Controlled Release Kinetics of Captopril From Tableted Microcapsules

1988 ◽  
Vol 14 (4) ◽  
pp. 545-560 ◽  
Author(s):  
J. Singh ◽  
D. H. Robinson
Keyword(s):  
Controlled Release ◽  
Release Kinetics ◽  
Kinetics Of

Mathematical Modeling of Controlled-Release Kinetics of Herbicides in a Dynamic-Water-Bath System

2001 ◽  
pp. 563-574
Author(s):  
Félix M. Pereira ◽  
Adilson R. Gonçalves ◽  
André Ferraz ◽  
Flávio T. Silva ◽  
Samuel C. Oliveira
Keyword(s):  
Mathematical Modeling ◽  
Controlled Release ◽  
Release Kinetics ◽  
Water Bath ◽  
Kinetics Of

Compressed nanofibrous oral tablets: An ingenious way for controlled release kinetics of Amphotericin-B loaded gelatin nanofibers

2019 ◽  
Vol 19 ◽  
pp. 100367 ◽  
Author(s):  
Anindita Laha ◽  
Mrunalini K. Gaydhane ◽  
Chandra S. Sharma ◽  
Saptarshi Majumdar
Keyword(s):  
Controlled Release ◽  
Amphotericin B ◽  
Release Kinetics ◽  
Kinetics Of

Evaluation of Kollicoat SR 30D and Kollicoat EMM 30D as Matrix Former for Controlled Release Drug Delivery

1970 ◽  
Vol 4 (1) ◽  
Author(s):  
Mohammad Salim Hossain ◽  
Reza-ul Jalil ◽  
Selim Reza ◽  
Mohiuddin Abdul Quadir ◽  
CF Hossain
Keyword(s):  
Controlled Release ◽  
Drug Release ◽  
Matrix Effects ◽  
Release Kinetics ◽  
Polymeric Systems ◽  
Release Drug ◽  
The Matrix ◽  
Kinetics Of ◽  
Order Pattern ◽  
Drug Liberation

Efficiency of kollicoat EMM 30 D and SR 30D as matrix forming material was investigated. It was found that, theophylline loaded granules prepared with these two polymers could not sustain drug release for a significant period of time. However, compression of these granules into tablets retarded drug release for up to 8 hours. Release was faster from EMM 30D polymeric system than that from SR 30D matrix. Effects of fillers and rate modifiers on drug liberation have been assessed. Incorporation of Avicel RC 591 and starch caused substantial release of theophylline from both the polymeric systems. Avicel PH 101 intensified the retardation effect of both EMM 30D and SR 30D on theophylline release. HPMC 50 cps, when added to the matrix, caused the release of theophylline to follow near zero order pattern. Increasing the content of HPMC in both EMM 30D and SR 30D compressed tablets decreased the rate and extent of theophylline release. In the presence of excipients, no significant differences between rate and extent of drug release from EMM 30D and SR 30D systems were found. Biexponential equation was applied to explore and explain drug release kinetics. It was found that drug release followed Fickian or case I kinetics from EMM 30D compressed tablet while anomalous or non-fickian kinetics of drug release was observed for SR 30D system. Key words: Kolliocoat SR 30D, Kollicoat EMM 30D, Theophylline, Matrix system, Controlled release Dhaka Univ. J. Pharm. Sci. Vol.4(1) 2005 The full text is of this article is available at the Dhaka Univ. J. Pharm. Sci. website

Mathematical Modeling of Controlled-Release Kinetics of Herbicides in a Dynamic-Water-Bath System

2001 ◽  
Vol 91-93 (1-9) ◽  
pp. 563-574 ◽  
Author(s):  
Félix M. Pereira ◽  
Adilson R. Gonçalves ◽  
André Ferraz ◽  
Flávio T. Silva ◽  
Samuel C. Oliveira
Keyword(s):  
Mathematical Modeling ◽  
Controlled Release ◽  
Release Kinetics ◽  
Water Bath ◽  
Kinetics Of

scholarly journals Ordered mesoporous silicates as matrices for controlled release of drugs

2010 ◽  
Vol 60 (4) ◽  
pp. 373-385 ◽  
Author(s):  
Tina Ukmar ◽  
Odon Planinšek
Keyword(s):  
Controlled Release ◽  
Uv Light ◽  
Release Kinetics ◽  
Stimuli Responsive ◽  
Mesoporous Silicates ◽  
Ordered Mesoporous ◽  
Poorly Soluble ◽  
Model Drug ◽  
Kinetics Of

Ordered mesoporous silicates as matrices for controlled release of drugs Interest in and thereby also development of ordered mesoporous silicates as drug delivery devices have grown immensely over the past few years. On hand selected cases from the literature, the power of such systems as delivery devices has been established. Specifically, it is shown how it is possible to enhance the release kinetics of poorly soluble drugs by embedding them in mesoporous silicates. Further critical factors governing the structure and release of the model drug itraconazole incorporated in an SBA-15 matrix are briefly reviewed. The possibility of functionalizing the surface of mesoporous matrices also under harsher conditions offers a broad platform for the design of stimuli-responsive drug release, including pH responsive systems and systems which respond to the presence of specific ions, reducing agents, magnetic field or UV light, whose efficiency and biocompatibility has been established in vitro.

scholarly journals Controlled Release Fertilizer Encapsulated by Glutaraldehyde-Crosslinked Chitosan Using Freeze-Drying Method

2020 ◽  
Vol 20 (6) ◽  
pp. 1414
Author(s):  
Adhitasari Suratman ◽  
Dwi Ratih Purwaningsih ◽  
Eko Sri Kunarti ◽  
Agus Kuncaka
Keyword(s):  
Controlled Release ◽  
Environmental Pollution ◽  
Freeze Drying ◽  
Release Kinetics ◽  
Drying Method ◽  
Air Drying ◽  
Controlled Release Fertilizer ◽  
Npk Fertilizer ◽  
Crosslinked Chitosan ◽  
Kinetics Of

A new encapsulation of NPK fertilizer hydrogel granules made from glutaraldehyde crosslinked chitosan has been successfully fabricated. This designed fertilizer was aimed to maximize the fertilizing process in the soil, as the environmental pollution affected by the excess release of the nutrients can be prevented. The granule was prepared from biodegradable chitosan crosslinked with glutaraldehyde by applying a method of air and freeze-drying. The release test proved that this designed fertilizer showed a good performance as a Controlled Release Fertilizer (CRF) in which the hydrogel granules could absorb and deposit large amounts of NPK. Later on, they could also release large amounts of NPK as well, unlike several types of CRFs. The release percentage of NPK out of the granules tended to decrease with an increase of pH at a range close to the average pH of the soil, which is neutral to base. Comparing two methods, the freeze-drying technique, which yields a bigger pore size, showed a higher release percentage than air-drying. The release kinetics of the granules followed the Korsmeyer-Peppas model.

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