Fundamental factors affecting biomass enzymatic reactivity
Fundamental factors affecting biomass enzymatic reactivity
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DOI：
10.1385/abab:84-86:1-9:5
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发表时间：
2000-03-01
影响因子：
3
通讯作者：
Holtzapple, MT
中科院分区：
文献类型：
--
作者：
Chang, VS;Holtzapple, MT
以白杨木材为原料，采用过氧乙酸、氢氧化钾和球磨处理，制备了147种具有广谱木质素含量、乙酰基含量和结晶度指数（CrIs）的木质纤维素模型纤维。确定了一个经验模型，描述了这三个属性在酶水解的作用。木质素含量和CrI对生物质消化率的影响最大，而乙酰基含量的影响较小。几个石灰处理的生物质样品的消化率符合经验模型。石灰处理去除了所有的乙酰基和适量的木质素，并略有增加铬;木质素去除是石灰处理的主要好处。
Poplar wood was treated with peracetic acid, KOH, and ball milling to produce 147 model lignocelluloses with a broad spectrum of lignin contents, acetyl contents, and crystallinity indices (CrIs), respectively. An empirical model was identified that describes the roles of these three properties in enzymatic hydrolysis. Lignin content and CrI have the greatest impact on biomass digestibility, whereas acetyl content has a minor impact. The digestibility of several lime-treated biomass samples agreed with the empirical model. Lime treatment removes all acetyl groups and a moderate amount of lignin and increases CrI slightly; lignin removal is the dominant benefit from lime treatment.