title: Pomegranate peel pectin films as affected by montmorillonite.
abstract: The industrial production of pomegranate juice has been favored by its alleged health benefits derived from its antioxidant properties. The processing of pomegranate juice involves squeezing juice from the fruit with the seeds and the peels together, leaving a pomace consisting of approximately 73 wt% peels. In this study, pectin was extracted from pomegranate peels, and used to produce films with different contents of montmorillonite (MMT) as a nanoreinforcement material. The nanoreinforcement improved the tensile strength and modulus of films when added at up to 6 wt%, while the further addition of MMT (to 8 wt%) reduced the reinforcement effect, probably because of dispersion problems. The elongation was decreased with increasing MMT concentrations. The water vapor permeability decreased with increasing MMT contents up to 8 wt% MMT, indicating that the increased tortuosity of the permeant path was effective on barrier properties of the film.
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK. Electronic address: tulioufc@gmail.com.
authors.forename: Túlio Ítalo S
authors.initials: TÍ
authors.lastname: Oliveira
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK. Electronic address: b12zerem@uco.es.
authors.forename: Luna
authors.initials: L
authors.lastname: Zea-Redondo
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK.
authors.forename: Graham K
authors.initials: GK
authors.lastname: Moates
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK.
authors.forename: Nikolaus
authors.initials: N
authors.lastname: Wellner
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK.
authors.forename: Kathryn
authors.initials: K
authors.lastname: Cross
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK.
authors.forename: Keith W
authors.initials: KW
authors.lastname: Waldron
authors.affiliation: Institute of Food Research, Norwich Research Park, Colney, Norwich NR4 7UA, UK. Electronic address: henriette.azeredo@embrapa.br.
authors.forename: Henriette M C
authors.initials: HM
authors.lastname: Azeredo
mesh_terms: D000975:Antioxidants; D001546:Bentonite / Q000737:chemistry*; D001704:Biopolymers; D018857:Food Packaging; D005638:Fruit / Q000737:chemistry*; D029561:Lythraceae / Q000737:chemistry*; D053761:Nanocomposites; D010368:Pectins / Q000737:chemistry*; D010539:Permeability; D011134:Polysaccharides
chemical_list: D000975:Antioxidants; D001704:Biopolymers; D011134:Polysaccharides; D001546:Bentonite; D010368:Pectins
keywords: Biopolymers; Edible films; Food packaging; Nanoclays; Polysaccharides