Application of thermo-cylindrical type focused-ultrasound as novel milk pasteurization: microbial inactivation, immunoglobulin G retention, and physicochemical characteristics.

ABSTRACT: This study aimed to investigate the efficacy of focused ultrasound as a novel milk pasteurisation technology to replace conventional low-temperature long-time (LTLT) method. The microbial inactivation, immunoglobulin G (IgG) retention, and physicochemical properties of milk treated with focused ultrasound were evaluated. Thermo-cylindrical type (55 °C) focused ultrasound was used for all experiments. Milk was subjected to focused ultrasound at 30 W and 100 W for 0, 10, 20, and 30 min to investigate the antimicrobial effects of this method. The total aerobic bacteria, coliforms, Escherichia coli O157:H7, and Listeria monocytogenes counts decreased (p < 0.05) with increasing focused-ultrasound power and treatment time. Thus, focused ultrasound treatments were applied at 30 W and 100 W for 30

SUBMITTER: Rathnayake PY 

PROVIDER: S-EPMC12605656 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature