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Physicochemical characterization of chitosan/agar blend gel beads prepared via the interphase method with different drying techniques.


Citation

Nazarudin, Muhammad Farhan and Shamsuri, A. A. and Nor Shamsudin, Mariana (2011) Physicochemical characterization of chitosan/agar blend gel beads prepared via the interphase method with different drying techniques. International Journal of Pure and Applied Sciences and Technology, 3 (1). pp. 35-43. ISSN 2229-6107

Abstract

In this study, natural and biodegradable chitosan/agar blend gel-beads were prepared via the interphase method. Agar was added to chitosan dissolved in aqueous acetic acid and stirred homogenously under a controlled temperature. With a syringe, the gel solution were added and dropped wisely to the oily phase. The gel-beads were dried at two different conditions: in the oven at 60°C, and in the freeze dryer for 12 hours. The physicochemistry of the resulting materials were subsequently characterized by fourier transforms infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). FTIR results confirmed the formation of intermolecular hydrogen bonding between the amino and hydroxyl groups of chitosan and the hydroxyl groups of the agar. From the TGA results, we noticed that heat stability of the chitosan/agar blend beads was high compared to its individual components. SEM micrographs showed regular shaped chitosan beads with spherical forms and rough surfaces with pores.


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Additional Metadata

Item Type: Article
Divisions: Institute of Bioscience
Publisher: International Journal of Pure and Applied Sciences and Technology
Keywords: Chitosan/agar blend; Gel-bead; Interphase method; Physicochemistry.
Depositing User: Nur Farahin Ramli
Date Deposited: 02 Oct 2013 08:43
Last Modified: 16 Dec 2015 04:39
URI: http://psasir.upm.edu.my/id/eprint/24255
Statistic Details: View Download Statistic

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