New biodegradable film produced from cocoa shell nanofibrils containing bioactive compounds / Ozana Almeida Leissa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 6 (11/2021) . - p. 1613-1624 Titre : New biodegradable film produced from cocoa shell nanofibrils containing bioactive compounds Type de document : texte imprimé Auteurs : Ozana Almeida Leissa, Auteur ; Iasnaia Maria de Carvalho Tavares, Auteur ; Lucas Oliveira Souza, Auteur ; Lucas Galhardo Pimenta Tienne, Auteur ; Matheus Cordazzo Dias, Auteur ; Gustavo Henrique Denzin Tonoli, Auteur ; Eduardo Valério de Barros Vilas Boas, Auteur ; Selma Gomes Ferreira Leite, Auteur ; Melissa Limoeiro Estrada Gutarra, Auteur ; Muhammad Bilal, Auteur ; Marcelo Franco, Auteur Année de publication : 2021 Article en page(s) : p. 1613-1624 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antioxydants Biopolymères Cacaoyer et constituants Caractérisation Cellulose La cellulose est un glucide constitué d'une chaîne linéaire de molécules de D-Glucose (entre 200 et 14 000) et principal constituant des végétaux et en particulier de la paroi de leurs cellules. Couches minces Couches minces -- Propriétés mécaniques Couches minces -- Propriétés thermiques Microfibres Morphologie (matériaux) Nanoparticules Perméabilité Solubilité Statistique Vapeur d'eau Index. décimale : 667.9 Revêtements et enduits Résumé : Cellulosic nanofibrils from cocoa shells were used in this study to produce biodegradable films from a residue naturally rich in bioactive compounds, while reserving these compounds. The nanofibrils were obtained by mechanical defibrillation without chemical or enzymatic pretreatment. The nanofibril gel was evaluated in biodegradable films, for the first time, with the addition of glycerol as a plasticizer in the proportions of 0, 1, 3, 5, and 7% (w/w). The morphological characteristics, thermal analysis, mechanical properties (rupture tensile, maximum rupture elongation, and Young’s modulus), water vapor permeability, and water solubility of the films were investigated. In addition, the residue was analyzed and compared to the films by the FTIR technique to prove the maintenance of functional groups characteristic of antioxidant activity. The use of 3% and 5% glycerol as a plasticizer showed the best mechanical characteristics—reduced water vapor permeation and increased degradation in water. The pure nanofibril film demonstrated greater thermal stability. It was possible to identify the maintenance of aromatic groups and phenols in the residue from all cocoa shell nanofibril films. This study contributes to the future application of cocoa shell nanofibers in the production of edible films, coatings, and packaging materials. It recommends their application in cocoa and chocolate products due to the compatibility of smell and color. Note de contenu : - MATERIALS AND METHODS : Raw material - Preparation of cocoa shell nanofibrils - Production of cocoa shell nanofibril films (CSNF) - Film characterization - Statistical analysis - RESULTS AND DISCUSSION : Characterization of cocoa shell nanofibrils - Appearance and morphology cocoa shell nanofibril films (CSNF) - Chemical composition of the cocoa shell (CS) and cocoa shell nanofibril films (CSNF) - Structure of the CSNF - Thermal performance of films - Mechanical properties - Water vapor permeability - Solubility in water - Table 1 : Water vapor permeability and mechanical properties of nanofibrils films DOI : https://doi.org/10.1007/s11998-021-00519-4-w En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00519-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36820 [article]

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