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Olabode O, Dike H, Olaniyan D, Oni B, Faleye M. Experimental Investigation of the Effect of Surfactant-Polymer Flooding on Enhanced Oil Recovery for Medium Crude Oil. Polymers (Basel) 2024; 16:1674. [PMID: 38932023 PMCID: PMC11207569 DOI: 10.3390/polym16121674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/15/2024] [Accepted: 05/17/2024] [Indexed: 06/28/2024] Open
Abstract
High technical and financial risks are involved in exploring and exploiting new fields; hence, greater focus has placed on the development of environmentally friendly, cost-effective, and enhanced oil recovery (EOR) options for existing fields. For reservoirs producing high-density crudes and those with high interfacial tensions, water flooding is usually less effective due to density differences-hence the advent of polymer and surfactant flooding. For cost-effective and eco-friendly EOR solutions, a biopolymer and a surfactant synthesized from Jatropha seeds are used in this study to determine their effectiveness in increasing the oil recovery during core flooding analysis. The experiment involved an initial water flooding that served as the base cases of three weight percentages of polymers and polymeric surfactant solutions. The results for the polymer flooding of 1 wt%, 1.5 wt%, and 2 wt% showed an incremental oil recovery in comparison to water flooding of 16.8%, 17%, and 26%, while the polymeric surfactant mixtures of 5 wt% of surfactant and 1 wt%, 1.5 wt%, and 2 wt% of a polymer recorded 16.5%, 22.3%, and 28.8%, and 10 wt% of surfactant and 1 wt%, 1.5 wt%, and 2 wt% of a polymer recorded incremental oil recoveries of 20%, 32.9%, and 38.8%, respectively.
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Affiliation(s)
- Oluwasanmi Olabode
- Department of Petroleum Engineering, Covenant University, Ota 112104, Ogun State, Nigeria; (H.D.); (D.O.); (B.O.)
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Choi MJ, Woo MR, Baek K, Kim JS, Kim JO, Choi YS, Choi HG, Jin SG. Novel rivaroxaban-loaded microsphere systems with different surface microstructure for enhanced oral bioavailability. Drug Deliv Transl Res 2024; 14:655-664. [PMID: 37667087 DOI: 10.1007/s13346-023-01420-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/15/2023] [Indexed: 09/06/2023]
Abstract
This study compares rivaroxaban-loaded polymeric microsphere systems with three types of surface microstructure. Three types of polymeric microspheres loaded with rivaroxaban were fabricated using a spray-drying technique: solvent-evaporated, surface-attached, and solvent-wet microspheres, depending on whether the drug and additives used are soluble in the solvent. The solvent-evaporated and surface-attached microspheres had a rivaroxaban/polyvinylpyrrolidone/sodium lauryl sulfate (SLS) weight ratio of 1/0.25/2.2, and the solvent-wetted microspheres contained rivaroxaban/polyvinyl alcohol/SLS in equal weight ratio (1/0.25/2). The physicochemical properties of the microspheres were evaluated using scanning electron microscopy, powder X-ray diffraction, differential scanning calorimetry, and particle size distribution analysis. The aqueous solubility and dissolution rate of rivaroxaban in the three types of microspheres were compared to those of the drug powder. The solvent-evaporated, surface-attached, and solvent-wetted microspheres were approximately 208, 140, and 172 times as soluble as the drug powder, and the final dissolution rate (120 min) was approximately 5, 2, and 4 times that of the drug powder, respectively. In addition, the oral bioavailability increased by approximately 2, 1.3, and 1.6 times compared to that of the drug powder (area under drug concentration-time curve: 2101.3 ± 314.8, 1325.2 ± 333.3, and 1664.0 ± 102.6 h·ng/mL, respectively). Finally, the solvent-evaporated microspheres showed the greatest improvement (solvent evaporating microspheres > solvent wetted microspheres > surface-attached microspheres ≥ drug powder). Therefore, the solvent-evaporated microspheres may represent a novel oral dosage form that improves the oral bioavailability of rivaroxaban, a poorly soluble drug.
