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耐热酶
相关语句
  heat resistant enzymes
     Influence of Heat Resistant Enzymes and Milk Components on the Stability of UHT Milk
     耐热酶与乳成分对UHT乳稳定性影响的研究
短句来源
  “耐热酶”译为未确定词的双语例句
     The range of enzyme pH stability was 3.5 ~ 6.0.The effect of mental irons on the β-glucanase activity was investigated.
     该酶是一种耐热酶,在有底物保护条件下,酶的热稳定性可有一定幅度的提高,酶的pH稳定性范围为3.5~6.0。
短句来源
     The optimal pH and optimal temperature for enzyme action was 6.0 and 65—70℃ Thermal stability of the enzyme was good, after incubating at 70℃ for 5 minutes, 88% of the cellulase activity remained.
     酶作用的最适条件为:pH6.0,温度为65—70℃。 该纤维素酶是一种耐热酶,热稳定性较强,70℃保温5分钟后,酶活力剩余88%。
短句来源
     Thermophilic enzymes of extremophiles have many theoretical and applicationmerits in studying enzyme evolution, molecular mechanism of protein thermostabilityand the highest enzyme reaction temperature.
     嗜热菌产生的耐热酶在研究酶进化、蛋白质耐热的分子机制及酶功能上限温度等方面具有极其重要的理论和应用价值。
短句来源
     The results showed that the optimal temperature and optimal pH of the enzyme were 37 ℃ and 5.5.The thermal stability of the enzyme was good and could be improved with CMC existing.
     结果表明:酶作用的最适温度和pH值分别为37℃和5.5。 该酶是一种耐热酶,在有底物保护条件下,酶的热稳定性可大幅度提高。
短句来源
     The properties of chimeric enzyme were determined. The chimeric enzyme displayed pH activity and stability profiles similar to those of parental enzyme with optimal pH 5.8.The optimal activity of the chimera was observed at 100℃ and the enzyme kept 87% of original enzyme activity after incubated at 90℃ for 2h. A notable feature on substrate specificity is that the chimeric enzyme has the capacity to hydrolases crystalline cellulose.
     用同样极耐热酶CBD区域和Cel12B融合构建重组质粒pET-20b-Cel12B-CBD,经诱导表达后,对结晶纤维素有活性,酶学特性研究表明:最适反应温度为100℃、最适pH为5.8、在pH4.5~7.0时酶活力稳定,90℃保温2h仍有87%的酶活。
短句来源
  相似匹配句对
     A Strain Which Produces Thermostable Cellulases and The Conditions of Producing Cellulases
     耐热纤维素产生菌及产条件
短句来源
     Breeding of Thermostable Glucoamylase Strains by Microwave Mutation
     微波诱变选育耐热糖化菌株
短句来源
     Enzyme mimics
     模型
短句来源
     It couldn’t express in T.
     但该在T .
短句来源
     Heat-proof PVC resin
     耐热PVC树脂
短句来源
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  thermostable enzyme
101 appeared as the most thermostable enzyme; its counterpart from Glycine max exhibited the lowest stability.
      
Use of the cells containing this thermostable enzyme allowed the process to be conducted at a temperature of 70°C, which provided the maximal concentrations of sparingly soluble substrates.
      
The oligosaccharide yield obtained with this thermostable enzyme is independent of the initial lactose concentration and temperature and a factor 1.4 higher than reported for mesophilic enzymes.
      
The β-glucosidase was the most thermostable enzyme, remaining 100% active when incubated at 75°C for 1 h.
      
The highly thermostable enzyme was purfied 3600-fold by affinity chromatography to apparent homogeneity in a 60% yield.
      
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  thermotolerant enzymes
Industrial use of cellulase enzymes, including β-D-glucosidases, can be greatly improved and expanded by the discovery and characterization of more robust, thermotolerant enzymes.
      


