Innovative ultrasound-assisted approaches towards reduction of heavy metals and Iodine in macroalgal biomass

Noriega-Fernández, E. ; Sone, I. ; Astráin-Redín, L. (Universidad de Zaragoza) ; Prabhu, L. ; Sivertsvik, M. ; Álvarez, I. (Universidad de Zaragoza) ; Cebrián, G. (Universidad de Zaragoza)

Resumen: The aim of this work was to evaluate the potential of ultrasound (US), alone or in combination with mild heating and/or EDTA towards reduction of As, Cd, I, and Hg content of Laminaria hyperborea. Concentrations of As, Cd, I, and Hg of 56.29, 0.596, 7340, and <0.01 mg kg−1 of dry weight, respectively, were found in L. hyperborea blades. Treatment with US at 50 °C increased approx. 2-fold the amount of As released, although did not affect significantly the content of Cd or I, as compared to control (no US) samples. Reducing the temperature to 8 °C significantly decreased the effect of US, but heating at 80 °C did not cause a significant effect as compared to treatments at 50 °C. On the other hand, treatment with 0.1 N EDTA at 50 °C enhanced the percentage of Cd released by approximately 7-fold, regardless of sonication. In the present work, the combination of US and EDTA at 50 °C for 5 min led to a significant reduction of the As (32%), Cd (52%) and I (31%) content in L. hyperborea, thus improving the product’s safety for consumers.

Idioma: Inglés

DOI: 10.3390/foods10030649

Año: 2021

Publicado en: Foods 10, 3 (2021), 649 [13 pp.]
ISSN: 2304-8158

Factor impacto JCR: 5.561 (2021)

Categ. JCR: FOOD SCIENCE & TECHNOLOGY rank: 35 / 144 = 0.243 (2021) - Q1 - T1

Factor impacto CITESCORE: 4.1 - Social Sciences (Q1) - Health Professions (Q1) - Agricultural and Biological Sciences (Q2) - Immunology and Microbiology (Q3)

Factor impacto SCIMAGO: 0.726 - Food Science (Q1) - Plant Science (Q1) - Microbiology (Q1) - Health Professions (miscellaneous) (Q1)

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Tecnología de Alimentos (Dpto. Produc.Animal Cienc.Ali.)