Cellulose nanocrystals from grape pomace and their use for the development of starch-based nanocomposite films

被引：96
|
作者：
de Souza Coelho, Caroline Correa [1 ]
Soares Silva, Raysa Brandao [2 ]
Piler Carvalho, Carlos Wanderlei [3 ]
Rossi, Andre Linhares [4 ]
Teixeira, Jose Antonio [5 ]
Freitas-Silva, Otniel [3 ]
Correa Cabral, Lourdes Maria [3 ]
机构：
[1] Univ Fed Rio de Janeiro, Inst Quim, PPGCAL, BR-21949900 Rio de Janeiro, RJ, Brazil
[2] Pontificia Univ Catolica Rio de Janeiro, PUC Rio, Dept Engn Quim & Mat, BR-2245900 Rio De Janeiro, RJ, Brazil
[3] Embrapa Agroind Alimentos, Av Amer 29501, BR-23020470 Rio De Janeiro, RJ, Brazil
[4] Ctr Brasileiro Pesquisas Fis, Rua Dr Xavier Sigaud 150, Rio De Janeiro, RJ, Brazil
[5] Univ Minho, Ctr Biol Engn, Campus Gualtar, P-4710057 Braga, Portugal
来源：
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2020年 / 159卷 / 159期
关键词：
Packaging; Biopolymers; Nanocomposites; Mechanical properties; Barrier properties; EDIBLE FILMS; BIONANOCOMPOSITE FILMS; PLASTICIZED-STARCH; EXTRACTION; NANOFIBERS; NANOSTRUCTURES; REINFORCEMENT; NANOCELLULOSE; COMPOSITES; WASTE;
D O I：
10.1016/j.ijbiomac.2020.05.046
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
Nanocomposite films prepared from starch (ST) in the presence of cellulose nanocrystals (CNCs) was performed using grape pomace as raw material. CNCs were obtained by acid hydrolysis and added to filmogenic solutions (1, 2, 5, 10 and 15 g/1 00 g of ST). Cellulose, CNCs and Nanocomposites were characterized. Amorphous non-cellulosic materials were removed from the grape pomace presented values for CrI 64% and 71% and yield 12 and 70% in Cellulose and CNCs, respectively. Nanocomposites showed smaller permeability and the addition of 5 to 15% CNCs formed more opaque films and had improved tensile strength and Young's modulus. The addition of CNCs from 5 to 15% proved to be effective in improving mechanical properties and decreasing water vapor per-meability, important characteristics in food packaging materials. This study provided an effective method to ob-tain CNCs from the agroindustrial waste and open the way to produce high-value starch based nanocomposites. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页码：1048 / 1061
页数：14
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