title: Evaluation of the antibacterial and antioxidant activities of chitosan edible films incorporated with organic essential oils obtained from fourThymusspecies.
abstract: The aims of this study were to evaluate, (1) the antibacterial properties, (2) the total phenol content and (3) the antioxidant activity, of chitosan edible films incorporated with certified organic essential oils (EOs) obtained fromThymus zygis,Thymus mastichina,Thymus capitatusandThymus vulgaris. The agar disc diffusion method was used to determine the antibacterial activities of chitosan edible films while for the antioxidant activity, two different analytical assays were used (DPPH and FRAP). As regard antibacterial activity, films containing only chitosan were not effective against any of tested bacteria. Chitosan films containingT. capitatusEO (CH + TCEO) was more effective againstListeria innocuaandAlcaligenes faecaliswhilst chitosan films containingT. mastichinaEO (CH + TMEO) had the highest inhibition halos againstSerratia marcescens. For andEnterobacter amnigenusno antibacterial activity was achieved. Chitosan films added withThymusessential oils showed antioxidant activity, at all concentrations and with all methods assayed. CH + TZEO had the highest antioxidant activity revealed with DPPH assay. However in CH + TCEO showed best antioxidant effect when assessed with FRAP assay. The results showed that chitosan edible films incorporated with organicThymusEOs could be used as active films in food industry due to its antibacterial and antioxidant activities.
authors: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), AgroFood Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Crta, Beniel km. 3,2, 03312 Orihuela, Spain.
authors: Carmen
authors: C
authors: Ballester-Costa
authors: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), AgroFood Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Crta, Beniel km. 3,2, 03312 Orihuela, Spain.
authors: Esther
authors: E
authors: Sendra
authors: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), AgroFood Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Crta, Beniel km. 3,2, 03312 Orihuela, Spain.
authors: Juana
authors: J
authors: Fernández-López
authors: IPOA Research Group (UMH-1 and REVIV-Generalitat Valenciana), AgroFood Technology Department, Escuela Politécnica Superior de Orihuela, Miguel Hernández University, Crta, Beniel km. 3,2, 03312 Orihuela, Spain.
authors: Manuel
authors: M
authors: Viuda-Martos
keywords: Antibacterial; Antioxidant; Chitosan films; Essential oils; Thymus