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Affiliation(s)
- Min-Jong Choi
- Department of Pharmaceutical Engineering, Dankook University, 119 Dandae-Ro, Dongnam-Gu, Cheonan, 31116, South Korea
| | - Mi Ran Woo
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-Ro, Sangnok-Gu, Ansan, 15588, South Korea
| | - Kyungho Baek
- Department of Pharmaceutical Engineering, Dankook University, 119 Dandae-Ro, Dongnam-Gu, Cheonan, 31116, South Korea
| | - Jung Suk Kim
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-Ro, Sangnok-Gu, Ansan, 15588, South Korea
| | - Jong Oh Kim
- College of Pharmacy, Yeungnam University, 214-1 Dae-Dong, Gyongsan, 38541, South Korea
| | - Yong Seok Choi
- College of Pharmacy, Dankook University, 119 Dandae-Ro, Dongnam-Gu, Cheonan, 31116, South Korea
| | - Han-Gon Choi
- College of Pharmacy, Hanyang University, 55 Hanyangdaehak-Ro, Sangnok-Gu, Ansan, 15588, South Korea.
| | - Sung Giu Jin
- Department of Pharmaceutical Engineering, Dankook University, 119 Dandae-Ro, Dongnam-Gu, Cheonan, 31116, South Korea.
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Pisay M, Padya S, Mutalik S, Koteshwara KB. Stability Challenges of Amorphous Solid Dispersions of Drugs: A Critical Review on Mechanistic Aspects. Crit Rev Ther Drug Carrier Syst 2024; 41:45-94. [PMID: 38037820 DOI: 10.1615/critrevtherdrugcarriersyst.2023039877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
The most common drawback of the existing and novel drug molecules is their low bioavailability because of their low solubility. One of the most important approaches to enhance the bioavailability in the enteral route for poorly hydrophilic molecules is amorphous solid dispersion (ASD). The solubility of compounds in amorphous form is comparatively high because of the availability of free energy produced during formulation. This free energy results in the change of crystalline nature of the prepared ASD to the stable crystalline form leading to the reduced solubility of the product. Due to the intrinsic chemical and physical uncertainty and the restricted knowledge about the interactions of active molecules with the carriers making, this ASD is a challenging task. This review focused on strategies to stabilize ASD by considering the various theories explaining the free-energy concept, physical interactions, and thermal properties. This review also highlighted molecular modeling and machine learning computational advancement to stabilize ASD.
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Affiliation(s)
- Muralidhar Pisay
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Singh Padya
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Srinivas Mutalik
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
| | - Kunnatur B Koteshwara
- Department of Pharmaceutics, Manipal College of Pharmaceutical Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka State, India
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Sabouri S, Shayanfar A. Effects of Surfactant and Polymer on Thermodynamic Solubility and Solution Stability of Carbamazepine–Cinnamic Acid Cocrystal. Pharm Chem J 2022. [DOI: 10.1007/s11094-022-02726-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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Shayanfar A, Shayanfar S, Jouyban A, Velaga S. Prediction of cocrystal formation between drug and coformer by simple structural parameters. JOURNAL OF REPORTS IN PHARMACEUTICAL SCIENCES 2022. [DOI: 10.4103/jrptps.jrptps_172_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Sohn JS, Choi JS. Solubilization of tadalafil using a tartaric acid and chitosan-based multi-system. Int J Biol Macromol 2020; 168:866-874. [PMID: 33249149 DOI: 10.1016/j.ijbiomac.2020.11.152] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/13/2020] [Accepted: 11/23/2020] [Indexed: 12/15/2022]
Abstract
Solubilization studies of tadalafil (TDF) have recently improved the dissolution (%) using weak acids and bases in our group. However, the weak acid formulations have a low dissolution (%) of TDF as limitation. Thus, the purpose of this study was to improve the dissolution (%) of TDF over 90% in distilled water (DW) by weak acid-chitosan based multi-system. The SD formulation (SD11: TDF, tartaric acid, chitosan, Aerosil®200, and PVP/VA S-630 in a 1:2:1:1:2 weight ratio) showed higher dissolution (%) of TDF by 5.0-, 6.0-, and 5.8-fold at 60 min than that of Cialis® in DW and pH 1.2 and pH 6.8 buffers, respectively. The physical properties of the SD11 formulation were changed. Moreover, the SD11 formulation maintained stability for 3 months. In conclusion, the solubilization of TDF using chitosan was successfully performed for the first time.
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Affiliation(s)
- Jeong Sun Sohn
- College of General Education, Chosun University, Gwangju 61452, Republic of Korea
| | - Jin-Seok Choi
- Department of Medical Management, Chodang University, 380 Muan-ro, Muan-eup, Muan-gun, Jeollanam-do 58530, Republic of Korea.
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