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Catalase Assay Kit

sufficient for ≥100 tests enzymatic, determination of catalase activity in tissues and cells


Quality Level


sufficient for ≥100 tests enzymatic

detection method


shipped in

wet ice

storage temp.


Gene Information

human ... CAT(847)

General description

The Catalase Assay Kit contains all necessary components for studying catalase activity in various tissues and subcellular organelles.


Sutitable for Colorimetric and UV Assays

Biochem/physiol Actions

Catalase is a ubiquitous antioxidant enzyme which catalyses the decomposition of hydrogen peroxide (H2O2) to water and oxygen. Hydrogen peroxide is formed in the eukaryotic cell as a by-product of various oxidases and superoxide dismutases. Hydrogen peroxide accumulation in cells causes oxidation of cellular targets such as DNA, proteins, and lipids leading to mutagenesis and cell death. Removal of the H2O2 from the cell by catalase provides protection against oxidative damage to living cells and its role in oxidative stress related diseases has been widely studied.

Features and Benefits

  • Useful for determining catalase activity - may be used in various tissues and cells
  • Simple, optimized protocol - A simple colorimetric assay for analysis of peroxisome enrichment and catalase activity


Suitable for studying catalase activity in various tissues and subcellular organelles.


This assay method is based on the measurement of the hydrogen peroxide substrate remaining after the action of catalase. First, the catalase converts hydrogen peroxide to water and oxygen (catalatic pathway) and then this enzymatic reaction is stopped with sodium azide. An aliquot of the reaction mix is then assayed for the amount of hydrogen peroxide remaining by a colorimetric method.10 The colorimetric method uses a substituted phenol (3,5-dichloro-2-hydroxybenzenesulfonic acid), which couples oxidatively to 4-aminoantipyrine in the presence of hydrogen peroxide and horseradish peroxidase (HRP) to give a red quinoneimine dye (N-(4-antipyryl)-3-chloro-5-sulfonatep-benzoquinone-monoimine) that absorbs at 520 nm

Unit Definition

One unit of catalase will decompose 1.0 micromole of hydrogen peroxide to oxygen and water per minute at pH 7.0 at 25 °C at a substrate concentration of 50 mM hydrogen peroxide.

Preparation Note

Use ultrapure water in preparation of all solutions.

Kit Components Also Available Separately

Product No.

  • P6782Peroxidase from horseradish, Type VI-A, essentially salt-free, lyophilized powder, 950-2000 units/mg solid (using ABTS), ≥250 units/mg solid (using pyrogallol) 5 mg

  • 323381Hydrogen peroxide solution, contains ~200 ppm acetanilide as stabilizer, 3 wt. % in H2O


Health hazard

Signal Word


Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

12 - Non Combustible Liquids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Product Information Sheet

Quotes and Ordering

Susmita Das Nishu et al.
PloS one, 14(3), e0213370-e0213370 (2019-03-13)
Algicidal bacteria have received broad acceptance as an ecofriendly tool for controlling harmful algal blooms. However, their practical application is still limited to the lab-scale tests due to the complex alga-bacterium interactions in different nutrient statuses. In this study, the
M Ding et al.
Journal of cell science, 113 ( Pt 13), 2409-2419 (2000-06-15)
The intracellular protozoan parasite Toxoplasma gondii, like all members of the phylum Apicomplexa, is known to possess many organelles: in addition to mitochondria and the compartments of the secretory pathway, there is a reduced chloroplast (the apicoplast) and the phylum-specific
S Tada-Oikawa et al.
FEBS letters, 442(1), 65-69 (1999-01-29)
Pulsed field gel electrophoresis showed that the initiation time of DNA breakage induced by the DNA alkylating agent duocarmycin A, which is not a redox-cycling agent, was almost the same in the human leukemia cell line HL-60 and its H2O2-resistant
Andrea de Oliveira Falcão et al.
Food technology and biotechnology, 55(4), 553-561 (2018-03-16)
Enzymatic interesterification is used to manipulate oil and fat in order to obtain improved restructured lipids with desired technological properties. However, with raw materials containing significant amounts of bioactive compounds, the influence of this enzymatic process on the bioactivity of
M E Tome et al.
Cancer research, 61(6), 2766-2773 (2001-04-06)
Glucocorticoids are used for the treatment of lymphoid neoplasms, taking advantage of the well-known ability of these compounds to cause apoptosis in lymphoid tissues. Previously, we have shown that dexamethasone, a synthetic glucocorticoid, causes a down-regulation of several antioxidant defense


Organelle Isolation

The isolation of subcellular fractions by centrifugation is a commonly used technique and is widely applicable across multiple cell and tissue types. Because organelles differ in their size, shape, and density, centrifugation can be easily employed to separate and purify organelle fractions from gently homogenized samples.

Mitochondrial Stress and ROS

Oxidative stress is mediated, in part, by reactive oxygen species produced by multiple cellular processes and controlled by cellular antioxidant mechanisms such as enzymatic scavengers or antioxidant modulators. Free radicals, such as reactive oxygen species, cause cellular damage via cellular.

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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