Phage-anti-immunocomplex assay for clomazone : |b Two-site recognition increasing assay specificity and facilitating adaptation into an on-site format.

Dublin Core

Title

Phage-anti-immunocomplex assay for clomazone : |b Two-site recognition increasing assay specificity and facilitating adaptation into an on-site format.

Subject

HERBICIDAS
CONTROL DE MALEZAS
BIBLIOGRAFIA NACIONAL QUIMICA
MUESTRAS DE AGUA
CLOMAZONA
2010

Abstract

The impact of the use of herbicides in agriculture can be minimized by compliance with good management practices that reduce the amount used and their release into the environment. Simple tests that provide real time on-site information about these chemicals are a major aid for these programs. In this work, we show that phage anti-immunocomplex assay (PHAIA), a method that uses phage-borne peptides to detect the formation of antibody-analyte immunocomplexes, is an advantageous technology to produce such field tests. A monoclonal antibody to the herbicide clomazone was raised and used in the development of conventional competitive and noncompetitive PHAIA immunoassays. The sensitivity attained with the PHAIA format was over 10 times higher than that of the competitive format. The cross-reactivity of the two methods was also compared using structurally related compounds, and we observed that the two-site binding of PHAIA "double-checks" the recognition of the analyte, thereby increasing the assay specificity. The positive readout of the noncompetitive PHAIA method allowed adaptation of the assay into a rapid and simple format where as little as 0.4 ng/mL clomazone (more than 10-fold lower than the proposed standard) in water samples from a rice field could be easily detected by simple visual inspection.

Creator

Rossotti, M. A
González Techera, Andrés
Hammock, B. D
Last, J

Source

Analytical Chemistry v. 82, no. 1, 2010. -- p. 8838-8843

Publisher

American Chemical Society

Date

2010

Rights

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Format

PDF

Language

Inglés

Type

Artículo

Identifier

DOI: 10.1021/ac101476f

Document Item Type Metadata

Original Format

PDF
Date Added
December 18, 2014
Collection
Bibliografía Nacional Química
Item Type
Document
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Citation
Rossotti, M. A et al., “Phage-anti-immunocomplex assay for clomazone : |b Two-site recognition increasing assay specificity and facilitating adaptation into an on-site format.,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/2337.