ABSTRACT

This project was done to extract and characterize bean oil according to their particle sizes. The experiment was carried out using scent bean (i.e. ‘Ozaki’, ‘Ijilizi’or ‘Azamu’) as sample. The oils were extracted by solvent extraction /leaching extraction using n-hexane. Proximate analysis was carried out to obtain percentage moisture content, ash content, total oil content, protein content and carbohydrate content of the extracted oils. From observation, it was noticed that as the diameter of the sieve decreased, the quantity of oil obtained increased

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TABLE OF CONTENTS

Title page…………………………………………………….... i

Certification……………………………………………………ii

Dedication……………………………………………………... iii

Acknowledgement…………………………………………….. iv

Abstract………………………………………………………… v

Table of contents………………………………………………. vi

CHAPTER ONE

Introduction……………………………………………………..1

Background of study…………………………………………….1

Problem of statement…………………………………………….4

Objectives of study………………………………………………5

Significance of study…………………………………………….5

Justification of study…………………………………………….6

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CHAPTER TWO

Literature review………………………………………………7

Preamble……………………………………………………….7

Importance of oils……………………………………………...8

Proximate composition of oil…………………….…………….10

Moisture content …………………………….…………………11

Ash content………………………...……………………………11

Crude protein……………………………………………………12

Crude fat…………………………………………………………12

Crude fibre………………………………………………………13

Carbohydrate…………………………………………………….13

Concept of vegetable oil extraction…...…………………………14

The role of moisture and temperature in oil extraction………….14

Traditional extraction of vegetable oil………………….………..16

Solvent extraction of vegetable oil/leaching method…………….17

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Solvent characteristics……………………………………………18

Mechanical expression of vegetable oil…………..………………22

Quality oil assessment……………………………………………23

Objective method of assessing oil quality………………………..24

Properties of oil…………………………………………………..25

CHAPTER THREE

Materials and method……………………………………………..28

Raw materials and equipment used……………………………….28

Equipments………………………………………………………...29

Reagent ……………………………………………………………29

Oil extraction and separation experiments…………………………29

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CHAPTER FOUR

Result and discussion………………………………………………31

Experimental results……………………………………………….31

CHAPTER FIVE

Conclusion and recommendation……………………………………37

Appendixes…………………………………………………………..39