Studies on Producing Iris Spice from Fresh Rhizome of Iris pallida by Fungi Fermentation

25 strains of fungus were isolated from the slice of dry aged iris rhizomes.The fungi were cultured by solid-state fermentation,and the fermentive extraction was analyzed by GC/MS.The results showed that one of the strains,YW-29,has the ability of producing iris spice via fermenting the fresh rhizomes of Iris pallida.The irone content in the absolute oil is 3.87%,which is the main aromatic component.The fungus YW-29 is identified as Rhizopus oryzae.This finding proves that it is possible to produce iris spice from the fresh rhizomes of Iris pallida via fungus fermentation.