A high-throughput assay format for determination of nitrate reductase and nitrite reductase enzyme activities

Prabhakara V Choudary, Xiang Yang Liu, Prabhakara V. Choudary

Research output: Contribution to journalArticle

1 Scopus citations


The authors describe a microplate-based high-throughput procedure for rapid assay of the enzyme activities of nitrate reductase and nitrite reductase, using extremely small volumes of reagents. The new procedure offers the advantages of rapidity, small sample size-nanoliter volumes, low cost, and a dramatic increase in the throughput sample number that can be analyzed simultaneously. Additional advantages can be accessed by using microplate reader application software packages that permit assigning a group type to the wells, recording of the data on exportable data files and exercising the option of using the kinetic or endpoint reading modes. The assay can also be used independently for detecting nitrite residues/contamination in environmental/food samples.

Original languageEnglish (US)
Pages (from-to)29-36
Number of pages8
JournalApplied Biochemistry and Biotechnology
Issue number1
StatePublished - Jan 1997



  • assimilation
  • Candida utilis
  • environment
  • enzyme assay
  • food yeast, microplate
  • nitrate
  • nitric oxide synthase
  • nitrite
  • water

ASJC Scopus subject areas

  • Applied Microbiology and Biotechnology
  • Environmental Engineering
  • Bioengineering
  • Molecular Biology
  • Biotechnology
  • Biochemistry
  • Biochemistry, Genetics and Molecular Biology(all)

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