Preparation of Chitosan from Jazan Area Shrimp Wastes and Investigation of Its Properties

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  • Topic: Chitosan, Chitin, Arthropod
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  • Published : March 11, 2013
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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties A Project submitted to the Physical Chemistry Branch In partial fulfillment of the requirements of Bachelor of Science (Chemistry) By

Student #: Under the guidance of Dr. R. E. Azooz To Chemistry Department, Faculty of Science, Jazan University 2097-Jazan, Jazan, KSA 2012

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

Contents

Abstract Ker words Introduction Experimental
Result and discussion Conclusion References ‫الملخص العربي‬

3 5 7 11
17 23 25 03

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

ABSTRACT

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

Abstract

Chitosan was prepared from shrimp processing waste (shell) using the same chemical process as described for the other crustacean species with minor modification in the treatment condition. The physicochemical properties,

molecular weight (76 x 103g/mole), degree of deacetylation (61%), ash content as well as yield (15%) of prepared chitosan indicated that shrimp processing waste (shell) are a good source of chitosan. The water binding capacity (500%) and fat binding

capacity (396%) of prepared chitosan are good agreement with the commercial chitosan. FT-IR spectra gave characteristics bands of –NH2 at 3431cm-1 and carbonyl at 1661cm-1. X-ray diffraction (XRD) patterns also indicated two

characteristics crystalline peaks approximately at 10° and 20° (2θ).The surface morphology was examined using scanning electron microscopy (SEM).

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

KEY WORDS

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

Key Words:

Shrimp waste Chitin Deacetylation Chitosan FT-IR XRD SEM

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

INTRODUCTION

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Preparation of Chitosan from Jazan Area Shrimp wastes and Investigation of Its Properties

Introduction
Chitosan and its derivatives are examples of value-added materials. They are produced from chitin, which is a natural carbohydrate polymer found in the skeleton of crustaceans, such as crab, shrimp and lobster, as well as in the exoskeleton of marine zooplankton spp., including coral and jellyfishes [1]. Insects, such as butterflies and ladybugs, also have chitin in their wings and the cell walls of yeast, mushrooms and other fungi also contain this substance [2]. Chitin (Fig.1), a homopolymer of 2β-

acetamido-2- deoxy-D- glucose (N-acetylglucosamine) residues linked by

(1-4) bonds, is a common constituent of insect exoskeletons, shells of crustaceans and fungal cell walls [3].Chitosan (Fig.1) is a polymer obtained from

deacetylation of chitin, is a cationic polysaccharide with linear chain consisting of β-(1,4)-linked 2-acetamino-2- deoxy-β-Dglucopyranose and 2-amino-2-deoxy-βD-glucopyranose [4]. Chitosan are used in dietary supplements, water treatment, food preservation, agriculture, cosmetics, pulp & paper and medicinal application [5]. There has been a large increase in chitosan research during the past decade. This is due to its biocompability, biodegradability, non-toxicity, and other unique properties such as film forming ability, chelation and adsorption properties and antimicrobial activity [6]. The functional properties of chitosan are reported to be dependent on its molecular weight or viscosity [7]. Earlier investigations demonstrated that chitosans with higher molecular weight (or viscosity) were more effective as food preservatives than those with lower molecular weight [8]. Due to its polycationic nature, chitosan...
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