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Related Experiment Video

Updated: Jun 24, 2026

A Straightforward Method for Glucosinolate Extraction and Analysis with High-pressure Liquid Chromatography (HPLC)
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Published on: March 15, 2017

Screening Brassica species for glucosinolate content.

George F Antonious1, Michael Bomford, Paul Vincelli

  • 1Department of Plant and Soil Science, Land Grant Program, Atwood Research Center, Kentucky State University, Frankfort, Kentucky 40601-2355, USA. george.antonious@kysu.edu

Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes
|March 13, 2009
PubMed
Summary

Brassica plants, rich in glucosinolates (GSLs), can be used as biofumigants. Environmental stress increases GSLs, phenols, and ascorbic acid in Brassica shoots, but not yield per area.

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Area of Science:

  • Agricultural Science
  • Plant Science
  • Biochemistry

Background:

  • Glucosinolates (GSLs) in Brassica plants yield toxic isothiocyanates, effective against soil-borne pathogens.
  • Phenols and ascorbic acid in Brassica may enhance GSL biofumigant activity.

Purpose of the Study:

  • Identify Brassica cover crops for biofumigation.
  • Investigate the impact of growing conditions on GSL, phenol, and ascorbic acid content.

Main Methods:

  • Surveyed Brassica accessions for biofumigant potential.
  • Grew selected accessions (B. juncea, B. napus, B. campestris, E. sativa) under varied climatic conditions.
  • Quantified GSLs using thioglucosidase and colorimetry; measured phenols and ascorbic acid.

Main Results:

  • Field-grown Brassica shoots had higher GSL concentrations (76 µmol g⁻¹) than greenhouse (24 µmol g⁻¹) or high tunnel (40 µmol g⁻¹).
  • B. juncea accessions generally showed the highest GSL content.
  • Environmental stress increased GSL, phenol, and ascorbic acid concentrations but not yield per area.

Conclusions:

  • Environmental stress enhances phytochemical concentration in Brassica shoots, indicating potential for biofumigant development.
  • B. juncea 'Pacific Gold' offers a promising balance of high biomass and GSL production.
  • Phytochemical concentration is often inversely correlated with biomass yield.