Lepista irina

Zorn H, Langhoff S, Scheibner M, Nimtz M and Berger RG. 2003. A peroxidase from Lepista irina cleaves P, 3-carotene to flavor compounds. Biol Chem 384(7) 1049-1056. 

In 2003, Zorn et al. [80] discovered a fungal peroxidase from Lepista irina—a valued edible fungus—that cleaved -carotene to flavour-active compounds. According to the authors, the cleavage of -carotene to aroma compounds by a fungal peroxidase had not been reported before. 

Scheme 22.4 Cleavage of /i-carotene by Lepista irina peroxidase [80]...

Scheme 23.16 Microbial pathways from triterpene and tetraterpene (carotenoid) precursors to valuable flavour and fragrance compounds. 1 Carotenoid-cleaving peroxidase-containing supernatant of certain fungal cultures, e.g. Lepista irina 2 Serratia liquefaciens, Botrytis sp.

C,sH2202, Mr 234.34, oil, [aJo -h129.5 (CH3OH). A sesquiterpenoid from cultures of the agaric Lepista irina (Basidiomycetes). 

---