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  secondary metabolites
Belyakov, Marine Microorganisms and Their Biologically Active Secondary Metabolites,
      
Analysis of Secondary Metabolites of Microscopic Fungi of the Genus Penicillium by Chromatographic Techniques
      
Occurrence of Indole Alkaloids among Secondary Metabolites of Soil Aspergillus Spp.
      
Secondary metabolites of three strains of Penicillium aurantiogriseumisolated from permafrost sediments were identified.
      
It was demonstrated that the fungus Penicillium expansum 2-7, a resident strain of the orbital complex Mir, which became dominant at the end of a long-term space flight, formed biologically active secondary metabolites (antibiotics).
      
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  secondary metabolite
Biological Evaluation of a Secondary Metabolite, 9-O-methylfusarubin, from Fusarium oxysporum
      
In many gram-negative bacteria, AHL are the key factors responsible for density-dependent regulation of exoenzyme and secondary metabolite production; they also participate in interaction between bacteria and higher organisms.
      
The strain KMM 3427, identified asBacillus subtilis, synthesized the secondary metabolite 2-p-hydroxyphenylalcohol (tyrosol), which is known to be an antifungal compound and may perform the function of chemical defence inVerongia sp.
      
nana is a cultivated variety of Taxus cuspidata and contains taxol, a valuable secondary metabolite of medical importance, both in their stems and leaves.
      
Nitric oxide (NO) has emerged as a key signaling molecule in plant secondary metabolite biosynthesis recently.
      
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OBJECTIVE To induce the hairy roots autotetraploid Isatis indigotoca Fort.and discuss the probability to produce useful botanic secondary metabolites from hairy root culture on a large scale.METHODS The cotyledon leaf explants of autotetraploid Isatis indigotoca Fort.were infected by Agrobacterium rhizogenes strain A4,and five antiendotoxic active organic acids [Anthranilic acid,salicylic acid,syringic acid,benzoic acid and 3-(2-carboxyphenyl)-4(3H)-quinazolinone] were determined simultaneously...

OBJECTIVE To induce the hairy roots autotetraploid Isatis indigotoca Fort.and discuss the probability to produce useful botanic secondary metabolites from hairy root culture on a large scale.METHODS The cotyledon leaf explants of autotetraploid Isatis indigotoca Fort.were infected by Agrobacterium rhizogenes strain A4,and five antiendotoxic active organic acids [Anthranilic acid,salicylic acid,syringic acid,benzoic acid and 3-(2-carboxyphenyl)-4(3H)-quinazolinone] were determined simultaneously by high performance capillary electrophoresis.RESULTS The hairy roots of autotetraploid Isatis indigotica Fort.could be indced by Agrobacterium rhizogenes strain A4 and the hairy roots contained same five antiendotoxic active components as that in the primary plant.CONCLUSION Agrobacterium rhizogenes could induce hairy roots from polyploid plants and the hairy roots might be utilized to produce valuable botanic secondary metabolites.

目的 从菘蓝的同源四倍体植物诱导出毛状根并探讨用毛状根培养来大规模生产有用的药用植物次生代谢物的可能性。方法 利用发根农杆菌A4菌株对四倍体菘蓝进行感染 ,采用高效毛细管电泳法同时测定诱导出的毛状根中具有抗内毒素作用的五种有机酸 [邻氨基苯甲酸、水杨酸、丁香酸、苯甲酸、3 (2 苯甲酸 ) 4(3H) 喹唑酮 ]的含量。结果 A4菌株从四倍体菘蓝诱导出毛状根 ,且毛状根含有原植物中具有抗内毒素作用的五种有机酸。结论 发根农杆菌能诱导四倍体植物产生毛状根 ,我们有可能利用毛状根培养来生产有价值的植物次生代谢物

Through determining the contents of five active constituents (secondary metabolites) in Eucommia ulmoides leaves from seven regions,the author concluded that the ecological factors were important in regulating the synthesis and accumulation of active constituents of medicinal plant. Stepwise regression analysis and path analysis indicated that the major factor influencing the synthesis and accumulation of active constituents was the contents of trace elements in the soil. Meteorological factors,however,showed...

Through determining the contents of five active constituents (secondary metabolites) in Eucommia ulmoides leaves from seven regions,the author concluded that the ecological factors were important in regulating the synthesis and accumulation of active constituents of medicinal plant. Stepwise regression analysis and path analysis indicated that the major factor influencing the synthesis and accumulation of active constituents was the contents of trace elements in the soil. Meteorological factors,however,showed little influence.

通过测定七个产区杜仲叶中 5种有效成分 (次生代谢物 )的含量 ,得出生态因素是调控药用植物有效成分合成与积累的重要因素。并对各种生态因素进行了逐步回归和通径分析 ,结果表明 :影响杜仲叶有效成分合成与积累的主要因素是土壤中的微量元素 ,而气象因素影响不大。

Object To investigate the content differences of secondary metabolites between Eucommia ulmoides Oliver original and reborn barks. Methods To measure the thickness of 17 years bark by vernier caliper, determine aucubin and flavonoids by spectrophotometer, and chlorogenic acid by HPLC. Results The thickness of original inner bark is 1.646 mm, and of reborn inner bark is 1.631 mm; the contents of chlorogenic acid, aucubin and flavonoids in original bark are: 0.402%, 0.781%, and 0.484%, and in reborn bark are:...

Object To investigate the content differences of secondary metabolites between Eucommia ulmoides Oliver original and reborn barks. Methods To measure the thickness of 17 years bark by vernier caliper, determine aucubin and flavonoids by spectrophotometer, and chlorogenic acid by HPLC. Results The thickness of original inner bark is 1.646 mm, and of reborn inner bark is 1.631 mm; the contents of chlorogenic acid, aucubin and flavonoids in original bark are: 0.402%, 0.781%, and 0.484%, and in reborn bark are: 0.436%, 0.849%, and 0.516% separately. Conclusion The thickness, as well as the contents of secondary metabolites of original and reborn barks are similar each other.

目的 探讨杜仲原生皮与再生皮的次生代谢物含量的差异性。方法 利用游标卡尺测量 17龄杜仲树的原生皮与再生皮的厚度 ,采用分光光度法测定桃叶珊瑚苷和总黄酮含量 ,采用高效液相色谱法测定绿原酸含量。结果杜仲原生皮和再生皮的内皮厚度分别为 1.6 4 6和 1.6 31mm;原生皮中绿原酸、桃叶珊瑚苷和总黄酮的含量分别为0 .4 0 2 % ,0 .781%和 0 .4 84 % ,再生皮中绿原酸、桃叶珊瑚苷和总黄酮的含量分别为 0 .4 36 % ,0 .84 9%和 0 .5 16 %。结论 原生皮与再生皮的厚度基本相同 ;原生皮与再生皮的次生代谢物含量无显著差异

 
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