pH-indicating properties and storage stability of a smart edible film based on nopal-mucilage/gellan gum and red cabbage anthocyanins
| Autor: | Francisco J. Heredia, Cristian Jiménez-Martínez, A. Maciel-Cerda, Luz Georgina Solano-Doblado, B. Gordillo-Arrobas, Gloria Dávila-Ortiz, Liliana Alamilla-Beltrán |
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| Přispěvatelé: | Universidad de Sevilla. Departamento de Nutrición y Bromatología, Toxicología y Medicina Legal |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
chemistry.chemical_classification Red cabbage Color difference General Chemical Engineering 04 agricultural and veterinary sciences Polysaccharide 040401 food science 01 natural sciences Gellan gum food.food Edible films Food packaging chemistry.chemical_compound Nopal mucilage 0404 agricultural biotechnology food chemistry Mucilage Color changes 010608 biotechnology Food science Red cabbage anthocyanins´ differential colorimetry Colorimetry Acidic-basic indicators |
| Zdroj: | Revista Mexicana de Ingeniería Química. 19:363-374 |
| ISSN: | 2395-8472 1665-2738 |
| DOI: | 10.24275/rmiq/alim1583 |
| Popis: | Nopal mucilage is a complex polysaccharide with great potential in the preparation of the films to food packaging. In this work, was develop a smart edible film with pH-indicating capabilities based on nopal mucilage, gellan gum, and red cabbage anthocyanins (70:20 w/w, and 10% respectively). Physical properties, appearance, and colorimetric functionality were characterized to pH range 2.5-5.9. Color stability, measured by CIELAB, was tested with different storage conditions and time and interpreted by differential tristimulus colorimetry. Results showed films whit uniform appearance, flexibility, easy-handling, and excellent color response within the pH range studied. The evolution of color difference (ΔE*ab) confirmed that the colorimetric functionality of films was stable at short storage periods (8 days) under natural conditions of sunlight and oxygen exposure, while a more extended storage period was affected. Results showed that the film is an excellent barrier and presents color changes triggered by pH changes. |
| Databáze: | OpenAIRE |
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