Production of ethanol and isoflavones from steam-pretreated Radix Puerariae by solid state fermentation / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 957-961, 2008.
Artigo
em Chinês
| WPRIM
| ID: wpr-342809
ABSTRACT
The gelatinization process of the starch is replaced by unpolluted steam-pretreatment on the base of the Radix Puerariae rich in fiber and isoflavones. The production of ethanol and isoflavones by simultaneous saccharification and solid state fermentation (SSF) of steam-pretreatment Radix Puerariae is presented. The optimal technological conditions were obtained Radix Puerariae being steam-pretreated at a saturated vapor pressure of 0.8 MPa for 3.5 min, glucoamylase(65 u/g), cellulase(1.5 u/g), 0.1%(NH4)2SO4, 0.1%KH2PO4 and activated yeasts being added in, and fermentation at 35-37 degrees C for 60 h. Under these conditions, the yield of ethanol and isoflavones from 100 g Radix Pureriae (dry basis) were 27.47 g and 4.43 g, respectively, the starch utilization rate was 95%. In comparison with the traditional fermentation technology, the simultaneous saccharification and SSF of steam-pretreatment Radix Puerariae is clean and energy-saving. It provides new way of the production of ethanol from the non-food starch material, and worthwhile to be explored and implemented in industry.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Fisiologia
/
Vapor
/
Leveduras
/
Celulase
/
Glucana 1,4-alfa-Glucosidase
/
Pueraria
/
Etanol
/
Fermentação
/
Isoflavonas
/
Metabolismo
Idioma:
Chinês
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2008
Tipo de documento:
Artigo
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