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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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