Hits:

Date of Publication:2022-10-06

Journal:现代化工

Volume:35

Issue:5

Page Number:81-84

ISSN No.:0253-4320

Abstract:As a kind of non-food crop,the tuber and stalk of Jerusalem artichoke
   can be used to produce ethanol by microorganism. The production of
   ethanol has been well investigated using Jerusalem artichoke tuber. In
   this study, Jerusalem artichoke stalks are pretreated by dilute acid.
   The effects of ratio of solid to liquid ( w/w) , concentration of acid,
   pretreatment temperature and reaction time on conversion rate of
   reducing sugar are studied. The optimum condition of pretreatment is
   achieved as follows: 1 : 8 of the ratio of solid to liquid, 1. 5% of the
   concentration of sulphuric acid, 121 ℃ of reaction temperature and 60
   minutes of reaction time. Under the optimum condition, the conversion
   rate of reducing sugar in the hydrolysate can achieve 53.7%. After
   adding cellulase and xylanase, the hydrolysis of Jerusalem artichoke
   stalks is used to produce ethanol by separate hydrolysis fermentation
   (SHF) and simultaneous saccharification and fermentation ( SSF) with
   Kluyveromyces marxianus 1727. K. marxianus 1727 can use both the glucose
   and xylose in the stalk, and the concentrations of ethanol with SSF and
   SHF are 25. 91 g/L and 25. 63 g/L, respectively. Their ethanol
   productivity is 0. 54 g/L/h and 0. 26 g/L/h,respectively.

Note:新增回溯数据