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XRD studies of beta-chitin from squid pen with calcium solvent

机译:用钙溶剂对鱿鱼笔中的β-甲壳质进行XRD研究

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摘要

The crystalline structure of beta-chitin from squid pen was investigated by X-ray diffraction (XRD). The purified beta-chitin was prepared from bigfin reefsquid pen. P-Chitin was treated with saturated calcium chloride dihydrate/alchohol (CaCl(2 center dot)2H(2)O/MeOH) solvent system at different conditions for XRD studies. The change of crystallinity of beta-chitin from squid pen was studied by using the fiber photographs on imaging plates. The results showed that the diffraction peak (0 10) was shifted. It means that the lattice plane (010) interplanarilly spreaded to 3.4 angstrom, when the squid pen was washed with water after treatment of Ca solvent. Furthermore, when the squid pen was dried after treatment of Ca solvent and washing with water, interplanar spacing of (0 10) inversely shrank to 1.1 angstrom. These results suggested that Ca solvent especially influences the plane (010) of beta-chitin structure. (c) 2007 Elsevier B.V. All rights reserved.
机译:通过X射线衍射(XRD)研究了来自鱿鱼笔的β-甲壳质的晶体结构。纯化的β-甲壳质是由bigfin reefsquid笔制备的。对甲壳质用饱和氯化钙二水合物/乙醇(CaCl(2中心点)2H(2)O / MeOH)溶剂系统在不同条件下进行XRD研究。利用成像板上的纤维照片研究了鱿鱼笔中β-甲壳质的结晶度变化。结果表明,衍射峰(0 10)发生了位移。这意味着当用Ca溶剂处理后将乌贼笔用水冲洗时,晶面(010)面内扩展到3.4埃。此外,当将鱿鱼笔经Ca溶剂处理并用水洗涤后干燥时,(0 10)的晶面间距反而缩小至1.1埃。这些结果表明,Ca溶剂特别影响β-几丁质结构的平面(010)。 (c)2007 Elsevier B.V.保留所有权利。

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