title: Effects of polyurethane matrices on fungal tannase and gallic acid production under solid state culture.
abstract: The influence of the physical structure of polyurethane matrix as a support in a solid state culture in tannase production and gallic acid accumulation by Aspergillus niger Aa-20 was evaluated. Three different polyurethane matrices were used as the support: continuous, semi-discontinuous and discontinuous. The highest tannase production at 2479.59 U/L during the first 12 h of culture was obtained using the discontinuous matrix. The gallic acid was accumulated at 7.64 g/L at the discontinuous matrix. The results show that the discontinuous matrix of polyurethane is better for tannase production and gallic acid accumulation in a solid state culture bioprocess than the continuous and semi-discontinuous matrices.
authors.affiliation: Department of Food Research, Autonomous University of Coahuila, Saltillo, Coahuila 25000, Mexico.
authors.forename: Lucia
authors.initials: L
authors.lastname: Trevino
authors.forename: Juan C
authors.initials: JC
authors.lastname: Contreras-Esquivel
authors.forename: Raul
authors.initials: R
authors.lastname: Rodríguez-Herrera
authors.forename: Cristóbal Noé
authors.initials: CN
authors.lastname: Aguilar
mesh_terms: D001234:Aspergillus niger / Q000378:metabolism*; D019149:Bioreactors / Q000382:microbiology*; D002265:Carboxylic Ester Hydrolases / Q000378:metabolism*; D018929:Cell Culture Techniques / Q000379:methods*; D005707:Gallic Acid / Q000378:metabolism*; D011140:Polyurethanes / Q000737:chemistry*
chemical_list: D011140:Polyurethanes; D005707:Gallic Acid; D002265:Carboxylic Ester Hydrolases; C022711:tannase