Data/hora: 10/06/2024 10:23:30

Biblioteca(s): | Embrapa Solos.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | Internacional - A
Data corrente: | 10/01/2007
Data da última atualização: | 20/10/2021
Autoria: | PRESTES, R. A.; COLNAGO, L. A.; FORATO, L. A.; VIZZOTTO, L.; NOVOTNY, E. H.; CARRILHO, E.
Afiliação: | ROSILENE APARECIDA PRESTES, USP; LUIZ ALBERTO COLNAGO, CNPDIA; LUCIMARA APARECIDA FORATO, CNPDIA; LUCINÉIA VIZZOTTO, CNPDIA; ETELVINO HENRIQUE NOVOTNY, CNPS; EMANUEL CARRILHO, USP.
Título: | A rapid and automated low resolution NMR method to analyze oil quality in intact oilseeds.
Ano de publicação: | 2007
Fonte/Imprenta: | Analytica Chimica Acta, Amsterdam, v. 596, n. 2, p. 325-329, July 2007.
DOI: | https://doi.org/10.1016/j.aca.2007.06.022
Idioma: | Inglês
Conteúdo: | Oilseeds with modified fatty acid profiles have been the genetic alternative for high quality vegetable oil for food and biodiesel applications. They can provide stable, functional oils for the food industry, without the hydrogenation process that produces trans-fatty acid, which has been linked to cardiovascular disease. High yield and high quality oilseeds are also necessary for the success of biodiesel programs, as polyunsatured or saturated fatty acid oil produces biofuel with undesirable properties. In this paper, a rapid and automated low resolution NMR method to select intact oilseeds with a modified fatty acid profile is introduced, based on 1H transverse relaxation time (T2). The T2 weighted NMR signal, obtained by a CPMG pulse sequence and processed by chemometric methods was able to determine the oil quality in intact seeds by its fatty composition, cetane number, iodine value and kinematic viscosity with a correlation coefficient r > 0.9. The automated system has the potential to analyze more than 1000 samples per hour and is a powerful tool to speed up the selection of high quality oilseeds for food and biodiesel applications.
Palavras-Chave: | Ácidos graxos trans; Oleaginosas; Ressonância magnética nuclear.
Thesaurus Nal: | biodiesel.
Categoria do assunto: | P Recursos Naturais, Ciências Ambientais e da Terra
Registro original: | Embrapa Solos (CNPS)
Exemplares: | CNPS - (12746-1) - UPC - AP - DD -  -  - 2008.00009 - DIS