کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
682157 | 888976 | 2010 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effect of harvesting date on the composition and saccharification of Miscanthus x giganteus Effect of harvesting date on the composition and saccharification of Miscanthus x giganteus](/preview/png/682157.png)
The chemical composition of the whole aerial biomass and isolated organs of Miscanthus x giganteus was examined for saccharification into fermentable sugars at early and late harvesting dates. Delayed harvest was mainly related to increased amounts of cell wall and ester-linked phenolic acids. Addition of an enzyme cocktail (cellulases, β-glucosidase and xylanase) resulted in similar enzyme digestibilities at the two harvesting dates, ranging from 11–13% and 8–9% of the cellulose and arabinoxylan, respectively. However, the internodes, leaves and sheaths varied in cell wall content and composition and gave rise to different saccharification yields with internodes being the most recalcitrant organs. Non-cell wall fraction was estimated as the amount of material extracted by neutral detergent solution, and accounted for 23% of the whole aerial biomass harvested at an early date. However, saccharification yields from the miscanthus biomass did not change after soluble fraction removal. An ammonia pretreatment improved enzyme efficiency on early-harvested miscanthus, to a greater extent than on late-harvested biomass. This trend was confirmed for two different years of harvesting.
Journal: Bioresource Technology - Volume 101, Issue 21, November 2010, Pages 8224–8231