麦芽β-葡聚糖酶/地衣酶检测试剂盒(MBG4方法), K-MBG4
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- 产地爱尔兰
- 品牌Megazyme
- 货号K-MBG4
- 规格100 assays
详细描述
Megazyme麦芽β-葡聚糖酶/地衣酶检测试剂盒(MBG4方法), K-MBG4 包含单个衬底,即4,6- ø -亚苄基-2-氯-4-硝基苯基-β-(3 1 -β-d-纤维素三糖葡糖苷)(BCNPBG4)。亚苄基乙缩醛基团通过外切作用的水解酶(例如β-葡萄糖苷酶或纤维二糖水解酶)防止任何水解作用 。
混合连接的β-葡聚糖酶(-1,3:1,4-β- 葡聚糖内切酶)/地衣酶(EC 3.2.1.73)特异性地从该底物中释放2-氯-4-硝基苯酚(CNP)。CNP的释放速率与样品中的β-葡聚糖酶/地衣酶活性直接相关。加入Tris缓冲溶液(pH = 10.0)后,反应终止,苯酚盐显色。
注意,底物不被β-葡糖苷酶或纤维二糖水解酶水解。底物可以被某些内切纤维素酶(例如木霉 属( Trichoderma sp。))水解, 但这不会导致吸光度的增加。
数据计算器位于“ 文档”选项卡中。
内容: | (麦芽β-葡聚糖酶) 100次测定(手动)/ 400次(自动分析仪)或 (地衣酶)100/200次测定(手动)/ 330次(自动分析仪) |
运输温度: | 室温 |
贮存温度: | 短期稳定性:2-8 o C, 长期稳定性:参见各个组件标签 |
稳定性: | 在推荐的存储条件下> 2年 |
分析物: | β-葡聚糖酶/地衣酶 |
分析形式: | 分光光度计,自动分析仪 |
检测方法: | 吸光度 |
波长(nm): | 400 |
信号响应: | 增加 |
检测限: | (麦芽β-葡聚糖酶) 4.3 x 10 -4 U / mL 或 (苔藓酶) 9.1 x 10 -5 U / mL |
重复性(%): | 〜3% |
总测定时间: | (麦芽糖β-葡聚糖酶)〜20分钟或 (地衣脂酶)〜10分钟 |
应用实例: | 粗麦芽提取物,工业酶制剂。 |
方法识别: | 新颖的方法 |
Megazyme麦芽β-葡聚糖酶/地衣酶检测试剂盒(MBG4方法), K-MBG4
优点
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非常划算
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所有试剂均稳定> 2年
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特异于 内源性-1,3:1,4-β-葡聚糖酶/地衣酶
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简单,方便,快速的测定
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非常适合自动化
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包括麦芽面粉标准品和地衣酵素标准品
麦芽β-葡聚糖酶/β-葡聚糖酶检测试剂盒 Malt β-Glucanase/Lichenase Assay Kit (MBG4 Method) 货号:K-MBG4 Megazyme试剂盒
- 麦芽β-葡聚糖酶/β-葡聚糖酶检测试剂盒
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英文名:Malt β-Glucanase/Lichenase Assay Kit (MBG4 Method)
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货号:K-MBG4
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规格:100 assays (manual) / 400 assays (auto-analyser)
市场价: 4664元
alt β-glucanase:
100 assays (manual format) / 400 assays (auto-analyser format)
Lichenase:
100 / 200 assays (manual format) / 330 assays (auto-analyser format)
The MBG4 reagent contains a single substrate, namely 4,6-O-benzylidene-2-chloro-4-nitrophenyl-β-(31-β-D-cellotriosyl-glucoside) (BCNPBG4). The benzylidene acetal group prevents any hydrolytic action by exo-acting hydrolytic enzymes such as β-glucosidase or cellobiohydrolase. Mixed linkage
β-glucanase (endo-1,3:1,4-β-glucanase) / lichenase (EC 3.2.1.73) acts specifically to release 2-chloro-4-nitrophenol (CNP) from this substrate. The rate of release of CNP is directly related to the β-glucanase/lichenase activity in a sample. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH = 10.0).
Note that the substrate is not hydrolysed by β-glucosidase or cellobiohydrolase. The substrate can be hydrolysed by certain endo-cellulases (e.g.Trichoderma sp.) but this does not result in an increase in absorbance.
Data calculators are located in the Documentation tab.
DESCRIPTION
Catalase (Aspergillus niger)
EC 1.11.1.16
CAS: 9001-05-2
Synonyms:
catalase; hydrogen-peroxide:hydrogen-peroxide oxidoreductase
Form:
In 3.2 M ammonium sulphate.
Supplied at ~ 18,000 U/mL.
Stability:
> 2 years at 4oC.
Specific activity:
~ 4,960 U/mg protein (using A240 method) at pH 7.0 and 25oC.
Unit definition:
One Unit of catalase activity will decompose 1 micromole of H2O2 per minute at pH 7.0 and 25oC, while the H2O2 concentration falls from 10.3 mM to 9.2 mM. The rate of disappearance of H2O2 is followed by observing the rate of decrease in the absorbance at
240 nm (A240).
Specificity:
Decomposition of hydrogen peroxide into water and oxygen.
Applications:
For use in research.
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