition of nanoparticles to chitosan-based matrices resulted in improvements in their solubility, swelling, and mechanical properties. It is worth noting that by means of the nanoencapsulation, the release process can be modulated in relation to the delivery of GA included directly in the matrix, releasing the agent at a lower rate for a longer time. Films containing functionalized nanoparticles are promising as a means to develop tailor-made support matrices for improving both the shelf stability of active compound included and final product quality. From the point of view of the antimicrobial activity, S. aureus ATCC 25923, E. coli ATCC 25922, Salmonella spp. and Candida vinaria exhibited sensitivity to the studied films. The results suggested that active films with nanoparticles could be a potential candidate for the support and controlled release of active compounds such as gallic acid in order to be used for packaging in food preservation.