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MICROBIAL ACTIVITES ON EGUSI
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Table of contents
CHAPTER ONE: INTRODUCTION 1
1.1 Background to the Study 1
1.2 Justification of the Study 2
1.2 Aim of the Study 3
1.3 Objectives of the Study 3
CHAPTER TWO: LITERATURE REVIEW 4
2.1 MELON: Colocynthis citrullus 4
2.2 Proximate and Nutritional Composition of Egusi 6
Table I: Amino acid analysis of Melon seed 11
2.3 Importance and Uses of Egusi 12
2.4 Pharmaceutical and Medicinal Uses of Egusi 13
2.5 Microbial Spoilage of Egusi 16
CHAPTER THREE: MATERIALS AND METHODS 18
3.1 Study Area 18
3.2 Sample Collection 18
3.3 Materials Used 18
3.3.1 Media 18
3.3.2 Chemicals 18
3.3.3 Equipment 18
3.4 Isolation of Microorganisms 18
3.4.1 Isolation of Pure Culture 19
3.5 Characterization of Microorganisms 19
3.5.1 Gram Staining 19
3.5.2 Biochemical tests 20
3.6 Antibiotic Susceptibility Testing 21
3.6.1 Preparation of Inoculum 21
CHAPTER FOUR: RESULTS 23
Table 4.1: Total Microbial Count (cfu/ml) of Egusi Samples 23
Table 4.2: Morphological Characteristics of Bacteria Isolated from Egusi Samples 24
Table 4.3: Biochemical Characteristics of Bacteria Isolated from Egusi Samples 25
Table 4.4: Antibiotic Sensitivity Pattern of Gram Negative Bacterial Isolated from Egusi
Samples 26
Table 4.5: Antibiotic Sensitivity Pattern of Gram Positive Bacterial Isolated from Egusi
Samples 27
CHAPTER FIVE: DISCUSSION, CONCLUSION AND RECOMMENDATIONS 28
5.1 Discussion 28
5.2 Conclusion and Recommendations 28
References 30
Abstract
The delicacy of egusi is commercially available on the streets, markets and motor parks of Nigeria but native to most of the Nigerian town and villages. Due to it is importance in medicine and food consumption. There is need for a study on it microbial activities. This aim of this study was to analyse the microbial activities of egusi and determine their susceptibility to common antibiotics. The microbial count ranged from 1.0 x 102 to 10.0 x 106 cfu/ml. The isolated bacteria were Klebsiella pneumonae, Escherichia coli, Staphylococcus epidermis, Staphylococcus aureus and Pseudomonas aeruginosa. The presence of these bacteria can affect food quality and human health, especially when involved in food spoilage. All the bacteria isolates were sensitive to gentamycin, SP, ciprofloxacin and Amoxicillin. Staphylococcus epidermis was sensitive to all the antibiotics while Staphylococcus aureus was sensitive to only ciprofloxacin and gentamycin. It is therefore necessary to preserve “Egusi” thorough heating or sun drying.
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