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Original Articles

TRANSFORMACIÓN DE LAS β-GLICOSIL ISOFLAVONAS POR FERMENTACIÓN SEMI-SÓLIDA DE HARINA DE SOJA CON Aspergillus oryzae
TRANSFORMATION OF β-GLUCOSIDE ISOFLAVONES ON SOLID-STATE FERMENTATION OF THE SOY FLOUR WITH Aspergillus oryzae
TRANSFORMACIÓN DAS β-GLICOSIL-ISOFLAVONAS POR FERMENTACIÓN SEMI-SÓLIDA DE FARIÑA DE SOIA CON Aspergillus oryzae

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Pages 115-121 | Received 28 Jan 2003, Accepted 25 Jun 2003, Published online: 14 Oct 2009
 

Abstract

Resumen

Resumo

The fungus filamentous Aspergillus oryzae ATCC 22786 produces high β-glucosidase activity, which is able to convert glucoside isoflavone to aglycones forms present into soybean flour. The glucoside isoflavones were obtained from defatted soy flour by alcoholic extraction using 80% methanol. It was observed that the glucoside isoflavones extracted, such as daidzin, glycitin and genistin, were efficiently transformed into their aglycones forms (daidzein, glycitein and genistein) by solid-state fermentation after 48 h at 30°C with A. oryzae spores. © 2003 Altaga. All rights reserved.

El hongo filamentoso Aspergillus oryzae ATCC 22786 produce alta actividad de β-glicosidasa, la cual es capaz de convertir las glicosil isoflavonas presentes en la soja a sus formas agliconas. Las isoflavonas glicosiladas fueron obtenidas de la harina de soja desgrasada por extracción alcohólica utilizando metanol 80%. Se observó que las isoflavonas glicosiladas extraídas tales como, daidcina, glicitina y genistina, fueron eficientemente convertidas en sus formas agliconas (daidceína, gliciteína y genisteína) por la enzima después de 48 h a 30°C, con esporas de A. oryzae. © 2003 Altaga. Todos los derechos reservados.

Palabras clave: soja, β-glucosidasa, fermentación semi-sólida, isoflavonas, aglicona

O hongo filamentoso Aspergillus oryzae ATCC 22786 produce alta actividade de β-glicosidasa, a cal é capaz de convertir as glicosil isoflavonas presentes na soia a súas formas agliconas. As isoflavonas glicosiladas foron obtidas da fariña de soia desgraxada por extracción alcohólica empregando metanol 80%. Observouse que as isoflavonas glicosiladas extraídas tales como, daidcina, glicitina y genistina, foron eficientemente convertidas nas súas formas agliconas (daidceína, gliciteína y genisteína) pola enzima despois de 48 h a 30°C, con esporas de A. oryzae. © 2003 Altaga. Tódolos dereitos reservados.

Palabras chave: soia, β-glucosidasa, fermentación semi-sólida, isoflavonas, alicona

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