The synbiotic food consisted of a probiotic Lactobacillus sporogenes ( 1107 CFU ) , 0.04 g inulin as prebiotic with 0.38 g isomalt , 0.36 g sorbitol and 0.05 g stevia as sweetener per 1 g. Control food ( the same substance without probiotic bacteria and inulin ) was packed in identical 9-gram packages .