2020
DOI: 10.1016/j.ijbiomac.2020.05.046
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Cellulose nanocrystals from grape pomace and their use for the development of starch-based nanocomposite films

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Cited by 95 publications
(41 citation statements)
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“…Several acid solutions have been investigated as the hydrolysis agent for obtaining high purely crystalline cellulose, such as sulfuric acid [47,54], hydrochloric acid [64], oxalic acid [57], and even combined acid solutions [46]. The penetration of hydronium ion (H 3 O + ) from the acid solution used into raw cellulose fiber breaks the β-1,4-glycosidic linkages of the amorphous regions of cellulose so that the amorphous cellulose is degraded into its monomers and remained the crystalline region of cellulose [43,48]. The breaks of β-1,4-glycosidic linkages are also occurred in the crystalline region due to the slight diffusion of acid solution into it.…”
Section: Cellulose Nanocrystals (Cncs) 41 Synthesis Methods and Characteristics Of Cncsmentioning
confidence: 99%
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“…Several acid solutions have been investigated as the hydrolysis agent for obtaining high purely crystalline cellulose, such as sulfuric acid [47,54], hydrochloric acid [64], oxalic acid [57], and even combined acid solutions [46]. The penetration of hydronium ion (H 3 O + ) from the acid solution used into raw cellulose fiber breaks the β-1,4-glycosidic linkages of the amorphous regions of cellulose so that the amorphous cellulose is degraded into its monomers and remained the crystalline region of cellulose [43,48]. The breaks of β-1,4-glycosidic linkages are also occurred in the crystalline region due to the slight diffusion of acid solution into it.…”
Section: Cellulose Nanocrystals (Cncs) 41 Synthesis Methods and Characteristics Of Cncsmentioning
confidence: 99%
“…However, this only changes the size of crystalline cellulose into nanoscale because the crystalline region is more compact and rigid. Cellulose purity, acid type, acid concentration, processing time, a ratio of solid to the acid solution, and temperature are the important parameters involved in the CNCs preparation using the acid hydrolysis method [44,48]. As mentioned in Table 4, Chieng et al [51] and Rahman et al [52] used the same method for CNCs preparation from different cellulose sources, i.e., oil palm mesocarp and tea leaf waste fibers.…”
Section: Cellulose Nanocrystals (Cncs) 41 Synthesis Methods and Characteristics Of Cncsmentioning
confidence: 99%
“…Atualmente, resíduos agroindustriais podem ser utilizados na produção de ração animal, biocombustível, compostos bioativos, enzimas, entre outros bioprodutos (Sharma et al, 2021;Velarde et al, 2020;Takeyama et al, 2020; sendo, uma promissora alternativa o uso desses resíduos para desenvolvimento de filmes biodegradáveis (Luchese et al, 2021;Luchese et al, 2019) e filmes nanocompósitos (Coelho et al, 2020;Pelissari et al, 2017;Balakrishnan et al, 2017) com potencial aplicação como embalagem ativa (Crizel et al, 2018;Crizel et al, 2016). Nesse sentido, considerando a proeminente geração de resíduos alimentares no Brasil (Santos et al, 2020;Dal' Magro & Talamini, 2019), tais como resíduos de acerola, goiaba, abacaxi, caju, uva, laranja, mamão, maracujá, mandioca (Takeyama et al, 2020;Andrade et al, 2017;Silva et al, 2014;Souza et al, 2011), há potencialidade de valorização destes resíduos vegetais para o desenvolvimento de filmes, dado riqueza de componentes hábeis para formação de uma matriz polimérica (Souza et al, 2021;Acquavia et al, 2021;Otoni et al, 2017).…”
Section: Perda E Desperdício De Alimentos: Importância Do Aproveitamento De Resíduos Vegetaisunclassified
“…Os filmes apresentaram característica hidrofóbica e boas propriedades mecânicas e de barreira (Huang et al, 2020). Coelho et al (2020) desenvolveram um filme à base de amido reforçado com nanocristais de celulose do bagaço de uva. À medida que maiores concentrações de nanopartículas compuseram as formulações, os filmes apresentaram maior resistência mecânica e menor maleabilidade.…”
Section: Filmes Nanocompósitos à Base De Resíduos Agroindustriaisunclassified
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