Pierce Peroxide Assay Reagent A 过氧化物测定试剂A
货号：23281
规格：1 mL
价格：3125
产品类型：蛋白定量
品牌：Thermo Fisher
| Thermo Scientific Pierce Peroxide Assay Reagent A is a formulation consisting of 25mM ammonium ferrous sulfate. This formulation is one of the component of Quantitative Peroxide Assay Kit used for detecting and measuring hydrogen peroxide levels based on the oxidation of ferrous to ferric ion in the presence of xylenol orange, present in the biological and other liquid samples.In these assay kits, hydroperoxides convert the Fe2+ to Fe3+ at acidic pH. With the aqueous-compatible formulation, peroxide first reacts with sorbitol, converting it to a peroxyl radical, which in turn initiates Fe2+ oxidation to Fe3+. In the lipid compatible formulation, the peroxide converts the Fe2+ to Fe3+ directly. In a sulfuric acid solution, the Fe3+ complexes with the xylenol orange (XO) dye to yield a purple product having an absorbance maximum at 560nm. Peroxide levels in test samples can be determined by calculation from the know extinction coefficient of the XO-Fe complex or by reference to a standard curve prepared with hydrogen peroxide solution.Most proteins do not interfere with these assays, although some metal chelators may require use of a blank (i.e., control) to mitigate these effects. |
| 应用： |
| - General hydrogen peroxide (H2O2) measurement in protein samples- Quantitation of peroxides in detergents- Assessment of the effects of peroxides on cellular activity- Determination of protein glycation; Measurement of peroxide accumulation in lipids |
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