Growth inhibition of Fusarium graminearum and deoxynivalenol detoxification by lactic acid bacteria and their application in sourdough bread

Summary Eight lactic acid bacteria (LAB) strains were screened for their ability to inhibit Fusarium graminearum ( F . graminearum ) growth and remove deoxynivalenol (DON). Furthermore, the selected LAB strains were applied as starter cultures to evaluate their performance during the breadmaking process. Lactobacillus plantarum ( L . plantarum ) AR524 exhibited strong inhibitory activity against F . graminearum growth in a pH‐dependent manner and removed up to 40.9% of DON, mainly through cell wall binding. Compared with the control, L . plantarum AR524 inhibited 60.19% of F . graminearum growth and removed 50.53% of DON during breadmaking. The texture properties of the bread were also remarkably improved by L . plantarum AR524, and its shelf life was extended from 3 days to 6 days without the application of any chemical preservatives. Therefore, L . plantarum AR524 shows excellent potential for application as a bioprotective starter culture in bakery products.