CHAPTER ONE
1.0 INTRODUCTION
The use of medicinal plant in Nigeria and other countries
of black Africa dates back to many centuries ago (Anon, 2009).
Garlic is rich in antioxidants which help destroy free
radical particles that can damage cell membrane, interact with genetic
materials, and possibly contribute to the aging process as well as the heart
disease and cancer (Olaigbo, et al,
2009). Free radicals occur naturally in the body, but environmental toxins
include ultraviolet light, radiation, cigarette smoke and air pollution
(Sofowora, 1993).
The medicinal value of plant has assumed a more important
dimension in the past few decades. This is due largely to discovery that
extracts from plants contain antioxidant potentials (Sofowora, 1993). Medicinal
plants form the basis of primary health care for majority of the people living
in the rural and remote area in Nigeria and other third world countries
(Awosika, 1993). A number of medicinal plants have been found and put into use
in ethnomedicine by traditional head as in the management of many diseases
(Sofowora, et al, 2009).
This work aims at screening
the aqueous extract of garlic for some important phytochemicals.
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