title: Isolation and evaluation of tannin-degrading fungal strains from the Mexican desert.
abstract: Eleven fungal strains (4 Penicillium commune, 2 Aspergillus niger, 2 Aspergillus rugulosa, Aspergillus terricola, Aspergillus ornatus and Aspergillus fumigatus) were isolated, characterized morphologically and by their capacity to degrade tannins. Aspergillus niger Aa-20 was used as control strain. Several concentrations of hydrolysable tannin (tannic acid) were used as sole carbon source. All strains were able to degrade hydrolysable tannins. Aspergillus niger GH1 and PSH showed the highest tannin-degrading capacity (67 and 70%, respectively). Also, the fungal capacity to degrade condensed tannin (catechin) was tested. Aspergillus niger PSH and Penicillium commune EH2 degraded 79.33% and 76.35% of catechin. The results demonstrated the capacity of fungi to use hydrolysable and condensed tannins as carbon source.
authors.affiliation: Food Research Department, School of Chemistry, Universidad Autońoma de Coahuila Saltillo, Coah, México.
authors.forename: Mario
authors.initials: M
authors.lastname: Cruz-Hernańdez
authors.forename: Juan Carlos
authors.initials: JC
authors.lastname: Contreras-Esquivel
authors.forename: Faustino
authors.initials: F
authors.lastname: Lara
authors.forename: Raúl
authors.initials: R
authors.lastname: Rodríguez
authors.forename: Cristóbal N
authors.initials: CN
authors.lastname: Aguilar
mesh_terms: D001673:Biodegradation, Environmental; D018533:Biomass; D002392:Catechin / Q000493:pharmacokinetics; D003889:Desert Climate; D005658:Fungi / Q000254:growth & development / Q000302:isolation & purification* / Q000378:metabolism; D008800:Mexico; D010944:Plants / Q000382:microbiology*; D012988:Soil Microbiology; D013634:Tannins / Q000493:pharmacokinetics*
chemical_list: D013634:Tannins; D002392:Catechin