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Key Documents

MAK524

Sigma-Aldrich

Isocitrate Assay Kit

sufficient for 100 colorimetric tests

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About This Item

UNSPSC Code:
12161503
NACRES:
NA.84

Quality Level

application(s)

food and beverages

detection method

colorimetric

relevant disease(s)

cancer

shipped in

wet ice

storage temp.

−20°C

General description

Isocitrate (isocitric acid) is a substrate in the citric acid (TCA) cycle. Isocitrate is formed by the isomerization of citrate catalyzed by the enzyme aconitase. Isocitrate is oxidized by isocitrate dehydrogenase producing α-ketoglutarate and generating NADPH. Isocitrate is commonly found in many fruits and vegetables and their processed products. Industrially, isocitrate is used as a marker to identify the quality and purity of fruit juices.

Features and Benefits

  • Linear detection range: 20 to 5000 µM
  • Compatible with high-throughput handling systems.

Suitability

The kit is suitable for isocitrate determination in food, beverages, and biological samples (e.g. cell lysate, tissue homogenate, serum, etc.).

Principle

The Isocitrate Assay Kit measures the NADPH generated from the oxidation of isocitrate. The NADPH converts the dye to an intense violet color with an absorption maximum at 565 nm. The increase in absorbance at 565 nm is directly proportional to the isocitrate concentration.

Storage Class Code

10 - Combustible liquids

WGK

WGK 2


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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