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An overview of modified release chitosan, alginate and eudragit RS microparticles

An overview of modified release chitosan, alginate and eudragit RS microparticles

In this paper, different formulation types of microparticulate systems such as beads, microbeads, microspheres and microsponges using to special attention chitosan, alginate and eudragit RS 100 are reviewed. Chitosan and alginates are natural, anionic or cationic, biocompatible, biodegredable and non-toxic polymers. They have excellent potential for pharmaceutical and biopharmaceutical applications. Eudragit RS is an acrylic copolymer and it has well-established mucoadhesive characteristics. It is still being used as a sustained release coating materials in pharmaceutical field. Various techniques used for preparing chitosan, alginate and eudragit RS microparticles have also been reviewed. This review also includes non steoridal antiinflammatorydrug (NSAID) microparticle formulations which have been prepared with these polymers to minimize side effects and to obtain controlled release drug delivery systems. Moreover, literatures and patents underline a widespread use of alginate, chitosan and eudragit RS are covered in this paper.

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249 views • 18 slides
Determination of mass transfer limitations in E. coli encapsulated beads

Determination of mass transfer limitations in E. coli encapsulated beads

Determination of mass transfer limitations in E. coli encapsulated beads. From Team M-4 Leader: Waifong Chan George Hammer Yimin Tang. Introduction of Cell Encapsulation. Commonly employed in bioprocesses to encapsulate bioactive species. Immobilize the cells.

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313 views • 17 slides
Application of immobilized banana peels Musa paradisiaca L. into calcium alginate beads for removal of chromium VI from

Application of immobilized banana peels Musa paradisiaca L. into calcium alginate beads for removal of chromium VI from

The capacity of banana peels Musa paradisiaca L. immobilized into calcium alginate beads to remove chromium VI ions from aqueous solution was studied. Immobilization enhances sorption of chromium VI and repetitive use of sorbent could be achieved. The immobilized banana peels in to calcium alginate beads was characterized by FTIR, SEM and XRD. The influence of several operating experimental parameters such as solution pH, biosorbent dose concentration, initial chromium VI ions concentration, contact time, temperature and agitation rate determine the efficiency of metal uptake by biosorbent. Desorption efficiency of banana peels immobilized in to calcium alginate beads was highest for sulphuric acid followed by hydrochloric acid and nitric acid. The equilibrium isotherm data were comparing by using the Langmuir, Freundlich, DKR and Temkin adsorption isotherm models in which Langmuir isotherm was found to be fitted best. The Kinetics of sorption of chromium VI were described by a pseudo First order kinetic, pseudo second order kinetic, Elovich and Weber and Morris intra particle diffusion model in which pseudo second order model was found to be fitted best. Thermodynamic studies were also carried out. The results showed that immobilized banana peels Musa paradisiaca L. in to calcium alginate beads was a low cost promising sorbent for sequester of chromium VI from wastewater. Amit S. Sharma | Prof. Dr. Satish A. Bhalerao "Application of immobilized banana peels (Musa paradisiaca L.) into calcium alginate beads for removal of chromium (VI) from aqueous solution" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-2 , February 2018, URL: https://www.ijtsrd.com/papers/ijtsrd9665.pdf Paper URL: http://www.ijtsrd.com/other-scientific-research-area/enviormental-science/9665/application-of-immobilized-banana-peels-musa-paradisiaca-l-into-calcium-alginate-beads-for-removal-of-chromium-vi-from-aqueous-solution/amit-s-sharma

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Introduction

Introduction

Introduction. The growth of algae in alginate gel beads is currently being studied at OSU and in various institutions throughout the world. The purpose of this study is to determine which type of modified alginate bead is most suitable for entrapment of growing algae cells.

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180 views • 16 slides

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