History of saffron foods, saffron stigmas were also soaked in water to yield a golden-yellow solution that was used as a fabric dye. Some historians believe that saffron first came to China with Mongol invaders by way of Persia. Saffron is mentioned in the ancient Chinese medical text "Shennong Ben Cao Jing", believed to be from the 3rd century AD (but attributed to mythological emperor Shennong). Yet the Chinese were referring to saffron as having a Kashmiri provenance. The Chinese medical expert Wan Zhen wrote that "[t]he habitat of saffron is in Kashmir, where people grow it principally to offer it to the
Saffron (preferably) sealed in airtight containers. One freshly picked flower yields an average of fresh saffron or dried; roughly 150 flowers yield of dry saffron threads; to produce of dried saffron, of flowers are needed; yields of dried saffron. To glean of dry saffron requires the harvest of 50,000–75,000 flowers; a kilogram requires 110,000–170,000 flowers. Forty hours of labour are needed to pick 150,000 flowers. Saffron contains more than 150 volatile and aroma-yielding compounds. It also has many nonvolatile active components, many of which are carotenoids, including zeaxanthin, lycopene, and various α- and β-carotenes. However, saffron's golden yellow-orange colour is primarily