TITLE:
Development of Active Films with Collagen Fiber and Polyvinyl Alcohol Mixture and Incorporation of Oregano and Rosemary Essential Oils in Their Matrix
AUTHORS:
Suslin Raatz Thiel, Mari Silvia Rodrigues De Oliveira, Vinícius Badia, Stephanie Reis Ribeiro, Roger Wagner, Tatiana Emanuelli, Rosa Cristina Prestes, Renius Mello
KEYWORDS:
Antimicrobial Activity, Biodegradable Packaging, Bioactive Volatile Compounds, Fourier Transformed Infrared Spectroscopy, Scanning Electron Microscopy, Sustainable Packaging
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.14 No.7,
July
24,
2023
ABSTRACT: The aim was to develop films with a new mixture of collagen fiber plus
polyvinyl alcohol added of oregano or rosemary essential oils at different
levels (0%, 2%, 4% and 6%), as well as to assess the antimicrobial activity,
physical, optical, microstructure and molecular properties in the films. An
interaction between the ingredients was observed at the molecular level by
FTIR. The amide II and amide III bands, which are important to verify collagen
conformation, showed intense peaks in the films. The formation of a network
through collagen fibers was produced, acting as a reinforcement in matrix. The
films with essential oil had an expressive antimicrobial activity by the steam
contact method (micro-atmosphere), mainly for Escherichia coli and Staphylococcus aureus. The mixture of collagen fiber plus polyvinyl alcohol added
of essential oils is a promising matrix for application in food as active
packaging.