<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:creator>Adler C</dc:creator>
  <dc:creator>Teleki A</dc:creator>
  <dc:creator>Kuentz M</dc:creator>
  <dc:date>2017</dc:date>
  <dc:description xmlns:ns0="xml" ns0:lang="en">The formulation of lipophilic and hydrophobic compounds is a challenge for the pharmaceutical industry and it requires the development of complex formulations. Our first aim was to investigate hot-melt extrudate microstructures by means of multifractal analysis using scanning electron microscopy imaging. Since the microstructure can affect solid dosage form performance such as mechanical properties, a second objective was to study the influence of the type of adsorbent and of the presence of an amorphous compound on extrudate hardness. β-Carotene (BC) was chosen as poorly water-soluble model compound. Formulations containing a polymer, a lipid and two different silica based inorganic carriers were produced by hot-melt extrusion. Based on scanning electron microscopy/energy dispersive X-ray spectroscopy, the obtained images were analyzed using multifractal formalism. The breaking force of the strands was assessed by a three point bending test. Multifractal analysis and three point bending results showed that the nature of interparticle interactions in the inorganic carrier as well as the presence of amorphous BC had an influence on the microstructure and thus on the mechanical performance. The use of multifractal analysis and the study of the mechanical properties were complementary to better characterize and understand complex formulations obtained by hot-melt extrusion.</dc:description>
  <dc:identifier>https://sonar.ch/global/documents/246847</dc:identifier>
  <dc:language>eng</dc:language>
  <dc:relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.ijpharm.2017.03.014</dc:relation>
  <dc:relation>info:eu-repo/semantics/altIdentifier/pmid/28286079</dc:relation>
  <dc:source>International journal of pharmaceutics. - 2017</dc:source>
  <dc:subject xmlns:ns1="xml" ns1:lang="en">Hot-melt extrusion</dc:subject>
  <dc:subject xmlns:ns2="xml" ns2:lang="en">Inorganic carrier</dc:subject>
  <dc:subject xmlns:ns3="xml" ns3:lang="en">Mechanical properties</dc:subject>
  <dc:subject xmlns:ns4="xml" ns4:lang="en">Multifractal</dc:subject>
  <dc:subject xmlns:ns5="xml" ns5:lang="en">Scanning electron microscopy</dc:subject>
  <dc:subject xmlns:ns6="xml" ns6:lang="en">Solid dispersion</dc:subject>
  <dc:subject xmlns:ns7="xml" ns7:lang="en">Calorimetry, Differential Scanning</dc:subject>
  <dc:subject xmlns:ns8="xml" ns8:lang="en">Drug Compounding</dc:subject>
  <dc:subject xmlns:ns9="xml" ns9:lang="en">Microscopy, Electron, Scanning</dc:subject>
  <dc:subject xmlns:ns10="xml" ns10:lang="en">Povidone</dc:subject>
  <dc:subject xmlns:ns11="xml" ns11:lang="en">Powder Diffraction</dc:subject>
  <dc:subject xmlns:ns12="xml" ns12:lang="en">Propylene Glycols</dc:subject>
  <dc:subject xmlns:ns13="xml" ns13:lang="en">Silicon Dioxide</dc:subject>
  <dc:subject xmlns:ns14="xml" ns14:lang="en">Spectrometry, X-Ray Emission</dc:subject>
  <dc:subject xmlns:ns15="xml" ns15:lang="en">Spectrum Analysis, Raman</dc:subject>
  <dc:subject xmlns:ns16="xml" ns16:lang="en">Suspensions</dc:subject>
  <dc:subject xmlns:ns17="xml" ns17:lang="en">X-Ray Diffraction</dc:subject>
  <dc:subject xmlns:ns18="xml" ns18:lang="en">beta Carotene</dc:subject>
  <dc:title xmlns:ns19="xml" ns19:lang="en">Multifractal and mechanical analysis of amorphous solid dispersions.</dc:title>
  <dc:type>http://purl.org/coar/resource_type/c_6501</dc:type>
</oai_dc:dc>