“…The extracts of Acacia nilotica leaf (Majumdar and Bag 2013), Lantana camara leaf (Dash et al 2014a), Abroma augusta Linn bark (Das et al 2014), Breynia rhamnoides (Gangula et al 2011), Saraca indica (Dash et al 2014b), Piper betle (Punuri et al 2012), green coconut shell (Paul et al 2014), etc., have been utilized for the synthesis of AuNPs. During our investigations on the utilization of triterpenoids (C30s) as renewable functional nano-entities Bag and Dash 2011;Bag and Paul 2012;Bag and Majumdar 2014), it occurred to us that the medicinally important bark extract of Mimusops elengi, rich in polyphenolic compounds, can be utilized for the synthesis AuNPs from HAuCl 4 (Baliga et al 2011;Kadam et al 2012).…”