History of saffron stores from wild flowers, believing that divine intervention alone enables saffron's medicinal properties. Such evidence suggests that saffron was an article of long-distance trade before Crete's Minoan palace culture reached a peak in the 2nd millennium BC. Saffron was also honoured as a sweet-smelling spice over three millennia ago in the Hebrew Tanakh: In ancient Persia, saffron ("Crocus sativus" 'Hausknechtii') was cultivated at Derbena and Isfahan in the 10th century BC. There, Persian saffron threads have been found interwoven into ancient Persian royal carpets and funeral shrouds. Saffron was used by ancient Persian worshippers as a ritual offering to their
Saffron action, splits picrocrocin to yield D–glucose and a free safranal molecule. Safranal, a volatile oil, gives saffron much of its distinctive aroma. Safranal is less bitter than picrocrocin and may comprise up to 70% of dry saffron's volatile fraction in some samples. A second molecule underlying saffron's aroma is 2-hydroxy-4,4,6-trimethyl-2,5-cyclohexadien-1-one, which produces a scent described as saffron, dried hay-like. Chemists find this is the most powerful contributor to saffron's fragrance, despite its presence in a lesser quantity than safranal. Dry saffron is highly sensitive to fluctuating pH levels, and rapidly breaks down chemically in the presence of light and oxidising