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首页> 外文期刊>Turkish Journal of Agriculture & Forestry >The Effect of the Duration of Alkali Treatment on the Solubility of Polyoses
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The Effect of the Duration of Alkali Treatment on the Solubility of Polyoses

机译：碱处理时间对多糖溶解度的影响

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Holocelluloses from the wood of pine and oak species growing naturally in Turkey were extracted with 5% KOH solution under specified conditions, and soluble polyoses and lignin were examined. The extractions of both pine and oak wood holocelluloses followed the mechanism of second order reaction. While the glucomannan of pine was poorly dissolvable during the extraction, xylan, the main polyose of hardwoods, was removed very efficiently upto almost 90 %. The solubility of xylane also obeyed the some kinehes. By the equation [ A ] 1- n - [ A 0 ] 1-n = ( n-1) kt, where n=2, for the second order mechanism, kinetic parameters [A O ] and k were calculated to be 29.55%, 0.04417 for pine and 44.675%, 0,03018 for oak. Using these kinetic parameters, the predicted yields were in very close agreement with their counterparts from the experiments. Moreover, the holocelluloses and certain residues obtained after alkali were analyzed with regard to their anhydromonosaccharides. GalactO?LUcomannan, the main polyose of pine wood, was resistant to alkali, and about half of the more easily soluble arabinoxylane was removable. In contrast to mannane, nearly 90% of the hard wood xylane was dissolved by alkali, and its extraction also followed the second order mechanism. Thereafter, the kinetic parameters related to this extraction were calculated.
机译：在指定条件下，用5％的KOH溶液提取来自土耳其自然生长的松树和栎树木材的纤维素，然后检查可溶性多糖和木质素。松木和橡木全纤维素的提取均遵循二级反应机理。尽管松树的葡甘露聚糖在提取过程中溶解度很差，但硬木的主要多糖木聚糖却被有效地去除了，几乎达到了90％。木聚糖的溶解度也服从一些结节。通过方程[A] 1- n-[A 0] 1-n =（n-1）kt，其中n = 2，对于二阶机理，动力学参数[AO]和k计算为29.55％，松木为0.04417，橡木为44.675％，0.03018。使用这些动力学参数，预测的收率与实验中的对应值非常接近。此外，分析了全纤维素和碱后获得的某些残基的脱水单糖。 GalactO？LUcomannan是松木的主要多糖，对碱具有抵抗力，易溶的阿拉伯木聚糖约有一半是可去除的。与甘露烷相反，几乎90％的硬木二甲苯被碱溶解，其提取也遵循二级机理。此后，计算与该提取有关的动力学参数。

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