Carica papaya leaf extracts from four different extraction
methods (cold-water, hot-water, sonication and supercritical fluid),
were characterized using physico-chemical analysis. Sonication extraction
showed the highest percentage yield of crude extracts (6.76%) and the lowest
from the supercritical fluid extraction (1.83%). The Infrared (IR) spectrum of
cold-water extract demonstrated the most similarity of functional group to quercetin. Likewise, the
thermal analysis indicated that cold-water extract gave a quite similar
Endothermic peak to quercetin
with the obtained value which was 137°C and onset
value which was 118°C. The
liquid chromatography (LC) profile indicated that only the cold-water extract
exhibited 0.203 ppm of quercetin.
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