THE PHYTOCHEMICAL COMPOSITION OF MISTLETOE LEAVES ESTABLISHED ON ORANGE CITRUS, AND PEAR PERSEA AMERICANA

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CHAPTER ONE

INTRODUCTION

1.1     Background of the Study

          African mistletoe (Loranthus micranthus) is a hemi-parasitic plant which belongs to the family Loranthaceae, commonly called mistletoe (Anslem, 2004). According to Judd et al., (2002), there are about 1400 species of Mistletoe around the world. Mistletoe belongs to Kingdom Plantae, subkingdom Tracheobionta, superdivision Spermatophyte, division Magnoliophyta, class Magnoliopsida, subclass Rosidae, order Santales. There are six major genera found in Nigeria which are: Tapinanthus, Agelanthus, Loranthus, Globimetula, Phragmanthera and Englerina. (Omolaja and Gamaye, 1998). In Nigeria, mistletoe is called ‗afomo‘in Yoruba, ‗apari‘ in Igbo,it is ‗kauci‘ in Hausa and ‗ndoro eyong in Efik.  (Oluwole et al., 2013).

          The parasitic plant has its root sunk into the branches and trunks of other trees such as Cocoa, Pear, Citrus, Kola, etc instead of the soil; the seeds need sunlight to germinate unlike most other plants (Anselm, 2008). According to Job, (1969), the leaves produce chlorophyll even in the darkness unlike other plants that turn yellowish when there is no light hence, the name evergreen.

          The plant has been used for various medicinal purposes from ancient times, several studies show that  it possess a number of therapeutic applications in folk medicine in curing or managing of a wide range of diseases such as diabetes mellitus, chronic cramps, stroke, stomach problems, cancer, heart palpitation, to lower blood pressure, difficulties in breathing and hot flushing in menopause, arthritis, infertility and pneumonia (Inuwa et al. (2012, Osadebe and Ukwueze, 2004; Adodo, 2006). The Presence of various phyto- chemicals such as glycosides, alkaloids, viscotoxins, phenylpropannoids, tannins, lignnins and sugars has been reported in the mistletoe collected from different host plants (Jurin, 1993). Generally, phytochemicals are naturally occurring compounds which have both stimulatory and inhibitory properties; they are bioactive and non – nutrient plant compounds with physiological action on human body (Okwu, 2001). Also, A few rural subsistent farmers use the leaves to feed their goats that have newly given birth to kids.

THE PHYTOCHEMICAL COMPOSITION OF MISTLETOE LEAVES ESTABLISHED ON ORANGE CITRUS, AND PEAR PERSEA AMERICANA