4.5 Article

Optimization of supercritical carbon dioxide fluid extraction of seized cannabis and self-emulsifying drug delivery system for enhancing the dissolution of cannabis extract

Journal

JOURNAL OF SUPERCRITICAL FLUIDS
Volume 179, Issue -, Pages -

Publisher

ELSEVIER
DOI: 10.1016/j.supflu.2021.105423

Keywords

Cannabis; Optimization; Self-emulsifying drug delivery system; Supercritical carbon dioxide fluid extraction

Funding

  1. Research Institute of Rangsit University [93/2562]

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This study optimized the extraction of cannabis using supercritical carbon dioxide fluid extraction (SFE) and prepared it as a self-emulsifying drug delivery system (SEDDS) to improve its dissolution. The highest levels of cannabidiol and Delta(9)-tetrahydrocannabinol were achieved at 18 MPa and 40 degrees C without ethanol. The SEDDS formulation with the smallest droplet size and emulsification time was composed of a 45:40:20 mass ratio of (2:1 Tween (R) 80:Span (R) 80):coconut oil:cannabis extract.
This work sought to optimize the extraction of seized cannabis by supercritical carbon dioxide fluid extraction (SFE). Due to its low water solubility, the cannabis extract was prepared as a self-emulsifying drug delivery system (SEDDS) to enhance its dissolution. The highest cannabidiol and Delta(9)-tetrahydrocannabinol contents were achieved at 18 MPa and 40 degrees C without the use of ethanol. The SEDDS droplet size, polydispersity index, D10, D50, D90, span, zeta potential, and emulsification time were evaluated to identify the formulation with minimized droplet size and emulsification time. The optimal formulation was composed of a 45:40:20 mass ratio of (2:1 Tween (R) 80:Span (R) 80):coconut oil:cannabis extract. The optimized SEDDS successfully enhanced the dissolution of cannabis extract obtained from SFE.

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