Preparation of Chitin Nanofibers with a Uniform Width as α-Chitin from Crab Shells
Preparation of Chitin Nanofibers with a Uniform Width as α-Chitin from Crab Shells
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DOI：
10.1021/bm900163d
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发表时间：
2009-06-01
影响因子：
6.2
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Ifuku, Shinsuke;Nogi, Masaya;Yano, Hiroyuki
以干燥的蟹壳为原料，去除蛋白质和矿物质，在不干燥的酸性条件下进行简单研磨处理，制备出甲壳素纳米纤维。所得纳米纤维；通过FE-SEM观察，发现其宽度均匀，约为10-20 nm，宽高比高；这两项发现与对虾纳米纤维的发现相似。此外，还证实了纳米纤维是从天然几丁质/蛋白质/矿物复合材料中提取的。元素分析数据、FT-IR光谱和x射线衍射谱证实，n -乙酰基没有被去除，α -几丁质晶体结构保持不变。
Chitin nanofibers were prepared from dried crab shells by a simple grinding treatment in a never-dried state under an acidic condition after the removal of proteins and minerals. The obtained nanofibers; were observed by FE-SEM and found to have a uniform width of approximately 10-20 nm and high aspect ratio; both these findings were similar to those for nanofibers from prawns. Furthermore, it was confirmed that the nanofibers were extracted from the natural chitin/protein/mineral composites of crab shell in their original state. That is, the N-acetyl group was not removed and the alpha-chitin crystal structure was maintained, as confirmed by elemental analysis data, FT-IR spectra, and X-ray diffraction profiles.