The aim of this study was to determine if ropy spoilage in
bread could be reduced by the use of a fermentation product of
L. plantarum ITM21B in bread-making. The LAB strain was
grown in a defined medium or in three flour based media containing
or not containing α-ketoglutaric acid and an aminoacid
pool. The anti-Bacillus effects of the resulting fermentation products
were compared to those of a mixture of some of the organic
acids produced by L. plantarum ITM21B, and to calcium propionate,
a chemical preservative commonly used in the baking
industry.