Vesicular and Fibrillar Gels by Self‐Assembly of Nanosized Oleanolic Acid

Green coconut (Cocos nucifera Linn) shell extract mediated size controlled green synthesis of polyshaped gold nanoparticles and its application in catalysis

“…Mass spectral analysis of the shell extract indicated the presence of polyphenolic compounds including flavonoids (supporting information Figure S1). During our investigations on the utilization of different types of phytochemicals as renewables Bag and Paul 2012;Bag and Dash 2011), we felt that o-dihydroxy compounds present in the green coconut shell extract can serve as a five membered chelating ligand and also be easily oxidized to corresponding benzoquinones by air or metal ions. Chloroaurate ions having a high reduction potential can be reduced to Au(0) by phenolic hydroxyl compounds.…”

Mimusops elengi bark extract mediated green synthesis of gold nanoparticles and study of its catalytic activity

“…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).…”

Abroma augusta Linn bark extract-mediated green synthesis of gold nanoparticles and its application in catalytic reduction

“…(Gupta et al 2011). During our investigations on the utilization of triterpenoids (C30s) as renewable functional nano-entities (Bag and Dash 2011;Bag and Paul 2012;Bag et al , 2013Majumdar 2012, 2014), it occurred to us that the medicinally important bark extract of Abroma augusta L., rich in polyphenolic compounds, can be utilized for the synthesis of AuNPs from HAuCl 4 (Mittal et al 2013). Herein, we report the experimental evidence for the presence of antioxidants including polyphenols in the bark extract of Abroma augusta L. and the use of the bark extract for a very mild, environment friendly and efficient synthesis of AuNPs without any additional capping or stabilizing agents.…”