Time-dependent evolution of properties of fish gelatin edible films enriched with carvacrol during storage
| Autor: | Roxana A. Ruseckaite, Laura M. Neira, Nadia Stejskal, Josefa F. Martucci |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Recubrimientos y Películas
Antioxidant food.ingredient General Chemical Engineering medicine.medical_treatment INGENIERÍAS Y TECNOLOGÍAS 01 natural sciences Gelatin PACKAGING chemistry.chemical_compound Minimum inhibitory concentration 0404 agricultural biotechnology food ANTIOXIDANT Ingeniería de los Materiales 0103 physical sciences Ultimate tensile strength ANTIBACTERIAL medicine Glycerol Carvacrol Food science Water content 010304 chemical physics Moisture 04 agricultural and veterinary sciences General Chemistry 040401 food science FISH GELATIN chemistry CARVACROL STORAGE Food Science |
| Zdroj: | Food Hydrocolloids. 94:304-310 |
| ISSN: | 0268-005X |
| DOI: | 10.1016/j.foodhyd.2019.03.020 |
| Popis: | The temporal stability of the physicochemical, antibacterial and antioxidant properties of fish gelatin (FG) films plasticized by glycerol (20% w/w) and supplemented with carvacrol (CRV) obtained by casting and stored at 65% RH and 25 °C, was investigated over 15 days. The level of CRV incorporated into FG film was determined from minimum inhibitory concentration (MIC) values against E. coli and S. aureus. The incorporation of 0.6% w/v CRV reduced the moisture content (MC), and water vapor permeability (WVP) while kept invariable the tensile and light barrier properties, compared to the control. Additionally, CRV increased the in vitro antibacterial and antioxidant effectiveness of films. Upon storage, the sustained loss of moisture and glycerol provoked the drop of MC and WVP values of both films. Control film became stiffer and less stretchable while the active film remained mechanically time-stable. Such difference was ascribed to the increased contribution of triple helical structures in the control, as revealed by ATR-FTIR and XRD. Antibacterial effectiveness (based on disc diffusion assay) decayed from 3.1 ± 0.1 and 2.7 ± 0.3 cm for E. coli and S. aureus, respectively, to undetectable levels for both pathogens. Antioxidant power in terms of radical scavenging activity (RSA) declined to about 2.74 % of the initial value, in line with the decline of CRV level up to 13 % of its initial concentration. Overall this study proves the significance of assessing the stability of the properties of edible films before proposing any technical application. Fil: Neira Hazime, Laura Margarita. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Martucci, Josefa Fabiana. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Stejskal, Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina Fil: Ruseckaite, Roxana Alejandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina |
| Databáze: | OpenAIRE |
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