The diagnostic methods of extracelluar oxidase mat were used to select lignin-degrading enzymes producers among nineteen Ganoderma lucidum fungal strains.The results showed that the producing laccase activity of G.sp....The diagnostic methods of extracelluar oxidase mat were used to select lignin-degrading enzymes producers among nineteen Ganoderma lucidum fungal strains.The results showed that the producing laccase activity of G.sp.var.Tianzhi was the highest,followed by that of G.lucidum 10 and G.lucidum 8.The producing lignin peroxidase activity of G.sp.var Tianzhi was the highes,and the producing Manganese peroxidase activity of G.sp.var yuanzhi 6 and G.lucidum G 8 were the highest,followed by that of the G.sp.var.Tianzhi and G.lucidum 10.It was found that G.sp.var Tianzhi,G.sp.var.Yuanzhi 6G.lucidum 8 and G.lucidum 10 showed the highest lignin-degrading enzymes activity.展开更多
White rot fungus Pleurotus djamor H1 was stilly cultured at 28 ℃ under 4 different kinds of LNAS culture solution,the extracellular enzyme solutions were sampled at different interval,O.D.values of the solutions,repr...White rot fungus Pleurotus djamor H1 was stilly cultured at 28 ℃ under 4 different kinds of LNAS culture solution,the extracellular enzyme solutions were sampled at different interval,O.D.values of the solutions,representing manganese peroxidase(MnP),laccase and lignin peroxidase(LiP)activities,were measured spectrophotometrically by monitoring the oxidation of 2,6-DMP at 470 nm,ABTS at 420 nm and veratryl alcohol(VA)at 310 nm,the lignin-degrading enzymes of the fungus and the relationships between enzyme activities and medium composition and substrates were gained.Results indicated that Pleurotus djamor could produce MnP and laccase simultaneously,but no Lip.Substrates wood sawdust and 2,6-DMP could significantly enhanced MnP and laccase activities,the biggest Mnp and laccase activity were 5 U·L-1.and 38 U·L-1 when no substrates were added,and 69 U·L-1 and 205 U·L-1 when substrates added.The paper offered a basic ligninolytic enzymology of Pleurotus djamor for future utilization of the enzymes and further study on MnP and laccase mechanism of the fungus.展开更多
文摘The diagnostic methods of extracelluar oxidase mat were used to select lignin-degrading enzymes producers among nineteen Ganoderma lucidum fungal strains.The results showed that the producing laccase activity of G.sp.var.Tianzhi was the highest,followed by that of G.lucidum 10 and G.lucidum 8.The producing lignin peroxidase activity of G.sp.var Tianzhi was the highes,and the producing Manganese peroxidase activity of G.sp.var yuanzhi 6 and G.lucidum G 8 were the highest,followed by that of the G.sp.var.Tianzhi and G.lucidum 10.It was found that G.sp.var Tianzhi,G.sp.var.Yuanzhi 6G.lucidum 8 and G.lucidum 10 showed the highest lignin-degrading enzymes activity.
文摘White rot fungus Pleurotus djamor H1 was stilly cultured at 28 ℃ under 4 different kinds of LNAS culture solution,the extracellular enzyme solutions were sampled at different interval,O.D.values of the solutions,representing manganese peroxidase(MnP),laccase and lignin peroxidase(LiP)activities,were measured spectrophotometrically by monitoring the oxidation of 2,6-DMP at 470 nm,ABTS at 420 nm and veratryl alcohol(VA)at 310 nm,the lignin-degrading enzymes of the fungus and the relationships between enzyme activities and medium composition and substrates were gained.Results indicated that Pleurotus djamor could produce MnP and laccase simultaneously,but no Lip.Substrates wood sawdust and 2,6-DMP could significantly enhanced MnP and laccase activities,the biggest Mnp and laccase activity were 5 U·L-1.and 38 U·L-1 when no substrates were added,and 69 U·L-1 and 205 U·L-1 when substrates added.The paper offered a basic ligninolytic enzymology of Pleurotus djamor for future utilization of the enzymes and further study on MnP and laccase mechanism of the fungus.
