College of Life Sciences and Biotechnology, Korea University, Anam-dong, Seongbuk-Gu, Seoul 136-701, South Korea; Institute of Bioprocess and Biosystems Engineering, Hamburg University of Technology, Denickestr. 15, D-21071 Hamburg, Germany.
J Biotechnol. 2013 Oct 20;168(2):208-11. doi: 10.1016/j.jbiotec.2013.06.024. Epub 2013 Jul 9.
The combined effect of both carbonic anhydrase (CA) and the rigidity of polyethylene glycol (PEG) were found to assist the bio-mineralized crystallization behavior of CO2 differentially. In this study, different forms of magnetically responsive calcium carbonate (CaCO3) crystal composites were successfully formed from gaseous CO2 by using the different forms of polyethylene glycols (PEGs) in a constant CO2 pressure controlled chamber. Polygonal particles were produced with more rigid polymer chains (branched PEG), whereas less rigid polymer chains (PEG) induced the formation of ellipsoidal particles. However, no morphological changes occurred without the presence of CA.
研究发现，碳酸酐酶（CA）和聚乙二醇（PEG）的刚性共同作用有助于 CO2 的生物矿化结晶行为。在这项研究中，通过在恒压 CO2 控制室内使用不同形式的聚乙二醇（PEG），成功地从气态 CO2 中形成了具有不同形态的磁响应碳酸钙（CaCO3）晶体复合材料。具有刚性聚合物链的多边形颗粒（支化 PEG），而具有较低刚性聚合物链的（PEG）则诱导形成椭圆形颗粒。然而，如果没有 CA 的存在，就不会发生形态变化。
