Affinity of Hemicellulose for Cellulose Produced by Acetobacter Xylinum |
| |
Authors: | Tadahisa Iwata Lucia Indrarti Jun-Ichi Azuma |
| |
Institution: | (1) Laboratory of Recycle System of Biomass, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-01, Japan;(2) Research and Development Center for Applied Physics, Indonesian Institute of Science (LIPI), Jalan Cisitu, 21/154D Bandung, Indonesia;(3) Laboratory of Recycle System of Biomass, Graduate School of Agriculture, Kyoto University, Sakyo-ku, Kyoto, 606-01, Japan |
| |
Abstract: | Cellulose composites were produced by culturing Acetobacter aceti subsp. xylinum (ATCC 53524, agitation tolerant strain) under shaking and agitating conditions in the presence of 2% pine or beech Björkman lignin-carbohydrate complexes (LCCs) or six different types of hemicellulosic polysaccharides including glucuronoxylan, glucomannan, O-acetyl-glucuronoxylan, arabinoglucuronoxylan, arabinogalactan and xyloglucan. Hemicellulosic polysaccharide contents in cellulose composites were similar in spite of the differences in culture, shaking and agitating conditions. On the basis of hemicellulosic polysaccharide contents and X-ray diffraction patterns after extraction by dilute NaOH solution, glucomannan family polysaccharides were found to have the highest affinity to bacterial cellulose. Composites with neutral and acidic LCCs were resistant against alkali while high lability of their delignified carbohydrates against alkali indicates the importance of lignin for formation of cellulose-hemicellulose-lignin framework of plant secondary cell-walls. |
| |
Keywords: | Acetobacter xylinum lignin-carbohydrate complex hemicellulosic polysaccharide X-ray diffraction alkaline extraction |
本文献已被 SpringerLink 等数据库收录! |
|