Preparation and Characterization of Antimicrobial Films Based on Chitosan for Active Food Packaging Applications

Abstract

The aim of this paper was to characterize chitosan samples from the shrimp shells for the later development of antimicrobial active systems. These systems include 100 %\ud chitosan-based films obtained by casting, polyamide films with 5 and 10% of chitosan obtained by extrusion and\ud polyethylene/polyethylene terephthalate films with a coating\ud of 0.6 % of chitosan. For that purpose, several analytical\ud techniques including IR, 1H NMR, GPC, and microscopic\ud techniques (scanning electron microscopy and transmission\ud electron microscopy) were used. Within the studied samples, C1 showed the lowest DA and MW and consequently presented the most suitable properties for the development of an active packaging. Additionally, mechanical properties were performed. The effectiveness of the developed systems was evaluated by means of microbiological assays. The tested films showed antimicrobial capacity against coliform enterobacteria, mesophilic aerobic microorganism, and yeast\ud and moulds

Antimicrobial Films Based on Chitosan and Methylcellulose Containing Natamycin for Active Packaging Applications

“…Elaboration of these films and coatings has been possible thanks to the filmogenic capacity of natural biopolymers, which have a good aptitude for forming a continuous and cohesive matrix with adequate mechanical properties [10,11]. Chitosan is a natural weak cationic polysaccharide, derived from deacetylation of chitin, which is the major component of the shells of crustaceans such as crab, shrimp, and crawfish [2,12]. It is non-toxic, biodegradable, biofunctional, and biocompatible [13,14].…”

Preparation of antioxidant active films based on chitosan: diffusivity study of α-tocopherol into food simulants

“…Different polymeric matrices have been investigated for this purpose, including chitosan, poly(lactic acid) (PLA), poly-e-caprolactone (PCL), and so on (Manzanarez-López et al 2011;Siracusa et al 2008;Lago et al 2014). Chitosan, a linear polysaccharide of (1-4)-linked 2-amino-deoxy-b-D-glucan, is obtained by partial deacetylation of chitin.…”

“…Chitosan, a linear polysaccharide of (1-4)-linked 2-amino-deoxy-b-D-glucan, is obtained by partial deacetylation of chitin. Biodegradability, biocompatibility, antimicrobial activity, non-toxicity and versatile physicochemical properties make chitosan useful in a variety of fields, such as cosmetics, biomedicine, pharmaceutical technology and food packaging (Lago et al 2014). Edible and gas-permeable film packaging can be prepared by a cast/solvent evaporation method, just dissolving chitosan in acid solutions followed by solvent evaporation (Blanco-Fernandez et al 2013;Aider 2010;).…”

Properties of novel chitosan incorporated with hexahydro‐β‐acids edible films and its effect on shelf life of pork

“…Materials used to form films or coatings are usually rich in polysaccharides such as starch (Medina Jaramillo, Gutiérrez, Goyanes, Bernal, & Famá, 2016), carboxymethyl cellulose (Martelli et al., 2017), and chitosan (CH) (Azevedo et al., 2014; Mohamed, Clementine, Didier, Gérard, & Marie Noëlle, 2013), and proteins such as whey protein (Seydim & Sarikus, 2006), soy protein isolate (Emiroğlu, Yemiş, Coşkun, & Candoğan, 2010), gelatin (Podshivalov, Zakharova, Glazacheva, & Uspenskaya, 2017) and lipids, including waxes (Singh et al., 2016), and so on. Among these, CH is widely used to prepare edible antibacterial films due to its biocompatibility, biodegradation, and excellent film‐forming properties (Genskowsky et al., 2015) as well as antibacterial activity against bacteria and fungi (Lago et al., 2014; Mohamed et al., 2013; Souza et al., 2015). CH, a linear polysaccharide (poly‐glucose‐acetylamino), is a natural nontoxic biopolymer produced by partial or total de‐N‐acetylation of chitin, which is derived from the shells of shrimps and crab.…”