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Arrowroot starch-based films incorporated with a carnauba wax nanoemulsion,cellulose nanocrystals,and essential oils: a new functional material for food packaging applications |
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| Authors: | de Oliveira Filho Josemar Gonçalves Albiero Beatriz Regina Cipriano Lavínia de Oliveira Nobre Bezerra Carmen Cris Oldoni Fernanda Campos Alencar Egea Mariana Buranelo de Azeredo Henriette Monteiro Cordeiro Ferreira Marcos David |
| Affiliation: | 1.School of Pharmaceutical Sciences, S?o Paulo State University (UNESP), Rod. Araraquara-Jaú Km 1 – Machados, Araraquara, S?o Paulo, Brazil ;2.S?o Carlos Institute of Chemistry (IQSC), University of S?o Paulo (USP), S?o Carlos, Brazil ;3.Department of Biology, Federal University of S?o Carlos, S?o Carlos, Brazil ;4.Goiano Federal Institute of Education, Science and Technology, Campus Rio Verde, Rio Verde, Brazil ;5.Brazilian Agricultural Research Corporation, Embrapa Agroindústria Tropical, Fortaleza, Brazil ;6.Brazilian Agricultural Research Corporation, Embrapa Instrumenta??o, S?o Carlos, Brazil ; |
| Abstract: | Arrowroot starch (AA)-based films incorporated with a carnauba wax nanoemulsion (CWN), cellulose nanocrystals (CNCs), and essential oils (EOs) from Mentha spicata (MEO) and Cymbopogon martinii (CEO) were produced using the casting technique and then characterized in terms of their water barrier, tensile, thermal, optical, and microstructural properties and in vitro antifungal activity against Rhizopus stolonifer and Botrytis cinerea. Whereas the incorporation of CNCs decreased the moisture content and water vapor permeability of the AA/CWN/CNC film, the additional incorporation of either EO decreased the transparency and affected the microstructure of the AA/CWN/CNC/EO nanocomposites. MEO and CEO incorporation improved the thermal stability of the films and provided excellent protection against fruit-spoiling fungi. Because of their excellent barrier properties against fungal growth, water vapor permeability, and ultraviolet and visible light, these AA/CWN/CNC/EO films have promising potential for application as active food packaging or coating materials. Graphic abstract |
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