内蒙古赤峰市口蘑类真菌物种资源及经济评价

调查内蒙古赤峰市红山区、松山区、喀喇沁旗等8个旗县区内自然保护区、山地、林区的口蘑类真菌,采集到口蘑类真菌标本400多份,共鉴定出口蘑类真菌49种,其中口蘑属Tricholoma 15种,占总数的30.6%;杯伞属Clitocybe 15种,占总数的30.6%;铦囊蘑属Melanoleuca 10种,占总数的20.4%;香蘑属Lepista 6种,占总数的12.2%;桩菇属Leucopaxillus 2种,占总数的4.1%;毛边菇属Ripartites 1种,占总数的2.0%。49种真菌中,食用真菌33种,占总数的67.3%;药用真菌10种,20.4%,其中8种药用菌含抗肿瘤成分,占总数的16.3%,8种为食药兼用,占总数的16.3%;毒菌5种,占总数的10.2%;1种食毒不明。8种为内蒙古新记录种。

Steroids from the Fungus Pleurotus ostreatus

Twelve steroids, including eight ergostane-type sterols and four mono-glucosides of ergostane-type sterols, were isolated from the ethyl acetate soluble fraction of the fungus Pleurotus ostreatus ( Jacq. : Fr.) Kummer. A new compound 3-O-beta-D-glucopyranosyl-22E, 24R-ergosta-7, 22-diene-5alpha, 6beta, 9alpha-triol, was structurally elucidated by spectroscopic and chemical methods. The eleven known compounds were 22E, 24R-ergosta-7, 22-diene-3beta, 5alpha, 6beta, 9alpha-tetraol; 3-O-beta-D-glucopyranosyl-22E, 24R-ergosta-7, 22-diene-5alpha, 6beta-diol; 22E, 24R-ergosta-7, 22-diene-3beta, 5alpha, 6beta-triol; 22E, 24R-ergosta-5, 7, 22-trien-3beta-ol 3-O-beta-D-glucopyranoside; ergosterol; 22E, 24R-ergosta-7, 22-dien-3beta-ol 3-O-beta-D-glucopyranoside; 22E, 24R-ergosta-7, 22-diene-3beta-ol; 22E, 24R-ergosta-4, 6, 8, 22-tetraen-3-one; 22E, 24R-ergosta-7, 22-diene-3beta, 5alpha, 6alpha-triol; ergosterol peroxide; 22E, 24R-ergosta-7, 22-diene-3beta, 5alpha-diol-6-one.