Department of Biological and Agricultural Engineering, North Carolina State University, Campus Box 7625, Raleigh, NC 27695, USA.
Bioresour Technol. 2012 Jul;116:540-4. doi: 10.1016/j.biortech.2012.04.050. Epub 2012 Apr 21.
To evaluate the potential of gamagrass as a feedstock for biofuels, seven gamagrass varieties were analyzed for their chemical composition and subjected to pretreatment at 121 °C using 1% NaOH/H(2)SO(4) (w/w) for 60 min and enzymatic hydrolysis for fermentable sugar production. Based on total sugar yield, the varieties Eagle Point Devil Corn and Sun Devil were selected for NaOH and H(2)SO(4) pretreatment, respectively. The investigation on pretreatment conditions showed that, the conditions applied in gamagrass variety screening (121 °C, 1% NaOH/H(2)SO(4), 60 min) were sufficient to maximize sugar production, such that the total sugar yield of Eagle Point Devil Corn reached 479.6 mg g(-1) after NaOH pretreatment and that of Sun Devil reached 456.5 mg g(-1) raw biomass after H(2)SO(4) pretreatment. Compared with other potential energy crops including switchgrass and Bermuda grass, gamagrass gave a higher sugar yield after NaOH pretreatment and a comparable sugar yield after H(2)SO(4) pretreatment.
为了评估杂交狼尾草作为生物燃料原料的潜力，对 7 个杂交狼尾草品种进行了化学成分分析，并在 121°C 下用 1%的 NaOH/H2SO4（w/w）预处理 60 分钟，然后进行酶水解以生产可发酵糖。基于总糖产量，选择 Eagle Point Devil Corn 和 Sun Devil 这两个品种进行 NaOH 和 H2SO4 预处理。预处理条件的研究表明，在杂交狼尾草品种筛选中应用的条件（121°C、1%NaOH/H2SO4、60 分钟）足以最大程度地提高糖的产量，因此，NaOH 预处理后 Eagle Point Devil Corn 的总糖产量达到 479.6mg/g，H2SO4 预处理后 Sun Devil 的总糖产量达到 456.5mg/g 鲜生物质。与其他潜在的能源作物，包括柳枝稷和百喜草相比，杂交狼尾草在经过 NaOH 预处理后可获得更高的糖产量，而在经过 H2SO4 预处理后则可获得可比的糖产量。
