Mogotlane I M.Sc front.pdf
Mogotlane I M.Sc front.pdf
Mogotlane I M.Sc front.pdf
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- mogotlane
- ul.netd.ac.za
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TABLE OF CONTENTS<br />
DECLARATION iv<br />
ACKNOWLEDGEMENTS v<br />
LIST OF TABLES vi<br />
LIST OF FIGURES vii<br />
LIST OF APPENDICES viii<br />
ABSTRACT ix<br />
CHAPTER 1: INTRODUCTION<br />
CHAPTER 2: LITERATURE REVIEW<br />
iii<br />
Page<br />
2.1 Introduction 4<br />
2.2 Herbal teas 5<br />
2.3 Medicinal significance of herbal teas 7<br />
2.4 Antioxidants 8<br />
2.5 Natural vs. synthetic antioxidants 9<br />
2.5.1 Dangers of synthetic antioxidants 11<br />
2.5.2 Natural vs. synthetic vitamin E 11<br />
2.6 Solubility of Antioxidants 13<br />
2.7 Antioxidant activities of polyphenols 14<br />
2.8 Factors affecting antioxidant activities 17<br />
2.8.1 Structures of antioxidants 17<br />
2.8.2 Processing 19<br />
2.8.3 Synergy 20<br />
2.9 Measurements of total antioxidant activities 21<br />
2.9.1 DPPH antiradical method 21<br />
2.9.2 ABTS antiradical method 24<br />
2.10 Antioxidant efficiency 25<br />
2.11 Summary and conclusions 26<br />
1
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