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http://hdl.handle.net/1843/41727| Type: | Artigo de Periódico |
| Title: | Physicochemical changes and microbial inactivation after high-intensity ultrasound processing of prebiotic whey beverage applying different ultrasonic power levels |
| Authors: | Jonas Toledo Guimarães Eric Keven Silva Verônica Ortiz Alvarenga Ana Letícia Rodrigues Costa Lelis Rosiane Lopes da Cunha Anderson de Souza Sant'Ana Monica Queiroz Freitas Maria Angela de Almeida Meireles Adriano Gomes da Cruz |
| Abstract: | In this work, we investigated the effects of the ultrasonic power (0, 200, 400 and 600 W) on non-thermal processing of an inulin-enriched whey beverage. We studied the effects of high-intensity ultrasound (HIUS) on microbial inactivation (aerobic mesophilic heterotrophic bacteria (AMHB), total and thermotolerant coliforms and yeasts and molds), zeta potential, microstructure (optical microscopy, particle size distribution), rheology, kinetic stability and color. The non-thermal processing applying 600 W of ultrasonic power was comparable to high-temperature short-time (HTST) treatment (75 °C for 15 s) concerning the inactivation of AMHB and yeasts and molds (2 vs 2 log and 0.2 vs 0.4 log, respectively), although HIUS has reached a lower output temperature (53 ± 3 °C). The HIUS was better than HTST to improve beverage kinetic stability, avoiding phase separation, which was mainly attributed to the decrease of particles size, denaturation of whey proteins and gelation of polysaccharides (inulin and gellan gum). Thus, non-thermal processing by HIUS seems to be an interesting technology for prebiotic dairy beverages production. |
| Subject: | Tecnologia de alimentos Leite Soro de leite |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | FAR - DEPARTAMENTO DE ALIMENTOS |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | 10.1016/j.ultsonch.2018.02.012 |
| URI: | http://hdl.handle.net/1843/41727 |
| Issue Date: | Jun-2018 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S1350417718301901#! |
| metadata.dc.relation.ispartof: | Ultrasonics Sonochemistry |
| Appears in Collections: | Artigo de Periódico |
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