Evaluation of mechanical, antimicrobial and water resistance properties of myofibrillar protein-cellulose nanofiber blend nanocomposite incorporated with Oregano essential oil

Document Type : scientific research article

Abstract

In this study, bionanocomposite of myofibrillar protein-nanofibrillated cellulose (0.4 wt%) developed. In order to improve antimicrobial properties and reduce its sensitivity to water, different concentrations (1/5 and 2%) Oregano essential oil added in the biopolymer matrix. In this regard, physical, mechanical, optical properties and antimicrobial activity of different films were investigated. The presence of essential oils in biopolymer matrix reduced mechanical stability (p<0.05). Although with the addition of oil permeability to water vapor showed increased in activation films, but these films were presented far lower solubility and swelling than nanocomposite film (p<0.05). Increase the contact angle and decrease of moisture content of the active films also represents an increase of hydrophobic properties and resistance to water them. Assessment microbial properties of various films also showed that the active films containing both oil concentration exhibited acceptable antimicrobial properties against three strains of bacteria E.coli, S.aureus and B.subitilis.

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