摘要
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.
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.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2009年第12期154-158,共5页
Scientia Silvae Sinicae
基金
国家自然科学基金项目(30671700)
关键词
红平菇
木质素降解酶系统
锰过氧化物酶
漆酶
酶活检测
Pleurotus djamor
ligninolytic enzymes
manganese peroxidase
laccase
enzyme activity detection