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首页> 外文期刊>International Journal of Biological Macromolecules: Structure, Function and Interactions >Crystallinity of lyophilised carrot cell wall components
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Crystallinity of lyophilised carrot cell wall components

机译：冻干胡萝卜细胞壁成分的结晶度

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摘要

The aim of this work was to investigate the effect of removal of cell wall components on the crystallinity of cell walls using X-ray diffraction Various insoluble cell wall residues were prepared following a sequential extraction of carrot cell wall material. X-ray diffraction patterns were typical of cellulose although there was a possible contribution of pectic polysaccharides to the crystallinity. As more amorphous material was removed to produce a cellulose rich residue, the crystallinity index increased from 12 to 16%, larger than that estimated from cellulose alone. For the last residue treated with 4M KOH, a lower value of crystallinity was found (14%) which resulted from the change of some crystalline domains of cellulose into amorphous regions. Pressing conditions (temperature, water content) have been investigated and did not alter the crystallinity index significantly.
机译：这项工作的目的是研究使用X射线衍射去除细胞壁成分对细胞壁结晶度的影响。在依次提取胡萝卜细胞壁材料后，制备了各种不溶性细胞壁残留物。 X射线衍射图样是纤维素的典型特征，尽管果胶多糖可能对结晶度有贡献。随着更多无定形物质的去除，产生出富含纤维素的残留物，结晶度指数从12％增至16％，高于仅凭纤维素估计的结晶度。对于用4M KOH处理的最后残留物，发现较低的结晶度值（14％），这是由于纤维素的某些结晶域变为无定形区域所致。已经研究了压制条件（温度，水含量），并且没有明显改变结晶度指数。

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