title: [Analysis of the main amatoxins and phallotoxins in Amanita exitialis--a new species in China].
abstract: The content and distribution of the main Amatoxins (alpha-amanitin, beta-amanitin) and Phallotoxins (Phallacidin, Phallisin, Phalloin, Phalloidin) in the three tissues (cap, stipe and volva) of Amanita exitialis were evaluated by means of high-performance liquid chromatography. The results showed that Amanita exitialis was a lethal mushrooms, the cap had the highest content of total toxins, it reached 8152.6 microg/g dry weight, the toxins content in stipe reached 3742.3 microg/g dry weight, whereas the volva had the lowest content of total toxins,it had only 1142.5 microg/g dry weight. The distribution of Amatoxins and Phallotoxins in the tissues were revealed and it displayed that the content of Amatoxins (alpha-amanitin and beta-amanitins especially alpha-amanitin) in the cap, stipe or volva of A. exitialis was higher than that of Phallotoxins (Phallacidin, Phallisin, Phalloidin and Phalloin). But the content of Phallotoxins especially Phallacidin was gradationally higher from cap to stipe and to volva.
authors.affiliation: Mycological Laboratory, Life Science College, Hunan Normal University, Changsha 410081, China.
authors.forename: Jingsong
authors.initials: J
authors.lastname: Hu
authors.forename: Zuohong
authors.initials: Z
authors.lastname: Chen
authors.forename: Zhiguang
authors.initials: Z
authors.lastname: Zhang
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
mesh_terms: D000545:Amanita / Q000737:chemistry* / Q000302:isolation & purification; D000546:Amanitins / Q000032:analysis*; D002681:China; D002851:Chromatography, High Pressure Liquid; D056229:Fungal Structures / Q000737:chemistry
chemical_list: D000546:Amanitins; C018358:phallotoxin; C018207:amatoxin