Publication: Application of bifidobacterial phytases in infant cereals: effect on phytate contents and mineral dialyzability
Authors
Sanz-Penella, Juan Mario ; Monedero, Vicente ; Haros, Monika ; Frontela Saseta, María del Carmen ; Ros Berruezo, Gaspar ; Martínez Gracia, Carmen
item.page.secondaryauthor
item.page.director
Publisher
American Chemical Society
publication.page.editor
publication.page.department
DOI
https://doi.org/10.1021/jf3034013
item.page.type
info:eu-repo/semantics/article
Description
Abstract
Phytase activity was recently described in probiotic bifidobacterial strains, opening the possibilities for their use in foods, due to the generally regarded as safe/qualified presumption of safety status of these bacteria. Two raw materials for infant cereals (multicereal and gluten-free) were examined by measuring the myo-inositol phosphates content and the in vitro Ca, Fe, and Zn availability after a dephytinization process with purified phytases from Bifidobacterium longum spp. infantis and Bifidobacterium pseudocatenulatum. Treatment with both enzymes reduced the contents of phytate as compared to control samples (untreated or treated with fungal phytase) and led to increased levels of myo-inositol triphosphate. Dephytinization followed by an in vitro model of intestinal digestion increased the solubility of Zn. However, phytase treatment did not increase significantly the mineral dialyzability as compared to untreated samples. This is the first example of the application of purified bifidobacterial phytases in food processing and shows the potential of these enzymes to be used in products for human consumption.
publication.page.subject
Citation
J. Agric. Food Chem. 2012, 60, 11787−11792
item.page.embargo
Collections
Ir a Estadísticas
Sin licencia Creative Commons.