Data/hora: 05/06/2024 02:15:36

Biblioteca(s): 	Embrapa Instrumentação.	
Data corrente: 	30/11/2022	
Data da última atualização: 	22/01/2024	
Autoria: 	MARTINS, M. A.; MATTOSO, L. H. C.	
Afiliação: 	MARIA ALICE MARTINS, CNPDIA; LUIZ HENRIQUE CAPPARELLI MATTOSO, CNPDIA.	
Título: 	Manufacture and performance of peanut skin cellulose nanocrystals.	
Ano de publicação: 	2022	
Fonte/Imprenta: 	Scientia Agricola, v. 79, n. 6, e20210010, 2022.	
Páginas: 	10 p.	
ISSN: 	1678-992X	
DOI: 	http://doi.org/10.1590/1678-992X-2021-0010	
Idioma: 	Inglês	
Conteúdo: 	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 13 C 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.	
Palavras-Chave: 	Agricultural residue; Waste.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149008/1/P-Manufacture-and-performance-of-peanut-skin-cellulose-nanocrystals.pdf	
Registro original: 	Embrapa Instrumentação (CNPDIA)	
Exemplares: 	CNPDIA - (18143-1) - UPC - AP - DD - PROCI.22/172 -  - 2022/177 - DIS