Laboratory of Renewable Resources Engineering, Potter Engineering Center, 500 Central Drive, Purdue University, West Lafayette, IN 47907-2022, USA.
Bioresour Technol. 2011 Dec;102(24):11089-96. doi: 10.1016/j.biortech.2011.06.054. Epub 2011 Jun 22.
Feedstock quality of switchgrass for biofuel production depends on many factors such as morphological types, geographic origins, maturity, environmental and cultivation parameters, and storage. We report variability in compositions and enzymatic digestion efficiencies for three cultivars of switchgrass (Alamo, Dacotah and Shawnee), grown and harvested at different locations and seasons. Saccharification yields of switchgrass processed by different pretreatment technologies (AFEX, dilute sulfuric acid, liquid hot water, lime, and soaking in aqueous ammonia) are compared in regards to switchgrass genotypes and harvest seasons. Despite its higher cellulose content per dry mass, Dacotah switchgrass harvested after wintering consistently gave a lower saccharification yield than the other two varieties harvested in the fall. The recalcitrance of upland cultivars and over-wintered switchgrass may require more severe pretreatment conditions. We discuss the key features of different pretreatment technologies and differences in switchgrass cultivars and harvest seasons on hydrolysis performance for the applied pretreatment methods.
用于生物燃料生产的柳枝稷原料质量取决于许多因素，例如形态类型、地理起源、成熟度、环境和栽培参数以及储存。我们报告了三种柳枝稷（Alamo、Dacotah 和 Shawnee）品种的组成和酶解效率的变化，这些品种在不同的地点和季节种植和收获。比较了不同预处理技术（AFEX、稀硫酸、液热水、石灰和氨水溶液浸泡）处理的柳枝稷的糖化产率，涉及柳枝稷基因型和收获季节。尽管冬季收获的 Dacotah 柳枝稷每干质量的纤维素含量更高，但它的糖化产率始终低于秋季收获的其他两个品种。旱地品种和越冬柳枝稷的抗逆性可能需要更严格的预处理条件。我们讨论了不同预处理技术的关键特征以及柳枝稷品种和收获季节的差异对应用预处理方法水解性能的影响。
