Improved suspension stability of calcium carbonate nanoparticles by surface modification with oleic acid and phospholipid

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• 作者：Jin Kim ; Seung Kang Bea ; Yool Hee Kim…
• 关键词：calcium carbonate nanoparticles ; surface modification ; fatty acid ; phospholipid ; suspension stability
• 刊名：Biotechnology and Bioprocess Engineering
• 出版年：2015
• 出版时间：August 2015
• 年：2015
• 卷：20
• 期：4
• 页码：794-799
• 全文大小：517 KB
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• 作者单位：Jin Kim (1)
  Seung Kang Bea (2) (5)
  Yool Hee Kim (1) (5)
  Dong-Woon Kim (4)
  Ki-Young Lee (1) (2) (3)
  Chang-Moon Lee (2) (6)
  
  1. Department of Advanced Chemicals and Engineering, Chonnam National University, Gwangju, 500-757, Korea
  2. Interdisciplinary Program of Perfume and Cosmetics, Chonnam National University, Gwangju, 500-757, Korea
  5. SION BSK Co., Ltd., Gwangju, 501-081, Korea
  4. Department of Nursing, Gwangyang Health College, Gwangyang, 545-703, Korea
  3. Faculty of Applied Chemical Engineering and Functional Food Research Center, Chonnam National University, Gwangju, 500-757, Korea
  6. Department of Biomedical Engineering, Chonnam National University, Yeosu, 550-749, Korea
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Biotechnology
  
• 出版者：The Korean Society for Biotechnology and Bioengineering
• ISSN：1976-3816

文摘

We prepared and characterized calcium carbonate nanoparticles (CC NPs) that were surface-modified with oleic acid (OA) and phosphatidylcholine (PC) in order to improve their suspension stability in an aqueous solution. The improvement in the suspension stability of CC NPs in an aqueous solution may be helpful to extend their applicability to a wider range of biological applications. The CC NPs were coated with OA by making use of their electrostatic potential and were then decorated with PC. The CC NPs surface-modified with OA and PC were successfully constructed, and the existence of the decorated OA and PC in the surface of the PC-OA-CC NPs was observed via transmission electron microscopy (TEM) and was confirmed by thermo gravimetric analysis (TGA), Xray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) analyses. The PC-OA-CC NPs floating in an aqueous solution exhibited better stability when compared to non-surface-modified CC NPs. The DLS and TEM results revealed that the degree of size agglomeration for the CC NPs was significantly reduced by the surface modification with OA and PC. The PC-OA-CC NPs showed a very low cytotoxicity at a high concentration in terms of the cell viability of the RAW264.7 cells. Consequentially, the stability in suspension of the CC NPs in an aqueous solution could be effectively improved through surface-modification with OA and PC. PC-OACC NPs could be useful in increasing the range biological applications for CC NPs. Keywords calcium carbonate nanoparticles surface modification fatty acid phospholipid suspension stability