Development of a Solid Formulation Containing a Microemulsion of a Novel <i>Artemisia</i> Extract with Nematocidal Activity for Oral Administration

• Main Authors: Ines Perez-Roman (Author), Filip Kiekens (Author), Damian Cordoba-Diaz (Author), Juan Jose Garcia-Rodriguez (Author), Manuel Cordoba-Diaz (Author)
• Format: Book
• Published: MDPI AG, 2020-09-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Summary

Background: Intestinal nematode infections are usually treated with benzimidazole drugs, but the emergence of resistance to these drugs has led to an increasing demand of new anthelmintic strategies. A new microemulsion formulation (ME) consisting of an <i>Artemisia absinthium</i> extract with proven nematocidal efficacy was previously developed. The aim of our study is to implement a D-optimal mixture design methodology to increase the amount of a silica material (loaded with this ME) in a tablet formulation, considering its tensile strength and disintegration time. Methods: 16 experiments or combinations of the 6 tablet components (loaded silica, microcrystalline cellulose, polyvinylpyrrolidone, croscarmellose, Syloid^® 244 FP and magnesium stearate) were assessed. Tensile strength and disintegration time models were developed, and an optimization process was carried out. Results: Tensile strength was improved by increasing the polyvinylpyrrolidone content, while croscarmellose decreased the disintegration time. The optimized powder mixture contains 49.7% <i>w</i>/<i>w</i> of the loaded silica material. A compression force of 12 kN was applied to the powder mixture to form tablets with a tensile strength of 2.0 MPa and a disintegration time of 3.8 min. Conclusions: Our results show that D-optimal mixture designs provide a promising approach to formulate liquid-loaded silica materials.

Item Description

10.3390/pharmaceutics12090873
1999-4923