“…A recent paper used aqueous, ethanolic and hexanoic extracts of Agave potatorum to synthesize AuNSs, where spherical AuNSs were obtained for the aqueous and hexanoic extracts while the ethanolic extracts gave anisotropic AuNSs (e. g. trigonal, nanorod etc.). [42] Flavonoid/reducing sugar ratio and flavonoid/total phenolic ratio were < 1 and < 0.1 only for the ethanol extracts, respectively. Comparing the aqueous extract and the hexanoic extract, there were some AuNSs deviated from spherical morphology, which could have relation with the flavonoid/total phenolic ratio, which were 0.68 and 0.91 for the extracts, respectively.…”