Formulation and evaluation of oral disintegrating films using a natural ingredient against Streptococcus mutans

Oral disintegrating films (ODFs) are one of the forms of drug delivery system with better patient compliance. The advantage is that it disintegrates quickly when placed on the tongue and has better bioavailability.

The aim of this study is to develop an ODF using Vaccinium oxycoccos and Plectranthus amboinicus targeting Streptococcus mutans.

This in vitro study was conducted at an institutional laboratory.

The chemical composition of aqueous extracts of Vaccinium oxycoccos and Plectranthus amboinicus was examined using gas chromatography (GC)-mass spectrometry (MS). Extracts were added at its minimal inhibitory concentration (MIC) into the hydroxy propylmethyl cellulose (HPMC) polymer matrix solution to develop active ODF. The study concentrated on assessing the physical properties such as thickness of film, PH of the film, folding endurance, swelling test, disintegration, and dissolution test. Color analysis, Fourier transform infrared (FTIR), spectroscopy, and scanning electron microscope (SEM) were the mechanical properties of the film assessed.

Data were analyzed statistically, one-way analysis of variance followed by post hoc analysis for the assessment of MIC. Descriptive statistics were performed for the analysis of film properties.

MIC was 25 μg/ml for Vaccinium oxycoccos and 50 μg/ml for Plectranthus amboinicus. Three percentage HPMC with 1% citric acid and 1% aspartame was used to develop a polymer matrix. Films pH was between 6 and 7. FTIR and SEM analysis were done to confirm the attachment of active compound in a polymer matrix.

Vaccinium oxycoccos and Plectranthus amboinicus showed good antibacterial activity, therefore could be a potent source to minimize the incidence of S. mutans.