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堿性氧化物預(yù)處理玉米秸稈維管柱、皮層和表皮研究
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Pretreatment of Micro-column, Cortex and Epidermis of Corn Stover by Alkali Oxide
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    摘要:

    以玉米秸稈的維管柱,、皮層和表皮為材料,，分別考察固液比,、發(fā)酵時(shí)間、堿性氧化物濃度和預(yù)處理時(shí)間對(duì)發(fā)酵液中還原糖含量以及FPA酶活的影響,；通過(guò)正交試驗(yàn)進(jìn)一步優(yōu)化糖化條件,，結(jié)果表明，在固液比,、發(fā)酵時(shí)間,、堿性氧化物、預(yù)處理時(shí)間分別為1∶20,、5d,、1%、3d,，1∶15,、5.5d、1%,、3.5d和1∶15,、5d、1%,、3d條件下,，發(fā)酵液中的還原糖含量最高，維管柱,、皮層和表皮分別為15.92%,、12.43%和5.93%,；木質(zhì)纖維素糖化率分別為31.84%、18.65%和8.9%,。在糖含量較低時(shí),，F(xiàn)PA與還原糖含量變化趨勢(shì)基本一致。

    Abstract:

    Micro-column, cortex and epidermis of corn stover were used to produce cellulases. The effects of solid-liquid rate (SL), fermentation time (FT), concentration of alkali oxide (AO) and pretreatment time (PT) on reducing sugar contents and filter paper activity (FPA) of the solution in the broth were investigated. Orthogonal tests were performed to optimize the saccharification conditions further. The results showed that the highest contents of reducing sugars were determined for the micro-column, cortex and epidermis of corn stover under the conditions of SL 1∶20/FT 5d/AO 1%/PT 3d, SL 1∶15/FT 5.5d/AO 1%/PT 3.5d and SL 1∶15/FT 5d/ AO 1%/PT 3d, respectively. The contents of reducing sugar reached 15.92%, 12.43% and 5.93%, and the highest saccharification percentages of the lignocelluloses reached 31.84%, 18.65% and 8.9%, respectively under the above conditions. The developing trend of filter paper activity was similar to the concentration of reducing sugar under lower concentrations of reducing sugar. 

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楊培周,姜紹通,鄭志,羅水忠,高星星.堿性氧化物預(yù)處理玉米秸稈維管柱,、皮層和表皮研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(Z1):137-140. Pretreatment of Micro-column, Cortex and Epidermis of Corn Stover by Alkali Oxide[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(Z1):137-140.

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