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Evaluation of the inter-particle interference of cellulose and lignin in lignocellulosic materials.
International Journal of Biological Macromolecules ( IF 8.2 ) Pub Date : 2020-01-23 , DOI: 10.1016/j.ijbiomac.2020.01.234
Chukwuzubelu Okenwa Ufodike 1 , Vincent Obiozo Eze 2 , Mohammad Faisal Ahmed 3 , Abiodun Oluwalowo 1 , Jin Gyu Park 2 , Okenwa I Okoli 2 , Hui Wang 2
Affiliation  

The inter-particle interference of lignocellulosic materials describes the order of the macromolecules at a larger size scale, which can give information about the pore structure, and interface of cellulose and lignin. The pore structure and interface influence the rate of enzymatic hydrolysis and thermal decomposition in cellulosic ethanol manufacturing. In this study, the inter-particle interference of cellulose and lignin of three major categories of lignocellulosic materials: wood-based (cedar and oak), energy crop (bamboo), and agricultural or forestry waste (palm) were evaluated. Scanning electron microscopy (SEM) reveals morphological irregularities in the case of bamboo and palm, which may form nucleation sites for faster accessibility to enzyme molecules. Small-angle X-ray scattering (SAXS) shows increased power-law exponent for palm, suggesting a less clustered structure, which was consistent with the rough surface morphology as detected by the SEM. Differential Scanning Calorimetry (DSC) showed a higher temperature maximum for cedar and oak, which is indicative of higher intermolecular forces within their organic compounds, and could result in slower disintegration of the macromolecules during biochemical processing. This study will help to estimate the activity of the macromolecules and absorption capacity of lignocellulosic materials during biochemical processing.

中文翻译:

评价木质纤维素材料中纤维素和木质素的颗粒间干扰。

木质纤维素材料的颗粒间干扰以较大的尺寸描述了大分子的顺序,这可以提供有关孔结构以及纤维素和木质素界面的信息。孔结构和界面影响纤维素乙醇生产中酶促水解和热分解的速率。在这项研究中,评估了三种主要种类的木质纤维素材料对纤维素和木质素的颗粒间干扰:木基(雪松和橡木),能源作物(竹子)以及农业或林业废弃物(棕榈)。扫描电子显微镜(SEM)揭示了竹子和棕榈的形态不规则性,它们可能形成成核位点,以便更快地访问酶分子。小角度X射线散射(SAXS)显示手掌的幂律指数增加,提示聚集较少的结构,这与通过SEM检测到的粗糙表面形态是一致的。差示扫描量热法(DSC)显示雪松和橡树的最高温度最高,这表明它们的有机化合物具有较高的分子间作用力,并且可能导致大分子在生化过程中的分解速度变慢。这项研究将有助于估计生物化学过程中大分子的活性和木质纤维素材料的吸收能力。并可能导致大分子在生化过程中的分解速度变慢。这项研究将有助于估计生物化学过程中大分子的活性和木质纤维素材料的吸收能力。并可能导致大分子在生化过程中的分解速度变慢。这项研究将有助于估计生物化学过程中大分子的活性和木质纤维素材料的吸收能力。
更新日期:2020-01-23
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