Lactic acid utilization was accompanied by increases in acetic acid and 1,2- propanediol, and Lactobacillus rapi was able to convert 1,2-propanediol to propionic acid and propanol.
L. buchneri initiated spoilage in a wide range of environmental conditions that may be present in commercial cucumber fermentations, and L. rapi may act syntrophically with L. buchneri to produce the commonly observed spoilage metabolites.