Table 1.
Comparative overview of FCC materials used in this study.
Fig 1.
A) 30 w/w% amoxicillin-loaded Omyapharm suspended in a solution of EC-N100 dissolved in toluene: ethanol mixture, and B) a film coated on a LDPE substrate.
Fig 2.
Configuration of the FCC–ethyl cellulose film sample used for release testing.
The film was perforated with pin-sized holes to facilitate uniform contact with the release medium. A stainless-steel wire was threaded through the perforations to hold the film in a coiled geometry during immersion in the release beaker, ensuring stable positioning and full exposure to the aqueous medium.
Table 2.
Calculated and measured amoxicillin loading values in porous particles by TGA.
Fig 3.
The amoxicillin release curves in water from 15 w/w% (red circles) and 30 w/w% (blue squares) amoxicillin loaded FCC fines.
Fig 4.
Amoxicillin release in water from 30w/w% amoxicillin-loaded FCC granules (blue squares) compared to pure amoxicillin powder (black circles).
The red line is the fitting curve from 3 to 3.6 min. Data shown corresponds to one representative experiment.
Fig 5.
Diffraction pattern for amoxicillin loaded in FCC fines (continuous red curve), amoxicillin powder (continuous black curve) and FCC fines reference (dashed black curve).
Curves have been offset by a constant value for easier visualization.
Fig 6.
Normalized diffractograms of pure amoxicillin as compared to amoxicillin precipitated by solvent evaporation (A) and loaded in FCC fines (B); diffractograms in (B) have been offset by a constant value for easier visualization. High resolution map of the amoxicillin loaded in FCC fines (C): bright pixels indicate the presence of amoxicillin. The diffractograms displayed in (B) are extracted from the points annotated in (C).
Fig 7.
SEM images of a) FCC fines, b) 15 w/w% amoxicillin-loaded FCC fines, and c) powder amoxicillin.
Fig 8.
Amoxicillin release over time from the following films: Omyapharm particles loaded with amoxicillin (blue), Omyapharm particles and amoxicillin mixture (green) – as a reference.
Data shown represents a single representative experiment for each film.
Fig 9.
The differential release profile of the films made from amoxicillin loaded in Omyapharm particles (blue) and Omyapharm particles and amoxicillin mixture (green) for A) month 1 and B) month 2-5.