• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Wood Chemistry and Technology >RETENTION AND STRUCTURE OF XYLANS FROM EUCALYPTUS GLOBULUS GENOTYPES WITH DIFFERENT PULPWOOD CHARACTERISTICS
【24h】

RETENTION AND STRUCTURE OF XYLANS FROM EUCALYPTUS GLOBULUS GENOTYPES WITH DIFFERENT PULPWOOD CHARACTERISTICS

机译：具有不同纸浆特性的圆叶桉基因型的木聚糖的保留和结构。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this work, six different genotypes of Eucalyptus globulus were selected on the basis of their differences in wood density and pulp yield. The trees were separated into two groups of three genotypes each: group I (samples Eg1, Eg2, and Eg3) presented wood density values of 547-573 kg/m(3) and pulp yields of 52.7-54.6%; group II (samples Eg4, Eg5, and Eg6) presented wood density of 471-485 kg/m(3) and pulp yields of 49.8-52.3%. Chemical characterization showed that genotypes of group I also presented high glucose and low lignin content as compared with genotypes from group II. Xylans content was lower in samples of group I than group II. Kraft pulps from group I presented high retention of xylans in comparison with pulps from group II. This behavior was associated with a high degree of substitution (DS) of the xylose units with methylglucuronic acids in wood and in kraft pulps in samples of group I compared with group II. Xylans isolated from wood samples of group I also presented slightly higher molar mass than xylans from group II. Results showed that xylans from a single species presented differences in their retention and structure that affected the pulp yield of E. globulus.
机译：在这项工作中，根据木材密度和纸浆产量的差异选择了六种不同的桉树基因型。树木被分为两组，每组分别具有三种基因型：第一组（样品Eg1，Eg2和Eg3）的木材密度值为547-573 kg / m（3），纸浆产率为52.7-54.6％。第二组（样品Eg4，Eg5和Eg6）的木材密度为471-485 kg / m（3），纸浆产率为49.8-52.3％。化学特征表明，与第二组的基因型相比，第一组的基因型还具有高葡萄糖和低木质素含量。第一组样品中的木聚糖含量低于第二组样品。与第二组纸浆相比，第一组的牛皮纸浆具有较高的木聚糖保留率。与第二组相比，第一组样品中木材和牛皮纸浆中甲基葡萄糖醛酸对木糖单元的高度取代（DS）与这种行为有关。从第I组木材样品中分离出的木聚糖也显示出比第II组木聚糖更高的摩尔质量。结果表明，来自单个物种的木聚糖在保留和结构上存在差异，从而影响了球E的果肉产量。

著录项

  • 来源
    《Journal of Wood Chemistry and Technology》 |2015年第3期|129-136|共8页
  • 作者

    Martinez Paulina; Pereira Miguel; Teixeira Mendonca Regis;

  • 作者单位

    Univ Concepcion, Ctr Biotecnol, Lab Recursos Renovables, Concepcion, Chile|Univ Concepcion, Fac Ciencias Forestales, Concepcion, Chile;

    Univ Concepcion, Fac Ingn, Lab Prod Forestales, Concepcion, Chile;

    Univ Concepcion, Ctr Biotecnol, Lab Recursos Renovables, Concepcion, Chile|Univ Concepcion, Fac Ciencias Forestales, Concepcion, Chile;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Eucalyptus globulus; xylans retention; H-1-NMR; SEC; pulp yield;

    机译：桉树;木聚糖保留;H-1-NMR;SEC;纸浆得率;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号