| dc.description.abstract | Syzygium caryophyllatum L. (Family: Myrtacea)
Heendan in Sinhala is a red listed plant which is
yet to be exploited as a source of functional food.
Therefore, in the present study, antioxidant, antiglycation
and anti-amylase activities of leaves
and fruits, and mineral elements and volatile
oil composition of leaves were quantified. The
aqueous extract of leaves and ethanol (95%) extract
of fruits were further fractionated by solventsolvent
partitioning with hexane (Hex) and ethyl
acetate (EA). Significantly high total phenolic
content (TPC) and total flavonoid content (TFC)
values were reported in crude extract (CR) of fruits
with values 8.83±0.62 mg gallic acid equivalent
(GAE)/g of sample and 2.02±0.19 mg quercetin
equivalent (QE)/g of sample respectively. The
EA fraction of leaves showed the highest values
for DPPH radical scavenging activity, ferric
reducing antioxidant power and oxygen radical
absorbance capacity. Significantly high ABTS
radical scavenging activity, iron chelating activity
and anti-amylase activity (IC50; 47.20 ± 0.3 μg/
ml) were observed in Hex fraction of fruit. The
anti-glycation activity of CR extract of leaves
exhibited highest inhibition with 93.61±8.53%
for maximum concentration (200 μg/ml). Leaf
oil analysed by GC-MS showed 64 compounds
representing 92.5% of oil where phytol, α-cadinol
and caryophyllene were identified as prominent
compounds. Inductively coupled plasma-mass
spectrometry data revealed the presence of
biologically significant trace elements such as
Fe, Zn, Mg, Cu, Se and Sr in leaves and fruits.
Thus, the result shows that the S. caryophyllatum
exhibited the potential to be used as a natural
source for nutraceuticals and food supplements. | en_US |
