ABSTRACT
Using Mortierella isabellina as starting strain, mutagenized with UV,screened by selecting mutants resisting maleic hydrazide,a fatty acid dehydrogenase inhibitor, directly on gradient plate,a mutant M 80 overproducing Gamma Linolenic Acid (GLA) was obtained, which has much higher productive qualities than its parental strain Its dry cell weight reaches 25 10g/L,lipid yield 12 35g/L,and GLA yield 771 88mg/L
ABSTRACT
Leucocoprinus birnbaumill (Corda)Sing.is a new recorded species in Sichuan province,which belongs to Basidiomycota.It is a poisonous and view and admire mushroom.Hyphae of Leucocoprinus birnbaumii (Corda) Sing.have not clamp connection,but can form sclerotium.This is a rare event of Agaricales.The morphological characteristics,physiological characteristics of mycelium and fruit\|body,and the aftificial cultivate technology of this mushroom are report in this paper.It is a typical medium\|hightemperature mushroom.Grass powder,cow dung,wheat bran and cultivated spent compost of edible fungi etc,conventional combination are cultural fruiting substratum;with bottle,bag,beds cultivation are all feasible,the biological efficiency of dry mushroom is about 5%～7 5%.
ABSTRACT
The Panaeolus bisporus(Malen con & Bertault) Ew.Gerhardt is a toadstool species in the world,as poisonous as it contains small quantities of the psilocybin group of hallucinogens,mycelium is white with obvious clamp-connection,which belongs to Basidiomycota,Agaricales,Bolbitiaceae.The suitable and optimal carbon sources,nitrogen sources,carbon nitrogen ratio,pH worth,temperature,material water ratio of the plant material for the physiological characteristics of mycelium growth of this species were studied.The experiment showed that the optimum carbon sources were starch,sucrose and cellulose,the optimum nitrogen sources was yeast paste,potassium nitrate,maize powder and ammonium nitric,the carbon nitrogen ratio was 25:1~35:1 that for the mycelium growth.The suitable temperature for the mycelium of this fungi growth was ranged from 5℃~35℃ with the optimum temperature being 25℃~30℃,the suitable pH was ranged from 4~13 with the optimum pH being 6.5~8.0,and the suitable moisture content of the compost was ranged from 45%~75% with the optimum moisture content of the compost being 65%~70%;and that While the temperature for its fruitbody formation was 18℃~28℃ with the optimum temperature being 20℃~25℃,and the optimum relative air humidity for its fruit-body formation was 70%~85%.The yield of the fruit-body was 0.1%~0.3%.