In vitro release kinetics of polycaprolactone encapsulated plant extract fabricated by supercritical antisolvent process and solvent evaporation method

2012 ◽  
Vol 62 ◽  
pp. 219-225 ◽  
Author(s):  
Ozlem Yesil-Celiktas ◽  
Emel Oyku Cetin-Uyanikgil
Keyword(s):  
Plant Extract ◽  
Release Kinetics ◽  
In Vitro Release ◽  
Solvent Evaporation ◽  
Solvent Evaporation Method ◽  
Evaporation Method ◽  
Supercritical Antisolvent ◽  
Kinetics Of ◽  
Vitro Release

scholarly journals Formulation development and evaluation of Glibenclamide loaded Eudragit RLPO microparticles

2013 ◽  
Vol 2 (12) ◽  
pp. 196-201 ◽  
Author(s):  
Balagani Pavan Kumar ◽  
Irisappan Sarath Chandiran ◽  
Korlakunta Narasimha Jayaveera
Keyword(s):  
Particle Size ◽  
Encapsulation Efficiency ◽  
In Vitro Release ◽  
Solvent Evaporation ◽  
Solvent Evaporation Method ◽  
Evaporation Method ◽  
Release Studies ◽  
Vitro Release ◽  
Eudragit Rlpo

The objective of the present investigation was to formulate and evaluate microencapsulated Glibenclamide produced by the emulsion – solvent evaporation method. Microparticles were prepared using Eudragit RLPO by emulsion solvent evaporation method and characterized for their micromeritic properties, encapsulation efficiency, particle size, drug loading, FTIR, DSC, SEM analysis. In vitro release studies were performed in phosphate buffer (pH 7.4). Stability studies were conducted as per ICH guidelines. The resulting microparticles obtained by solvent evaporation method were free flowing in nature. The mean particle size of microparticles ranges from 134.49 – 179.72 µm and encapsulation efficiency ranges from 92.30-98.32%. The infrared spectra and differential scanning calorimetry thermographs confirmed the stable character of Glibenclamide in the drug-loaded microparticles. Scanning electron microscopy revealed that the microparticles were spherical in nature. In vitro release studies revealed that the drug release was sustained up to 12 hrs. The release kinetics of Glibenclamide from optimized formulation followed zero-order and peppas mechanism. The mechanism of drug release from the microparticles was found to be non-Fickian type. Eudragit RLPO microparticles containing Glibenclamide could be prepared successfully by using an emulsion solvent evaporation technique, which will not only sustain the release of drug but also manage complicacy of the diabetes in a better manner.DOI: http://dx.doi.org/10.3329/icpj.v2i12.17016 International Current Pharmaceutical Journal, November 2013, 2(12): 196-201

Formulation and In Vitro Release Kinetics of Mucoadhesive Blend Gels Containing Matrine for Buccal Administration

2017 ◽  
Vol 19 (1) ◽  
pp. 470-480 ◽  
Author(s):  
Xiaojin Chen ◽  
Jun Yan ◽  
Shuying Yu ◽  
Pingping Wang
Keyword(s):  
Release Kinetics ◽  
In Vitro Release ◽  
Kinetics Of ◽  
Vitro Release

scholarly journals FORMULATION AND EVALUATION OF FLOATING MICROSPHERES OF CIPROFLOXACIN BY SOLVENT EVAPORATION METHOD USING DIFFERENT POLYMERS

2021 ◽  
pp. 101-108
Author(s):  
KAUSLYA ARUMUGAM ◽  
PAYAL D. BORAWAKE ◽  
JITENDRA V. SHINDE
Keyword(s):  
Particle Size ◽  
Drug Release ◽  
Release Kinetics ◽  
Methyl Cellulose ◽  
Entrapment Efficiency ◽  
Solvent Evaporation ◽  
Angle Of Repose ◽  
Solvent Evaporation Method ◽  
Evaporation Method

Objective: The main intention of this research was to formulate and evaluate floating microspheres of ciprofloxacin using different polymers to prolong gastric residence time. Methods: The microspheres were formulated by the solvent evaporation method using different ratios of polymers like carbopol 940, ethylcellulose, and Hydroxy Propyl Methyl Cellulose K4M. Further, the floating microspheres were evaluated for micromeritic properties like bulk density, tapped density, angle of repose, etc., percentage yield, particle size, entrapment efficiency, floating capacity, in vitro drug release study, release kinetics, drug content, swelling index, and Fourier Transform Infrared Spectroscopy (FTIR) (Compatibility studies). Results: The ciprofloxacin microspheres showed the good flowing property. The particle size ranged from 258.1±2.21 µm to 278±2.86 µm and entrapment efficiency ranged from 63.17±0.43% to 89.90±1.32%. The IR spectrum revealed that there was no interaction between the drug and polymer. F7 formulation was found to be the best formulation. Drug release was found to be 90.70±0.89% i.e. in a controlled manner at the end of 10 h. Conclusion: The floating microspheres were prepared successfully and the results clearly stated that prepared ciprofloxacin microspheres may be safe and effective controlled drug delivery over an extended period which can increase bioavailability, patient compliance, and decrease dosing frequency.

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