Application of Supercritical Fluid and Compressed Gas in Pharmaceutical Technology

A special issue of Pharmaceutics (ISSN 1999-4923). This special issue belongs to the section "Pharmaceutical Technology, Manufacturing and Devices".

Deadline for manuscript submissions: closed (10 March 2022) | Viewed by 6322

Special Issue Editors


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Guest Editor
College of Pharmacy, Pusan National University, Busan, Korea
Interests: solubilisation and stabilization; micro-nanoparticle; supercritical fluid technology; dry powder inhaler (DPI); solid dispersion; polymorphism; solid-state characterization; lipid based formulation; controlled release formulation; PLGA Microspheres; bioavailability
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Guest Editor
College of Pharmacy, Pusan National University, 63 Busandaehak-ro, Geumjeong-gu, Busan 46241, Republic of Korea
Interests: sustained and controlled release formulation of drugs; quality by design; formulation and stabilization of emulsion, microemulsion and liposomes; solubilization techniques of poorly water-soluble drugs; polymorphism and cocrystal; coating and pelletization technology; targeted drug delivery system; microspheres and microcapsules; pharmacokinetics and bioequivalent study; drug stability; supercritical fluid technology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Supercritical fluids and compressed gases act as a solvent, antisolvent, solute, plasticizer, atomizing gas, and carrier fluid. Using these various mechanisms, supercritical fluids and compressed gases have been widely used in the application and development of various pharmaceutical processes, such as particle formation, atomization, mixing, drying, extraction, impregnation, melting, adsorption, milling, foaming, coating, extrusion, etc. Supercritical antisolvent, spray drying, fluid bed coating, and jet milling are typically included in these pharmaceutical processes. In addition, there have been promising advances in pharmaceutical technology using supercritical fluids and compressed gases through the application to various pharmaceutical drug delivery systems, such as solid dispersion, microsphere, dry powder inhaler, porous carrier, aerogel, and lipid-based formulations including solid lipid nanoparticle, nanostructured lipid carriers, and liposome. In recent years, some hybrid processes via a combination of supercritical fluids and compressed gases have also been introduced.

The aim of this Special Issue is to collect and introduce the recent developments and findings for all topics related to the application of supercritical fluid and compressed gas in pharmaceutical technology. Thus, this Special Issue devotes mainly applied aspects over the range from application in novel bioactive material to the development of novel pharmaceutical DDS and processes, using supercritical fluid and compressed gas. Applicable bioactive materials are not limited to drugs but may also include natural products having biological activity. A fundamental approach to explaining the applied results may also be included.

Dr. Heejun Park
Prof. Min-Soo Kim
Guest Editors

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Keywords

  • supercritical
  • compressed gas
  • solvent
  • antisolvent
  • solute
  • atomization
  • extraction
  • drying
  • drug delivery system
  • pharmaceutical process

Published Papers (2 papers)

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Research

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17 pages, 5272 KiB  
Article
Lessons Learned in Protein Precipitation Using a Membrane Emulsification Technique to Produce Reversible and Uniform Microbeads
by Sang-Koo Park, Ga Yeon Noh, Hyun Woo Yu, Eun Chae Lee, Junoh Jeong, Young-Min Park, Hyo-Kyung Han, Seong Hoon Jeong and Nam Ah Kim
Pharmaceutics 2021, 13(10), 1738; https://doi.org/10.3390/pharmaceutics13101738 - 19 Oct 2021
Cited by 4 | Viewed by 2085
Abstract
The effects of the manufacturing process and the regeneration of Shirasu porous glass (SPG) membranes were investigated on the reproducibility of protein precipitants, termed protein microbeads. Intravenous immunoglobulin (IVIG) was selected as a model protein to produce its microbeads in seven different cases. [...] Read more.
The effects of the manufacturing process and the regeneration of Shirasu porous glass (SPG) membranes were investigated on the reproducibility of protein precipitants, termed protein microbeads. Intravenous immunoglobulin (IVIG) was selected as a model protein to produce its microbeads in seven different cases. The results showed that the hydrophobically modified SPG membrane produced finer microbeads than the hydrophilic SPG membrane, but this was inconsistent when using the general regeneration method. Its reproducibility was determined to be mostly dependent on rinsing the SPG membrane prior to the modification and on the protein concentration used for emulsification. The higher concentration could foul and plug the membrane during protein release and thus the membrane must be washed thoroughly before hydrophobic modification. Moreover, the membrane regenerated by silicone resin dissolved in ethanol had better reproducibility than silicone resin dissolved in water. On the other hand, rinsing the protein precipitant with cold ethanol after the emulsification was not favorable and induced protein aggregation. With the addition of trehalose, the purity of the IVIG microbeads was almost the same as before microbeadification. Therefore, the regeneration method, protein concentration, and its stabilizer are key to the success of protein emulsification and precipitation using the SPG membrane. Full article
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30 pages, 1951 KiB  
Review
Pharmaceutical Applications of Supercritical Fluid Extraction of Emulsions for Micro-/Nanoparticle Formation
by Heejun Park, Jeong-Soo Kim, Sebin Kim, Eun-Sol Ha, Min-Soo Kim and Sung-Joo Hwang
Pharmaceutics 2021, 13(11), 1928; https://doi.org/10.3390/pharmaceutics13111928 - 14 Nov 2021
Cited by 11 | Viewed by 3677
Abstract
Micro-/nanoparticle formulations containing drugs with or without various biocompatible excipients are widely used in the pharmaceutical field to improve the physicochemical and clinical properties of the final drug product. Among the various micro-/nanoparticle production technologies, emulsion-based particle formation is the most widely used [...] Read more.
Micro-/nanoparticle formulations containing drugs with or without various biocompatible excipients are widely used in the pharmaceutical field to improve the physicochemical and clinical properties of the final drug product. Among the various micro-/nanoparticle production technologies, emulsion-based particle formation is the most widely used because of its unique advantages such as uniform generation of spherical small particles and higher encapsulation efficiency (EE). For this emulsion-based micro-/nanoparticle technology, one of the most important factors is the extraction efficiency associated with the fast removal of the organic solvent. In consideration of this, a technology called supercritical fluid extraction of emulsions (SFEE) that uses the unique mass transfer mechanism and solvent power of a supercritical fluid (SCF) has been proposed to overcome the shortcomings of several conventional technologies such as solvent evaporation, extraction, and spray drying. This review article presents the main aspects of SFEE technology for the preparation of micro-/nanoparticles by focusing on its pharmaceutical applications, which have been organized and classified according to several types of drug delivery systems and active pharmaceutical ingredients. It was definitely confirmed that SFEE can be applied in a variety of drugs from water-soluble to poorly water-soluble. In addition, it has advantages such as low organic solvent residual, high EE, desirable release control, better particle size control, and agglomeration prevention through efficient and fast solvent removal compared to conventional micro-/nanoparticle technologies. Therefore, this review will be a good resource for determining the applicability of SFEE to obtain better pharmaceutical quality when researchers in related fields want to select a suitable manufacturing process for preparing desired micro-/nanoparticle drug delivery systems containing their active material. Full article
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