Inactivation of in powdered infant formula with probiotics and metagenomic analysis.

UNLABELLED

In the present study, proper manual for powdered infant formula with probiotics (PIF-P) to prevent the contamination of was investigated. First, the population of and LAB in three different PIF-P samples were quantitatively analyzed after reconstituted with hydrothermal treatments. When was inoculated into reconstituted infant formula with probiotics (RIF-P), it was immediately reduced below the detection limit by 60-65 °C hydrothermal treatment whereas reduction levels of LAB was 1-2 log CFU/g. When heat resistance of inoculated to PIF-P with 4 h drying was compared with that inoculated to RIF-P samples, the heat resistance of increased significantly after the inoculation in PIF-P with drying. Metagenomic analysis revealed that and were dominant genus in all three groups and there was no significant difference in the microbial community of untreated PIF sample and hydrothermal treated samples.

SUPPLEMENTARY INFORMATION

The online version contains supplementary material available at 10.1007/s10068-023-01503-x.