Further studies on the sea cucumber Bohadschia marmorata Jaeger led to the isolation of a new holostan-type triterpene glycoside,Marmoroside C（1）together with a known triterpene glycoside（2）.On the basis of spectr...Further studies on the sea cucumber Bohadschia marmorata Jaeger led to the isolation of a new holostan-type triterpene glycoside,Marmoroside C（1）together with a known triterpene glycoside（2）.On the basis of spectroscopic analyses,including two- dimensional NMR techniques,and chemical reactions,the structure of the new triterpene glycoside was elucidated as 3-O-[3-O- methyl-β-D-glucopyranosyl-（1→3）-β-D-glucopyranosyl-（1→4）-β-D-quinovopyranosyl-（1→2）-4-O-sodium-sulfato-β-D-xylo- pyranosyl]-25-acetoxy-22-oxo-9（11）-holostene-3β,12α,17α-triol.展开更多
采用静水式急性毒性试验法研究了吡喹酮、甲苯咪唑和溴氰菊酯对花鳗鲡(Anguilla marmorata)(体重为0.87±0.19 g)的急性毒性。试验结果表明,在水温28±2℃时,吡喹酮对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为...采用静水式急性毒性试验法研究了吡喹酮、甲苯咪唑和溴氰菊酯对花鳗鲡(Anguilla marmorata)(体重为0.87±0.19 g)的急性毒性。试验结果表明,在水温28±2℃时,吡喹酮对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为73.85 mg/L、66.71 mg/L、56.57 mg/L、52.72 mg/L,安全浓度为16.34 mg/L;甲苯咪唑对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为142.81mg/L、13.80 mg/L、5.19mg/L、1.74mg/L,安全浓度为0.023 mg/L;溴氰菊酯对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为9.56μg/L、9.34μg/L、7.69μg/L、7.67μg/L,安全浓度为2.68μg/L。吡喹酮、甲苯咪唑、溴氰菊酯对花鳗鲡分别属于低毒、中毒、剧毒药物。甲苯咪唑对花鳗鲡的安全浓度0.023 mg/L远低于欧洲鳗鲡(Anguilla anguilla)的常用浓度1～2 mg/L,因此在花鳗鲡养殖中使用甲苯咪唑制剂需十分谨慎。展开更多
文摘Further studies on the sea cucumber Bohadschia marmorata Jaeger led to the isolation of a new holostan-type triterpene glycoside,Marmoroside C（1）together with a known triterpene glycoside（2）.On the basis of spectroscopic analyses,including two- dimensional NMR techniques,and chemical reactions,the structure of the new triterpene glycoside was elucidated as 3-O-[3-O- methyl-β-D-glucopyranosyl-（1→3）-β-D-glucopyranosyl-（1→4）-β-D-quinovopyranosyl-（1→2）-4-O-sodium-sulfato-β-D-xylo- pyranosyl]-25-acetoxy-22-oxo-9（11）-holostene-3β,12α,17α-triol.
文摘采用静水式急性毒性试验法研究了吡喹酮、甲苯咪唑和溴氰菊酯对花鳗鲡(Anguilla marmorata)(体重为0.87±0.19 g)的急性毒性。试验结果表明,在水温28±2℃时,吡喹酮对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为73.85 mg/L、66.71 mg/L、56.57 mg/L、52.72 mg/L,安全浓度为16.34 mg/L;甲苯咪唑对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为142.81mg/L、13.80 mg/L、5.19mg/L、1.74mg/L,安全浓度为0.023 mg/L;溴氰菊酯对花鳗鲡的24 h LC50、48 h LC50、72 h LC50、96 h LC50分别为9.56μg/L、9.34μg/L、7.69μg/L、7.67μg/L,安全浓度为2.68μg/L。吡喹酮、甲苯咪唑、溴氰菊酯对花鳗鲡分别属于低毒、中毒、剧毒药物。甲苯咪唑对花鳗鲡的安全浓度0.023 mg/L远低于欧洲鳗鲡(Anguilla anguilla)的常用浓度1～2 mg/L,因此在花鳗鲡养殖中使用甲苯咪唑制剂需十分谨慎。
