The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Standard

The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite. / dos Santos, E. C.; Gates, W. P.; Michels, L.; Juranyi, F.; Mikkelsen, A.; da Silva, G. J.; Fossum, J. O.; Bordallo, H. N.

I: Applied Clay Science, Bind 166, 15.12.2018, s. 288-298.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Harvard

dos Santos, EC, Gates, WP, Michels, L, Juranyi, F, Mikkelsen, A, da Silva, GJ, Fossum, JO & Bordallo, HN 2018, 'The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite', Applied Clay Science, bind 166, s. 288-298. https://doi.org/10.1016/j.clay.2018.09.029

APA

dos Santos, E. C., Gates, W. P., Michels, L., Juranyi, F., Mikkelsen, A., da Silva, G. J., ... Bordallo, H. N. (2018). The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite. Applied Clay Science, 166, 288-298. https://doi.org/10.1016/j.clay.2018.09.029

Vancouver

dos Santos EC, Gates WP, Michels L, Juranyi F, Mikkelsen A, da Silva GJ o.a. The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite. Applied Clay Science. 2018 dec 15;166:288-298. https://doi.org/10.1016/j.clay.2018.09.029

Author

dos Santos, E. C. ; Gates, W. P. ; Michels, L. ; Juranyi, F. ; Mikkelsen, A. ; da Silva, G. J. ; Fossum, J. O. ; Bordallo, H. N. / The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite. I: Applied Clay Science. 2018 ; Bind 166. s. 288-298.

Bibtex

@article{5eacf8c3529840f99db68874e1550a23,
title = "The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite",
abstract = "Biocompatible encapsulated drug delivery materials are highly desired as they provide for controlled release of bioactive agents, thereby improving the effectiveness of medical treatments. Some of the key properties of better materials for drug delivery include high adsorptive capacity, which can be realized by smectites, a family of clay minerals. Here the influence of pH on encapsulation of the bioactive molecule ciprofloxacin (CIPRO), an antibiotic, by fluorohectorite (FHt), a synthetic smectite, was investigated. Aspects of the clay structure itself were also investigated. By means of X-ray powder diffraction (XRD), thermogravimetric analysis coupled to Fourier transform infrared spectroscopy (TGA/FTIR) and inelastic neutron scattering (INS), it is demonstrated that the capture of ciprofloxacin is more efficient at acidic pH. Geometric considerations based on the XRD results and mass calculations based on the TGA results provided evidence that at acidic pH, the CIPRO-FHt complex contained one CIPRO molecule per unit cell, while at neutral pH the CIPRO content was about half, despite having similar interlayer volume available. Finally it is shown that adsorption of CIPRO by FHt facilitated removal of residual water from the interlayer, providing additional evidence that intercalation is the main adsorptive mechanism at acidic pH. These results lead to a deeper understanding concerning the capture of amphoteric drug molecules by smectites, as well as concerning their molecular interactions, which may lead to more feasible application of clay minerals as a carrier for drug molecules.",
keywords = "Ciprofloxacin, Clay mineral, Drug carrier, Drug delivery, Fluorohectorite, Smectite",
author = "{dos Santos}, {E. C.} and Gates, {W. P.} and L. Michels and F. Juranyi and A. Mikkelsen and {da Silva}, {G. J.} and Fossum, {J. O.} and Bordallo, {H. N.}",
year = "2018",
month = "12",
day = "15",
doi = "10.1016/j.clay.2018.09.029",
language = "English",
volume = "166",
pages = "288--298",
journal = "Applied Clay Science",
issn = "0169-1317",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The pH influence on the intercalation of the bioactive agent ciprofloxacin in fluorohectorite

AU - dos Santos, E. C.

AU - Gates, W. P.

AU - Michels, L.

AU - Juranyi, F.

AU - Mikkelsen, A.

AU - da Silva, G. J.

AU - Fossum, J. O.

AU - Bordallo, H. N.

PY - 2018/12/15

Y1 - 2018/12/15

N2 - Biocompatible encapsulated drug delivery materials are highly desired as they provide for controlled release of bioactive agents, thereby improving the effectiveness of medical treatments. Some of the key properties of better materials for drug delivery include high adsorptive capacity, which can be realized by smectites, a family of clay minerals. Here the influence of pH on encapsulation of the bioactive molecule ciprofloxacin (CIPRO), an antibiotic, by fluorohectorite (FHt), a synthetic smectite, was investigated. Aspects of the clay structure itself were also investigated. By means of X-ray powder diffraction (XRD), thermogravimetric analysis coupled to Fourier transform infrared spectroscopy (TGA/FTIR) and inelastic neutron scattering (INS), it is demonstrated that the capture of ciprofloxacin is more efficient at acidic pH. Geometric considerations based on the XRD results and mass calculations based on the TGA results provided evidence that at acidic pH, the CIPRO-FHt complex contained one CIPRO molecule per unit cell, while at neutral pH the CIPRO content was about half, despite having similar interlayer volume available. Finally it is shown that adsorption of CIPRO by FHt facilitated removal of residual water from the interlayer, providing additional evidence that intercalation is the main adsorptive mechanism at acidic pH. These results lead to a deeper understanding concerning the capture of amphoteric drug molecules by smectites, as well as concerning their molecular interactions, which may lead to more feasible application of clay minerals as a carrier for drug molecules.

AB - Biocompatible encapsulated drug delivery materials are highly desired as they provide for controlled release of bioactive agents, thereby improving the effectiveness of medical treatments. Some of the key properties of better materials for drug delivery include high adsorptive capacity, which can be realized by smectites, a family of clay minerals. Here the influence of pH on encapsulation of the bioactive molecule ciprofloxacin (CIPRO), an antibiotic, by fluorohectorite (FHt), a synthetic smectite, was investigated. Aspects of the clay structure itself were also investigated. By means of X-ray powder diffraction (XRD), thermogravimetric analysis coupled to Fourier transform infrared spectroscopy (TGA/FTIR) and inelastic neutron scattering (INS), it is demonstrated that the capture of ciprofloxacin is more efficient at acidic pH. Geometric considerations based on the XRD results and mass calculations based on the TGA results provided evidence that at acidic pH, the CIPRO-FHt complex contained one CIPRO molecule per unit cell, while at neutral pH the CIPRO content was about half, despite having similar interlayer volume available. Finally it is shown that adsorption of CIPRO by FHt facilitated removal of residual water from the interlayer, providing additional evidence that intercalation is the main adsorptive mechanism at acidic pH. These results lead to a deeper understanding concerning the capture of amphoteric drug molecules by smectites, as well as concerning their molecular interactions, which may lead to more feasible application of clay minerals as a carrier for drug molecules.

KW - Ciprofloxacin

KW - Clay mineral

KW - Drug carrier

KW - Drug delivery

KW - Fluorohectorite

KW - Smectite

U2 - 10.1016/j.clay.2018.09.029

DO - 10.1016/j.clay.2018.09.029

M3 - Journal article

AN - SCOPUS:85054166146

VL - 166

SP - 288

EP - 298

JO - Applied Clay Science

JF - Applied Clay Science

SN - 0169-1317

ER -

ID: 203939173