| Autor: |
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 |
| Zdroj: |
Journal of the American Society of Brewing Chemists; April 2024, Vol. 82 Issue: 2 p120-133, 14p |
| Abstrakt: |
AbstractThis study investigates the use of a barley-associated Erwinia gerundensisstrain 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. gerundensiswas studied viasimultaneous co-cultures in Yeast Malt broth and on barley kernels artificially infected with Fusarium tricinctum. Then, the effect of E. gerundensison 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. gerundensison 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 tricinctumgrowth reduction on barley kernels. Application of E. gerundensisat 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. gerundensisshowed no degradation in their technological quality, thus making E. gerundensisa 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. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
|
