Antioxidant and antimicrobial films based on brewers spent grain arabinoxylans, nanocellulose and feruloylated compounds for active packaging
authors Moreirinha, C; Vilela, C; Silva, NHCS; Pinto, RJB; Almeida, A; Rocha, MAM; Coelho, E; Coimbra, MA; Silvestre, AJD; Freire, CSR
nationality International
journal FOOD HYDROCOLLOIDS
author keywords Arabinoxylans; Brewers' spent grain; Nanofibrillated cellulose; Feruloylated compounds; Nanocomposite films; Active food packaging
keywords FOOD; ANTIBACTERIAL; EXTRACTION; BEHAVIOR; WATER
abstract In this study, brewers spent grain (BSG) arabinoxylans-based nanocomposite films were prepared by solvent casting of arabinoxylans (AX) suspensions containing different amounts of nanofibrillated cellulose (NFC, 5, 10, 25, 50 and 75% mass fraction). The obtained nanocomposite films were homogeneous and presented thermal stability up to 230 degrees C and good mechanical properties (Young's modulus up to 7.5 GPa). Additionally, the films with 50% NFC were loaded with ferulic acid or feruloylated arabinoxylo-oligosaccharides enriched fraction from BSG (75 mg per g of film). This combination enhanced the UV-Vis barrier properties and imparted additional functionalities to the films, namely (i) antioxidant activity up to 90% (DPPH scavenging activity), (ii) antibacterial activity against Gram-positive (Staphylococcus aureus) and Gram-negative (Escherichia coli) bacteria, and (iii) antifungal activity towards the polymorphic fungus Candida albicans. Therefore, these fully biobased nanocomposite films show potential for application as active food packaging systems.
publisher ELSEVIER SCI LTD
issn 0268-005X
isbn 1873-7137
year published 2020
volume 108
digital object identifier (doi) 10.1016/j.foodhyd.2020.105836
web of science category Chemistry, Applied; Food Science & Technology
subject category Chemistry; Food Science & Technology
unique article identifier WOS:000565531600004
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journal analysis (jcr 2019):
journal impact factor 7.053
5 year journal impact factor 7.077
category normalized journal impact factor percentile 95.917
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