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Impact of Erwinia gerundensis as a Biocontrol Agent on the Sanitary and Technological Quality of Barley Malt.

Authors :
Gnonlonfoun, Eusèbe
Fotin, Gabriela
Schwebel, Sophie
Colin, Catherine
Salles, Marjorie
Parant, Vanessa
Alonso, Pascal
Moreau, Fabienne
Borges, Frédéric
Revol-Junelles, Anne-Marie
Schmitt, Marc
Framboisier, Xavier
Fick, Michel
Rondags, Emmanuel
Source :
Journal of the American Society of Brewing Chemists; 2024, Vol. 82 Issue 2, p120-133, 14p
Publication Year :
2024

Abstract

This study investigates the use of a barley-associated Erwinia gerundensis strain as a biocontrol agent for the protection of malt against fungal development and mycotoxin production during the malting of barley. First, the antifungal activity of E. gerundensis was studied via simultaneous co-cultures in Yeast Malt broth and on barley kernels artificially infected with Fusarium tricinctum. Then, the effect of E. gerundensis on the fungal load and mycotoxin content of malt obtained from naturally contaminated barley was studied by applying different doses of the bacterial strain at the steeping step of the malting process. Mycotoxin concentrations were determined using the technique of liquid chromatography coupled to the mass spectrometry detector in tandem (LC-MS/MS). Also, the effect of E. gerundensis on the technological quality of the final malt was evaluated using European Brewery Convention standard methods. The bacterial strain reduced the production of enniatin (ENN) by 97.7–99.8% and 38–68% in the liquid medium and on barley kernels, respectively, along with 0–82% Fusarium tricinctum growth reduction on barley kernels. Application of E. gerundensis at the beginning of the steeping step reduced the fungal load of the final malt by 67–72% and its ENN and deoxynivalenol (DON) contents by 32–50% and 15–33%, respectively, depending on the treatment dose. Barley malts treated with E. gerundensis showed no degradation in their technological quality, thus making E. gerundensis a potentially interesting biocontrol agent for the malting and brewing industries. Further investigation should be focused on improving the bioprotective capability of the proposed biocontrol agent. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
03610470
Volume :
82
Issue :
2
Database :
Complementary Index
Journal :
Journal of the American Society of Brewing Chemists
Publication Type :
Academic Journal
Accession number :
176211333
Full Text :
https://doi.org/10.1080/03610470.2023.2216630