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Preparation of natural chitosan from shrimp shell with different deacetylation degree

机译：用不同脱乙酰度的虾壳制备天然壳聚糖

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摘要

The main aim of the present study was to produce natural chitosan with different deacetylation degree from shrimp shells. Three deacetylation degrees of chitosan were obtained through boiling the chitin in NaOH (50% (w/v)) at 110 ℃ for 4 h. The samples were labelled as NCS1, NCS2 and NCS3 according to the number of times they were treated with alkaline solution. The functional groups of the obtained products and the degree of deacetylation were determined through Fourier transformed infra-red spectroscopy. Scanning electron microscope was employed to characterise the morphology of the produced materials. Cell viability assay was carried out using mesenchymal stem cells cultured on the samples for 7 days. The results showed that the deacetylation degree of chitin, NCS1, NCS2 and NCS3 became 50.1, 73.5, 82.3 and 82.5%, respectively. The natural chitin had carnation-like morphology. NCS1, NCS2 and NCS3 had the raised hills with the smaller and denser Gulbergs, however, there was no significant difference between NCS2 and NCS3 regarding the structure and deacetylation degree. Moreover, the result of the cell culture experiment indicated that the number of cells on the NCS1 was less than that of the NCS2 after 7 days.
机译：本研究的主要目的是从虾壳中生产具有不同脱乙酰度的天然壳聚糖。将甲壳素在NaOH（50％（w / v））中于110℃煮沸4h得到壳聚糖的三种脱乙酰度。根据用碱溶液处理的次数将样品标记为NCS1，NCS2和NCS3。通过傅立叶变换红外光谱法确定所得产物的官能团和脱乙酰度。使用扫描电子显微镜表征所产生的材料的形态。使用在样品上培养7天的间充质干细胞进行细胞活力测定。结果表明，几丁质，NCS1，NCS2和NCS3的脱乙酰度分别为50.1、73.5、82.3和82.5％。天然甲壳质具有康乃馨状的形态。 NCS1，NCS2和NCS3的丘陵凸起，而Gulbergs较小且密集，但在结构和脱乙酰度方面，NCS2和NCS3之间没有显着差异。此外，细胞培养实验的结果表明，在7天后，NCS1上的细胞数量少于NCS2上的细胞数量。

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  • 来源
    《Materials Research Innovations》 |2018年第3期|177-181|共5页
  • 作者

    Fatemeh Heidari; Mehdi Razavi; Mohammad E. Bahrololoom; Mohammadreza Tahriri; Morteza Rasoulianboroujeni; Hari Koturi; Lobat Tayebi;

  • 作者单位

    Department of Materials Science and Engineering, School of Engineering, Yasouj University, Yasuj, Iran;

    BCAST, Institute of Materials and Manufacturing, Brunel University London, London, UK,Brunel Institute for Bioengineering, Brunel University London, London, UK;

    Department of Materials Science and Engineering, School of Engineering, Shiraz University, Shiraz, Iran;

    Marquette University School of Dentistry, Milwaukee, WI, USA;

    Marquette University School of Dentistry, Milwaukee, WI, USA;

    Department of Biology, University of Central Oklahoma, Edmond, OK, USA;

    Marquette University School of Dentistry, Milwaukee, WI, USA;

  • 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

    Chitosan; chitin; shrimp shell; deacetylation degree; FTIR; SEM;

    机译：壳聚糖甲壳素虾壳脱乙酰度FTIR;扫描电镜;

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