%0 Journal Article
%T Production of Ethanol and Isoflavones from Steam-pretreated Radix Puerariae by Solid State Fermentation<br>汽爆葛根直接固态发酵乙醇联产葛根黄酮
%A Xiaoguo Fu
%A Hongzhang Chen
%A Weidong Wang
%A <br>付小果
%A 陈洪章
%A 汪卫东
%J 生物工程学报
%D 2008
%I 
%X 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 35~37oC 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.
%K radix puerariae
%K steam-pretreatment
%K ethanol
%K isoflavones<br>葛根
%K 汽爆
%K 乙醇
%K 黄酮
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=A66E90C274451689E69F6F0291467824&aid=0143010A21ABD9D567D60DB6C1E087DF&yid=67289AFF6305E306&vid=B91E8C6D6FE990DB&iid=B31275AF3241DB2D&sid=158793AD8125C377&eid=6D947E6CDDEFFBDE&journal_id=1000-3061&journal_name=生物工程学报&referenced_num=0&reference_num=9