| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000455417 |
| ISSN: | 0103-9016 |
| Autores: | Manrich, Anny1 Martins, Maria Alice1 Mattoso, Luiz Henrique Capparelli1 |
| Instituciones: | 1Empresa Brasileira de Pesquisa Agropecuaria, Instrumentacao Agropecuaria, Sao Carlos, Sao Paulo. Brasil |
| Año: | 2022 |
| Volumen: | 79 |
| Número: | 6 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Due to their remarkable characteristics, cellulose nanocrystals are strategic materials that has various industrial applications, and are capable of being produced from vegetable fibers derived from the discards of agricultural practices. Peanut(Arachis hypogaea L.) peel is a residue considered of low commercial value and high polluting potential that needs new applications in order to mitigate these problems. Thus, in this study the feasibility of extracting cellulose nanocrystals was investigated. Two chemical routes were followed for this extraction. In the first, the fibers were bleached before acid hydrolysis whereas mercerization was used in the second. The second route was more efficient, as it enabled the elimination of proteins and phenolic compounds, which could be confirmed through solid-state 13C nuclear magnetic resonance (NMR) that revealed no signs of lignin residues. The cellulose nanocrystals composed of mainly type I cellulose presented a high degree of crystallinity index, 75 %, a thermal stability up to 200 °C, considerable stability in suspension (zeta potential of –48.1 ± 2.1 mV), and an aspect ratio of 125. They represent options that could add value to this residue, which would ease environmental problems |
| Disciplinas: | Química, Agrociencias |
| Palabras clave: | Plantas para uso industrial, Fitoquímica, Cacahuate, Arachis hypogaea, Hidrólisis ácida, Residuos agrícolas, Mercerizado |
| Keyword: | Plants for industrial use, Phytochemistry, Acid hydrolysis, Agricultural residues, Mercerized |
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