Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Integrated supercritical fluid extraction and subcritical water hydrolysis for the recovery of bioactive compounds from pressed palm fiber

Texto completo
Autor(es):
Cardenas-Toro, Fiorella P. [1] ; Forster-Carneiro, Tania [1] ; Rostagno, Mauricio A. [1] ; Petenate, Ademir. J. [2] ; Maugeri Filho, Francisco [1] ; Meireles, M. Angela A. [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Food Engn, LASEFI DEA FEA, BR-13083862 Campinas, SP - Brazil
[2] Univ Estadual Campinas, Dept Stat, DE IMECC, BR-13081970 Campinas, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF SUPERCRITICAL FLUIDS; v. 93, n. SI, p. 42-48, SEP 2014.
Citações Web of Science: 28
Resumo

Pressed palm fiber (PPF), a residue obtained from palm oil industry, is a source of bioactive compounds, such as carotenoids, which are used as food additives. It also has cellulose and hemicellulose that can be used to yield fermentable sugars for the production of second generation ethanol. Supercritical fluid extraction (SFE) of pressed palm fiber provides an oil rich in carotenoids while subcritical water hydrolysis (SubWH) produces hydrolysates with high amounts of fermentable sugars. In this work, the effects of pressure (15-30 MPa) and temperature (318 and 328 K) on SFE of carotenoids were investigated. The SFE extract with highest carotenoid content was obtained at 318 K and 15 MPa (2.3% d.b., 0.81 mg beta-carotene/g extract). After the extraction, the influence of process temperature (423-633 K), pressure (15 and 25 MPa), solvent:feed ratio (120 and 240), and residence time (1.25-5 min) on SubWH of the extraction residue was studied. At the temperature of 523 K, the highest total reducing sugar yield (11-23 g glucose/100 g carbohydrate) and the highest biomass conversion (40-97%) were obtained for any pressure and solvent:feed ratio. The highest selectivity for saccharide formation was found at 423 K (20-59 mol glucose/mol furfural equivalent). Optimal conditions for high saccharide formation and low sugar degradation product in subcritical hydrolysis were obtained at 523 K, 15 MPa, solvent:feed ratio of 120, residence time of 2.5 min with a total reducing sugar yield of 22.9 g glucose/100 g carbohydrate and a conversion of 84.9%. (C) 2014 Elsevier B.V. All rights reserved. (AU)

Processo FAPESP: 11/19817-1 - Biorefinaria na indústria agroalimentar: reaproveitamento de resíduos para produção de novos compostos químicos e biohidrogênio
Beneficiário:Tânia Forster Carneiro
Linha de fomento: Auxílio à Pesquisa - Programa BIOEN - Apoio a Jovens Pesquisadores
Processo FAPESP: 12/10685-8 - Combinação/acoplamento de processos para a produção e encapsulamento de extratos vegetais de alto valor agregado: avaliação técnica e econômica
Beneficiário:Maria Angela de Almeida Meireles Petenate
Linha de fomento: Auxílio à Pesquisa - Regular