The AuNPs were rapidly synthesized using a bio-reducing agent from saffron stigma (crocin).
The AuNPs in the range of 4–10 nm were functionalized and conjugated with crocin.
The crocin–AuNPs could be stable at room temperature (25 °C) for at least 30 days.
The AuNPs with crocin were showed significant cytotoxic effects against breast cancer cells.