Novel, multifunctional mucilage composite films incorporated with cellulose nanofibers. (April 2019)

• Record Type: Journal Article
• Authors: Mujtaba, Muhammad; Akyuz, Lalehan; Koc, Behlul; Kaya, Murat; Ilk, Sedef; Cansaran-Duman, Demet; Martinez, Asier Salaberria; Cakmak, Yavuz S.; Labidi, Jalel; Boufi, Sami
• Is Part Of: Food hydrocolloids. Volume 89(2019)
• Page Start: 20
• Page End: 28
• Publication Date: 2019-04
• Subjects: Mucilage film -- Physicochemical characterization -- Biological assay -- Mechanical properties; Hydrocolloids -- Periodicals; Food additives -- Periodicals; Colloïdes -- Périodiques; Aliments -- Additifs -- Périodiques; Colloids; Food additives; Periodicals; Electronic journals; 664.06
• DOI: 10.1016/j.foodhyd.2018.10.021
• Languages: English
• ISSNs: 0268-005X

Abstract

Abstract: In the current study, mucilage composite films were produced by incorporating the cellulose nanofibrils (CNF) at different concentrations i.e., 3 and 6% to chia mucilage matrix by solution casting method. To evaluate the effect of CNF incorporation into mucilage matrix, the obtained composite films were characterized extensively using both physicochemical and biological tools. FT-IR spectra confirmed the composite formation by broader OH bond peaks than in the spectrum of mucilage control film and shift of CO stretching vibration peak lower wave number and widen in the mucilage films including cellulose nanofibers. Cellulose nanofibers did not reveal a significant effect on the thermal properties of the all three composite films and dynamic thermogravimetric values were recorded as ≃287 °C. Atomic force microscopy revealed a homogenous distribution of cellulose nanofibers across the mucilage matrix. Dynamic mechanical analysis revealed that the inclusion of cellulose nanofibers in mucilage film led to an enhancement of the tensile modulus as well as the tensile strength, but without reducing the strain at break of the film. Cellulose nanofibers incorporation significantly enhanced the hydrophobic properties of the composite films. The cytotoxicity assay results demonstrated mucilage composite films were nontoxic and have anticancer properties; reducing the viability of cancer cell line by ≃ 20% and retaining the cell viability of epithelial cell line by ≃ 90%. Cellulose nanofibers incorporation also significantly enhanced the antioxidant and antimicrobial attributes of the mucilage composite films. Overall, the current study provided an idea regarding the biocompatible, non-toxic, highly antioxidative and antimicrobial biodegradable nature of mucilage-CNF composite films, making it a suitable candidate for food and pharmaceutical industry. Graphical abstract: Highlights: Chia mucilage-CNFs composite films were produced. Films were characterized physichochemically and biologically. Mechanical properties of the film enhanced with CNFs incorporation. High antioxidant and antimicrobial properties were recorded for the composite films. Films were non-toxic and possess antiproleferative properties towards cancer cells.