L-Glutamic Acid Assay Kit

The L-Glutamic Acid test kit is a simple, reliable, rapid and accurate method for the measurement and analysis of L-glutamate (MSG) in foodstuffs.

Suitable for manual, auto-analyser and microplate formats.

Product Code
60 assays (manual) / 600 assays (microplate)
/ 700 assays (auto-analyser)

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Colourimetric method for the determination of L-Glutamic Acid
(Monosodium Glutamate; MSG) in foodstuffs and other materials

                         (beef liver glutamate dehydrogenase)
(1) L-Glutamic acid + NAD+ + H2O ↔ 2-oxoglutarate + NADH + NH4+

(2) INT + NADH + H+ → NAD+ + INT-formazan

Kit size:                             60 assays (manual) / 600 (microplate)
                                          / 700 (auto-analyser)
Method:                            Spectrophotometric at 492 nm
Reaction time:                  ~ 8 min
Detection limit:                 0.21 mg/L
Application examples:
Fruit and vegetables (e.g. tomato), processed fruit and vegetables
(e.g. tomato puree / juice, ketchup, soy sauce), condiments, processed
meat products (e.g. extracts, bouillon and sausages), soup, pharmaceuticals
and other materials (e.g. biological cultures, samples, etc.)
Method recognition:    
Methods based on this principle have been accepted by ISO, GOST
and NMKL


  • Very competitive price (cost per test)
  • All reagents stable for > 2 years after preparation
  • Glutamate dehydrogenase solution stable at -20°C
  • No wasted diaphorase solution (stable suspension supplied)
  • Rapid reaction
  • Mega-Calc™ software tool is available from our website for hassle-free raw data processing
  • Standard included
  • Suitable for manual, microplate and auto-analyser formats

Surfactant to dye binding degree based approach for the selective determination of L-glutamate in foodstuffs.

Pedraza, A., Sicilia, M. D., Rubio, S. & Pérez-Bendito, D. (2007). Analytical and Bioanalytical Chemistry, 389(7-8), 2297-2302.

Production of stable quinine nanodispersions using esterified γ-polyglutamic acid biopolymer.

Hoennscheidt, C., Kreyenschulte, D., Margaritis, A. & Krull, R. (2013). Biochemical Engineering Journal, 79, 259-266.

Gamma-amino butyric acid, glutamate dehydrogenase and glutamate decarboxylase levels in phylogenetically divergent plants.

Seher, Y., Filiz, O. & Melike, B. (2013). Plant Systematics and Evolution, 299(2), 403-412.

Astrocytic glutamate transporter-dependent neuroprotection against glutamate toxicity: An in vitro study of maslinic acid.

Qian, Y., Guan, T., Tang, X., Huang, L., Huang, M., Li, Y., Sun, H., Yu, R. & Zhang, F. (2011). European Journal of Pharmacology, 651(1-3), 59-65.

The rice R2R3-MYB transcription factor OsMYB55 is involved in the tolerance to high temperature and modulates amino acid metabolism.

El-kereamy, A., Bi, Y. M., Ranathunge, K., Beatty, P. H., Good, A. G. & Rothstein, S. J. (2012). PloS one, 7(12), e52030.

Below you will find a link to our dedicated frequently asked questions section. Within this section you will find common questions and answers on a range of topics about the product.