Phytochemical analysis of dried leaves of Paederia foetida
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Date
2023
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Abstract
With advancing gain of interest in medicinal herb due to its health benefits, drying
of leaves play an important role in packaging and preservation. Being highly perishable,
drying of P. foetida leaves can be utilised for its widespread use. The present study was
carried out to identify the impact of drying methods on phytochemical content and
antioxidant activity of P. foetida leaves. Different drying techniques utilised in the study
were oven drying at 40ºC, 50ºC, sun drying, solar drying and shade drying. Preliminary
phytochemical screening of ethanolic extract revealed presence of phenol, flavonoid, tannin,
glycoside and terpenoid. Impact of drying methods on phytochemical content was found
significant. Moisture content of dried sample ranged from 11.18%in oven dried sample @50
ºC to 12.76% in shade dried sample. Total phenolic, flavonoid and tannin contents varied
from 10.97- 16.46 mg GAE/g, 2.22- 8.39 mg QE/g, 4.25- 4.90 mg TAE/g respectively with
highest amount in solar dried sample. Ascorbic acid content was retained most in oven dried
sample @50 ºC with 8.4 mg/100 g and lowest in shade dried sample with of 7.2 mg/100 g.
Total antioxidant activity ranged from 10.30-15.69 mg AAE/g with maximum activity in
solar dried sample. Scavenging activity using DPPH free radical portrayed a gradual increase
in activity with increased concentration of sample extract. Highest inhibition was recorded
for solar dried sample. Solar dried sample was found best amongst the drying treatments on
retention of bioactive compounds and antioxidant activity.