The Preparation Of Magensium Glucourantes From Acacia Seyal Var. Seyal Gum

Abstract In this investigation,physicochemical properties of Acacia seyal(Talha) sample was studied [moisture content (10.79%), ash (1.1294%), nitrogen (0.15%), specific optical rotation (+46.1°), pH (4.5)]. Mineral contents of Ca and Mg in two samples (S1gum, S2 magnesium glucurnates and S2) has been analysizedby using Atomic Absorption Spectroscopy (AAS), the results were (Ca in sample S1 = 1934.4, Ca in sample S2 = 65.22, Mg in sample S1 = 19.86 and Mg in sample S2 = 1264.8).

List of Contents

Dedication I

Acknowledgement II

Abstract(English) III

Abstract (Arabic) IV

List of Contents V

List of Tables VIII

List of Figures IX

Chapter One: Introduction

1.1Gum 1

1.1.1Definition and nomenclature 7

1.1.2Formation and function 7

1.1.3 Gum production 9

1.1.4 Gumgrading 9

1.1.5 Properties of gum arabic 11

1.1.5.1 Physical and chemical properties 11

1.1.5.2 Molecular structure and properties 14

VI

1.1.6 Uses 15

1.1.6.1 Food and allied applications 15

1.1.6.2. Industrial applications 16

1.1.6.2.1 Pharmaceutical and cosmetic industry 16

1.2Acacia seyal 17

1.2.1 Management of Acacia seyalnatural stands in Sudan 20

1.2.2 Volume and height functions for Acacia seyal 21

1.3 Objective 21

Chapter Two: Materials and Methods

2.1 Collection of samples 22

2.2 Samples preparation and treatment 22

2.3 Chemicals and materials 22

2.4 Apparatus and Instruments 22

2.5 Method of analysis 23

2.5.1 Moisture content 23

2.5.2 Ash content 24

2.5.3 pH 24

2.5.4 Specific rotation 25

VII

2.5.5 Total Nitrogen 26

2.5.6 Uronic acid anhydro and hence glucuronic acid 27

2.5.7 Preparation of magnesium glucournates 28

2.5.8 Mineral contents 28

Chapter Three: Results and Discussions

3.1 Moisture content 29

3.2 Ash content 30

3.3 Nitrogen content 30

3.4pH 30

3.5 30

30

3.7 Conclusion 31

References 32