Microbial Examination of Spoilt Persea Americana

Microbial Examination of Spoilt Persea Americana

Project / Seminar Material
Reference ID: PS-6684-TM

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This research material titled “Microbial Examination of Spoilt Persea Americana” is dedicated to God for his enabling grace, and to all computer enthusiasts who contributed to make life a pleasant experience during my research documentation.

ACKNOWLEDGEMENT

I extend my sincere gratitude to all those who contributed to the completion of this project. Special thanks to my Supervisor (Name of your Supervisor), the Head of Department (Name of your HOD), the Lecturers in the department of Microbiology, Book Authors and Profound Scholars of existing or related project material on “Microbial Examination of Spoilt Persea Americana” for their invaluable guidance, support, and expertise throughout the journey.

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TABLE OF CONTENTS

PRELIMINARY PAGES

CHAPTER ONE

INTRODUCTION

    CHAPTER TWO

    LITERATURE REVIEW

    • 2.1 Introduction
    • ⋮

    CHAPTER THREE

    MATERIALS AND METHODS

    • 3.1 Introduction
    • ⋮

    CHAPTER FOUR

    RESULTS AND DISCUSSION

    • 4.1 Introduction
    • 4.2 Results
    • ⋮
    • 4.3 Discussion of Findings

    CHAPTER FIVE

    SUMMARY, CONCLUSION AND RECOMMENDATION

    • 5.1 Introduction
    • 5.2 Summary
    • 5.3 Conclusion
    • 5.4 Recommendation

    REFERENCES

    Microbial Examination of Spoilt Persea Americana

    CHAPTER ONE

    1.1 Introduction

    The Avocado fruit, Persea americana is a tropical and sub-tropical fruit tree, originated in central America or adjoining regions of North or South America. It has now spread too much of the near tropical world. The avocado is limited especially by its climatic requirements, with race differences. It is also highly susceptible to drought injury. But excess soil moisture is equally fatal, encouraging the dread phytophthora root in most of the world, and where the fungus is unknown. Despite the high water activity of most fruits, the low PH leads to their spoilage being dominated by fungi, both yeast and molds. Other common diseases of pears include the black spot or scab caused by as comycetes. (Bezundenhouit J.J. 1992)

    Avocado fruits has being estimated that one fourth of all produce harvested is not consumed before spoilage (Salulche, 1974), spoilage of fresh fruits usually occurs during storage and transport and while waiting to be processed unlike many other foods fruits after picking and before processing, microbiological spoilage problems are really market diseases of these products

    Shape, varies from slightly obligate to highly elongate, an intermediate oval or pear shape is preferred, yellow to purple or black. (Sheperd J.S: 1990)

    The composition of the fruit influences as the likely type of spoilage. Thus bacteria soft rot is widespread for the most part among the fruits is limited to those that are not highly acid. Because most fruits are some how acid and are fairy dry at the surface, and are deficient in B vitamins, moulds are the most common causes of spoilage. The compositions too, must determine the particular kind of moulds most likely to grow, thus avocado support a large, variety of fungal spoilage organisms and other kinds comparatively few. (Prusky and N.T. Keen 1993).

    1.2 Statement Of Problem

    Micro-organisms are known to destroy fruits, thereby reducing the quantity for consumption and the profits desirable from fruits such as avocado. Many spot are noticed on pears which do change the taste when consumed.
    Bacteria and fungi are harmful and useful living organisms. The spoilage of most fruits is always associated with bacteria and fungi, many diseases of plants are associated with bacteria and fungi (Micro-organisms).

    The adverse effect of bacteria in plants and fruits has resulted in shortage of avocado fruits for consumption. Revenue is lost by farmers and industries that uses avocado fruits as raw materials for fruit juice due to the spoilage caused by micro-organisms. (Macmillam and Narayanam, 1990)

    1.3 Aim And Objective Of The Study

    Microbial examination of spoilt avocado fruits.

    1. To isolate and identify how micro-organism destroy avocado so as to guide producer and farmers on how to manage the fruits.
    2. To isolate and identify those micro-organisms that are responsible for the spoilage.
    3. To compare the extent of spoilage in the area of collection (tree) with that of market.

    1.4 Significance Of The Study

    This study will be useful to farmers, fruit juice industries and consumers of avocado fruits. The outcome of this research will guide users of avocado fruit on the best method of preserving to avoid spoilage. The research work also will add to the literature and information existing about avocado for student and companies that uses avocado as raw materials for the production of fruit juice. (Debek A.J 1993).

    …

    CHAPTER TWO

    2.0 Literature Review

    2.1 Introduction

    This chapter focuses on the review of related literature. A literature review includes the current knowledge as well as theoretical and methodological contributions to a particular topic. It documents the state of the art with respect to the topic you are writing. It surveys the literature in the topic selected. In this research work the literature review includes the …

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