In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and ac...In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and active components of C.militaris,aiming to provide reference for the production and utilization of C.militaris QC04.The results showed that the dry weight of the fruiting body of C.militaris was the highest in the wheat medium,moderate in the oat medium,and the lowest in the rice medium.The content of cordycepin and adenosine in the fruiting body and residual medium was higher in the oat and rice media than in the rice medium.The content of cordycepin and adenosine in fruiting body and residual medium peaked on day 55.Furthermore,the content of cordycepin in the fruiting body was lower than that in the residual medium,while the content of adenosine showed an opposite trend.The content of cordycepic acid in the rice medium was generally higher than that in the oat and wheat media.As the cultivation period extended,the fruiting body biomass declined and the content of cordycepic acid in the fruiting body increased slightly.展开更多
The pollution and safety of Pb,Cd,Cr,Hg,and As in soils of six habitats of Morchella in Guizhou Province were evaluated based on single factor pollution index(PI),Nemerow’s pollution index(NPI),and assessment of heal...The pollution and safety of Pb,Cd,Cr,Hg,and As in soils of six habitats of Morchella in Guizhou Province were evaluated based on single factor pollution index(PI),Nemerow’s pollution index(NPI),and assessment of health risk from exposure to the soils.As indicated by PI,the bases,except for base F,all suffered from the pollution by the five heavy metals,particularly Cd.NPI suggested warningline pollution in bases C and D,slight pollution in bases A and E,and no pollution in bases B and F.As for the health risk from exposure to the soil,the ADD was in the order of ADD_(ingestion)>ADD_(dermal contact)>ADD_(inhalation) and HQ followed the order of HQ_(ingestion)>HQ_(dermal contact)>HQ_(inhalation).However,the HQ values were<1,indicating no cancer risk in the study areas.展开更多
基金Supported by Guizhou Province Science and Technology Major Project(Qiankehe Major Special Project[2019]3007-6)Guizhou Province Science and Technology Support Plan Project(Qiankehe Support[2019]2773)Guizhou Province Reform and Transformation Plan Project(Qiankehe Z Word[2013]4006)。
文摘In this study,Cordyceps militaris strain QC04 was cultivated in oat,rice,and wheat media for different time periods.We studied the effects of different cultivation media and periods on the fruiting body biomass and active components of C.militaris,aiming to provide reference for the production and utilization of C.militaris QC04.The results showed that the dry weight of the fruiting body of C.militaris was the highest in the wheat medium,moderate in the oat medium,and the lowest in the rice medium.The content of cordycepin and adenosine in the fruiting body and residual medium was higher in the oat and rice media than in the rice medium.The content of cordycepin and adenosine in fruiting body and residual medium peaked on day 55.Furthermore,the content of cordycepin in the fruiting body was lower than that in the residual medium,while the content of adenosine showed an opposite trend.The content of cordycepic acid in the rice medium was generally higher than that in the oat and wheat media.As the cultivation period extended,the fruiting body biomass declined and the content of cordycepic acid in the fruiting body increased slightly.
文摘The pollution and safety of Pb,Cd,Cr,Hg,and As in soils of six habitats of Morchella in Guizhou Province were evaluated based on single factor pollution index(PI),Nemerow’s pollution index(NPI),and assessment of health risk from exposure to the soils.As indicated by PI,the bases,except for base F,all suffered from the pollution by the five heavy metals,particularly Cd.NPI suggested warningline pollution in bases C and D,slight pollution in bases A and E,and no pollution in bases B and F.As for the health risk from exposure to the soil,the ADD was in the order of ADD_(ingestion)>ADD_(dermal contact)>ADD_(inhalation) and HQ followed the order of HQ_(ingestion)>HQ_(dermal contact)>HQ_(inhalation).However,the HQ values were<1,indicating no cancer risk in the study areas.
