Megazyme K-XylX6-2V 内切木聚糖酶测定试剂盒(xylx6法)

Megazyme K-XylX6-2V 内切木聚糖酶测定试剂盒(xylx6法)

Megazyme试剂盒代理、Megazyme代理
欢迎访问Megazyme官网或者咨询我们获取更多产品信息
内切木聚糖酶测定试剂盒(xylx6法)
英文名:endo-Xylanase Assay Kit (XylX6 Method)
货号:K-XYLX6-1V
规格:100 assays (manual) / 200 assays (auto-analyser)
品牌: Megazyme

Megazyme K-XYLX6 内切木聚糖酶测定试剂盒(xylx6法)

The XylX6 assay reagent for the measurement of endo-xylanase (endo-1,4-β-xylanase) contains two components; 1) 4,6-O-(3-Ketobutylidene)-4-nitrophenyl-β-D-45-glucosyl-xylopentaoside and 2) β-xylosidase. The ketone blocking group prevents any hydrolytic action by the β-xylosidase or other exo-acting glycosidases on the XylX6 substrate. Incubation with an endo-xylanase generates a non-blocked colourimetric oligosaccharide that is rapidly hydrolysed by the ancillary β-xylosidase. The rate of formation of 4-nitrophenol is therefore directly related to the hydrolysis of XylX6 by the endo-xylanase. The reaction is terminated and the phenolate colour is developed on addition of Tris buffer solution (pH = 10.0).

Colourimetric method for the determination of endo-1,4-β-xylanase in any
sample type including crude enzyme extracts, fermentation broths or
commercial enzyme preparations

Principle:
(endo-1,4-β-xylanase)
(1) 3-Ketobutylidene-GX5-β-PNP + H2O → Blocked-GXY + X(5-Y)-β-PNP

(β-glucosidase)
(2) X(5-Y)-β-PNP + H2O → D-xylose + PNP

(alkaline solution)
(3) PNP → phenolate ion (yellow colour)
Note: PNP = 4-nitrophenol

Kit size:
K-XylX6-1V 100 assays (manual) / 200 (auto-analyser)
or
K-XylX6-2V 200 assays (manual) / 400 (auto-analyser)

Method:                         Spectrophotometric at 400/405 nm
Total assay time:           10 min
Detection limit:                5.3 x 10-4 U/mL
Application examples:
Fermentation broths, industrial enzyme preparations, animal feed, biofuels research, barley
malt analysis
Method recognition:     Novel method

用于测量内木聚糖酶(内-1,4-β-木聚糖酶)的XylX6分析试剂包含两个成分; 1)4,6-O-(3-酮丁烯)-4-硝基苯基-β-D-45-葡糖基-木糖基opentaoside和2)β-木糖苷酶。酮保护基团可防止XylX6底物上的β-木糖苷酶或其他exo-acting糖苷酶产生任何水解作用。与木聚糖内切酶一起温育会产生非封闭的比色寡糖,该寡糖会被辅助β-木糖苷酶快速水解。因此,4-硝基苯酚的生成速率与内木聚糖酶水解XylX6直接相关。加入Tris缓冲溶液(pH = 10.0)后,反应终止,苯酚盐显色。

用比色法测定任何动物体内的1,4-β-木聚糖内切酶
样品类型,包括粗酶提取物,发酵液或
商业酶制剂

原则:
(1,4-β-木聚糖内切酶)
(1)3-酮丁烯-GX5-β-PNP+ H2O→嵌段-GXY + X(5-Y)-β-PNP

(β-葡萄糖苷酶)
(2)X(5-Y)-β-PNP+ H2O→D-木糖+ PNP

(碱性溶液)
(3)PNP→酚盐离子(黄色)
注意:PNP = 4-硝基苯酚

套件尺寸:
K-XylX6-1V 100次检测(手动)/ 200次(自动分析器)
或者
K-XylX6-2V 200次检测(手动)/ 400次(自动分析器)

方法:分光光度法在400/405 nm下进行分光光度法
总测定时间:10分钟
检测限:5.3 x 10-4 U / mL
应用实例:
发酵液,工业酶制剂,动物饲料,生物燃料研究,大麦
麦芽分析
方法识别:新颖方法