A thermophilic fungus, Humicola insolens was isolated from humus in Beijing. The conditions of production and properties of eellulase of the fungus have been investigated. After growing in shaking flasks containing 5% wheat bran and 0.3% NaNO_3 (pH 7.5 before and 7.2 after sterilization) at 45℃ for 4 days, the potency of the crude culture filtrate acting on carboxymethylcellulose (sodium salt) was 20 units per ml. The optimal pH and optimal temperature for enzyme action was 6.0 and 65—70℃ Thermal stability of...

A thermophilic fungus, Humicola insolens was isolated from humus in Beijing. The conditions of production and properties of eellulase of the fungus have been investigated. After growing in shaking flasks containing 5% wheat bran and 0.3% NaNO_3 (pH 7.5 before and 7.2 after sterilization) at 45℃ for 4 days, the potency of the crude culture filtrate acting on carboxymethylcellulose (sodium salt) was 20 units per ml. The optimal pH and optimal temperature for enzyme action was 6.0 and 65—70℃ Thermal stability of the enzyme was good, after incubating at 70℃ for 5 minutes, 88% of the cellulase activity remained. Substrate had protective action on the enzyme, when incubated together with CMC-Na at 70℃ for 6 hours, 30% of the cellulase activity remained, but only 1% remained in the absence of CMC-Na. The enzyme was stable at pH 6.0—9.0 at 45℃ for 15 hours.

由腐植土中分离到一株嗜热真菌,经鉴定为特异腐质霉(Humicola insolens Cooney etEmerson)。研究了这株菌纤维素酶的产生条件和一般性质。菌在含麦麸5%、NaNO0.3%的液体培养基(灭菌前pH7.5,灭菌后pH7.2)中,于45℃培养4天,以羧甲基纤维素钠为底物,每ml滤液酶活力为20个单位。酶作用的最适条件为:pH6.0,温度为65—70℃。该纤维素酶是一种耐热酶,热稳定性较强,70℃保温5分钟后,酶活力剩余88%。底物对该酶的热钝化有较强的保护作用,无底物存在条件下,70℃保温6小时后,酶活力仅剩余1%,而在同样的处理温度和时间,在有底物存在条件下,酶活力可剩余30%。该酶在45℃保温15小时的条件下,pH稳定范围为6.0—9.0。

The influence of heat on the conformation and stability of α amylase α Ⅲ fraction from Bacillus Licheniformis A.4041 was studied by means of the fluorescence and CD spectra. Heated at 80 ℃ for 15 min, the enzyme hardly lost its activity. At the same time, a considerable change of its fluorescence and CD spectra was observed. It was shown that, comparing with the whole conformation of the enzyme molecule, the active site has a relative stability. Heated at 90 ℃ for 15 min, the conformational and active...

The influence of heat on the conformation and stability of α amylase α Ⅲ fraction from Bacillus Licheniformis A.4041 was studied by means of the fluorescence and CD spectra. Heated at 80 ℃ for 15 min, the enzyme hardly lost its activity. At the same time, a considerable change of its fluorescence and CD spectra was observed. It was shown that, comparing with the whole conformation of the enzyme molecule, the active site has a relative stability. Heated at 90 ℃ for 15 min, the conformational and active changes resulted by Ca 2+ and starch were different. The Ca 2+ mainly affects the whole enzyme molecular conformations, whereas the substrate is important to sustain the activity. It indicates that the structure of enzymatic active site plays an important role to the thermostability of the α Ⅲ.

近年来,对耐热酶特别是耐高温淀粉酶的研究十分活跃[1~3],地衣芽孢杆菌A.4041是我国自行诱变的耐高温α-淀粉酶的生产菌株[4].为了探索耐热酶的热稳定机理和规律,本文采用荧光光谱和圆二色谱法对地衣芽孢杆菌A.4041耐高温α-淀粉酶α-Ⅲ纯酶组...

The stability of lysozyme that is extracted from egg's shell has been studied. The result showed that lysozyme isa heat-resisstant enzyme and is heat stable in acidic condition.

本试验对从鸡蛋壳下膜中提取的粗制溶菌酶热稳定性和酸碱稳定进行了研究,结果表明溶菌酶是一种较耐热的酶,酸性条件下酶活较高,酶活力损失小,碱性条件下不稳定,酶活力损失较大。

 
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