10 g of the dried roasted seeds was finely crushed and stirred with
1:1 ratio of 50 mL de-ionized water and 50 mL ethanol at 60 °C for 1 h
and filtered by a Whatman No. 1 filter paper to get the extract. The
filtrate was further used as a reducing agent and also as a stabilizer.
The flowchart depicts the stepwise scheme (Fig. 1a) adopted during
the synthesis of the extract.