47 / 50
Pharmacognosy 2018
American Journal of Ethnomedicine
ISSN: 2348-9502
Page 109
April 16-17, 2018
Amsterdam, Netherlands
6
th
Edition of International Conference on
Pharmacognosy and
Medicinal Plants
Statement of theProblem:
Hypoxishemerocallidea isacommonly
used African herbal medicine that is wild harvested, due to its
strong antioxidant activity. Its anti-oxidant activity is linked to
plant stressors like soil, heavy metals concentrations, organic
matter content and pH. Although, minerals are known to increase
antioxidant capacity, the use of this plant from a wild source may
pose a safety concern to the person consuming the said plant or
its naturally harvested cormmay not be completely safe.
Objective:
The purpose of this study is to determine the
relationship between the concentration of selected soil metal
concentrations, the H. hemerocallidea cormmetal concentrations
and corm antioxidant activity.
Methodology &Theoretical Orientation:
H. hemerocallidea corms
were collected from five different geographical regions of South
Africa. Qualitative and quantitative evaluation of anti-oxidant
activity of the corms was done. Heavy metal, organic matter
content and pH analysis were also evaluated.
Findings:
The soil and corm metal concentrations varied by site.
In general, the highest corm and soil metal concentrations for any
sites were Fe, Mn, and Cr. Among the trace metals investigated,
Fe was the highest, particularly for the corm collected from Ga-
Rankuwa 83.7±0.03 μg g-1. The soil and corm crude samples
from Ga-Rankuwa with high levels of metals (e.g. Fe, Cr, Ni, Pb)
yielded greater antioxidant activity (EC50 of 1.68±0.49 µg/ml).
We were, however, unable to link the corm’s antioxidant activity to
environmental conditions.
Conclusion & Significance:
The results from this study however
highlight the dangers of using naturally harvested bulbs in
undefined soils as the dangers of naturally harvested medicines
and indicate that the plant has the ability to bio accumulate heavy
metals.
morning001.mm@gmail.comSoil parameters from different geographical areas in South
Africa: a hint for a preeminent antioxidant collection sites of
Hypoxis hemerocallidea
Mkolo M Nqobile
1
, Olowoyo O Joshua
2
, Eloff J Nicolaas
1
and
Naidoo V
1
1
University of Pretoria, South Africa
2
Sefako Makgatho Health Sciences University, South Africa
Am J Ethnomed 2018, Volume 5
DOI: 10.21767/2348-9502-C1-006