Antifungal films based on starch-gelatin blend, containing essential oils

Antifungal films based on starch-gelatin blend, containing essential oils The antimicrobial activity of essential oils (EO) is very well-known and it has been reported that incorporating them into edible films based on biopolymers extends the food’s shelf-life. In this study, cinnamon, clove and oregano EO, at 25% with respect to the polymer, were incorporated into glycerol plasticized starch-gelatin blend films (ratio 1:1) in order to elucidate their effect on the physical (barrier, mechanical and optical), structural and antifungal properties of the films. Whereas EOs exhibited no significant effect on tensile behavior in the case of casting films conditioned at 53% relative humidity and 25° C, the EO compounds did significantly reduce the water vapor and oxygen permeability of the films. Likewise, the EOs increased the films’ transparency but reduced their gloss. Despite the fact that about 60% of the incorporated EOs were lost during the film drying step, they exhibited antifungal activity against the two tested fungal species, Colletotrichum gloesporoides (CG) and Fusarium oxysporum (FOG), as revealed by the in vitro agar diffusion method. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Food Hydrocolloids Elsevier

Antifungal films based on starch-gelatin blend, containing essential oils

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier Ltd
ISSN
0268-005X
eISSN
1873-7137
D.O.I.
10.1016/j.foodhyd.2016.05.008
Publisher site
See Article on Publisher Site

Abstract

The antimicrobial activity of essential oils (EO) is very well-known and it has been reported that incorporating them into edible films based on biopolymers extends the food’s shelf-life. In this study, cinnamon, clove and oregano EO, at 25% with respect to the polymer, were incorporated into glycerol plasticized starch-gelatin blend films (ratio 1:1) in order to elucidate their effect on the physical (barrier, mechanical and optical), structural and antifungal properties of the films. Whereas EOs exhibited no significant effect on tensile behavior in the case of casting films conditioned at 53% relative humidity and 25° C, the EO compounds did significantly reduce the water vapor and oxygen permeability of the films. Likewise, the EOs increased the films’ transparency but reduced their gloss. Despite the fact that about 60% of the incorporated EOs were lost during the film drying step, they exhibited antifungal activity against the two tested fungal species, Colletotrichum gloesporoides (CG) and Fusarium oxysporum (FOG), as revealed by the in vitro agar diffusion method.

Journal

Food HydrocolloidsElsevier

Published: Dec 1, 2016

References

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