Fig. 2.

Quantification of bioactive compounds of C. verum involved in capping of Au@P-NPs using NMR analysis. The Au@P-NPs was centrifuged at 10,000 ​rpm for 20 ​min at 4 ​°C. The obtained NPs were washed thrice using Milli-Q water, fractionated using ethyl acetate, and recorded 1D ¹H proton NMR spectra.