Improvement of water vapor barrier properties of chitosan-collagen laminated casings using beeswax

Hromiš, N. M. and Lazić, V. L. and Šuput, Danijela Z. and Popović, S. Z. and Tomović, V. M.: Improvement of water vapor barrier properties of chitosan-collagen laminated casings using beeswax. Review of faculty of engineering : analecta technica Szegedinensia, (9) 1. pp. 31-38. (2015)

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Abstract

Collagen casings are commercially used in sausage production. In this paper, collagen film that is used for sausage casings was laminated with chitosan film to produce barrier casing film. Chitosan coating was prepared by dissolving chitosan powder in 1% acetic acid. After dissolving chitosan, caraway essential oil, wetting agent Tween 20 and different amounts of beeswax, from 0 to 25 g were added to the solution. The solution was coated on collagen film surface in three layers, using a sponge brush to make laminated films. Films were air dried at temperature t =23 °C ± 2 °C. Uncoated collagen film was used as reference. Film thickness, water vapor barrier properties and FTIR spectra were determined. With growing amount of beeswax added to the chitosan layer, film thickness grew from 112 µm for laminated film with 5 g of beeswax to 225 µm for film with 25 g of beeswax, compared to 83 µm for collagen film. Water vapor barrier properties improved with growing amount of beeswax in chitosan layer, ranging from 130.71 g/m2 24h for laminated film with added 5 g of beeswax to 66.96 g/m2 24h for the film with 25 g of beeswax, compared to 290.64 g/m2 24h for collagen film. Addition of beeswax showed great potential in lowering water vapor permeability of laminated collagen-chitosan film. FTIR spectra could be used to determine quantitative law dependency between added amount of beeswax and spectra absorption values,as well as to prove compactness of chitosan-beeswax layer.

Item Type: Article
Journal or Publication Title: Review of faculty of engineering : analecta technica Szegedinensia
Date: 2015
Volume: 9
Number: 1
Page Range: pp. 31-38
ISSN: 2064-7964
Language: angol
Uncontrolled Keywords: Ehető biofilmek - kitozán, Ehető biofilmek - méhviasz
Additional Information: ill. ; Bibliogr.: p. 37-38. ; összefoglalás angol nyelven
Date Deposited: 2017. Jun. 29. 14:23
Last Modified: 2019. Jan. 03. 13:13
URI: http://acta.bibl.u-szeged.hu/id/eprint/41903

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