title: Bio-prospecting of distillery yeasts as bio-control and bio-remediation agents.
abstract: This work constitutes a preliminary study in which the capacity of non-Saccharomyces yeasts isolated from ancient distilleries as bio-control agents against moulds and in the treatment of waste waters contaminated by heavy metals-i.e. bio-remediation-is shown. In the first control assays, antagonist effect between non-Saccharomyces yeasts, their extracts and supernatants against some moulds, analysing the plausible (not exhaustive) involved factors were qualitatively verified. In addition, two enzymatic degrading properties of cell wall plant polymers, quitinolitic and pectinolitic, were screened. Finally, their use as agents of bio-remediation of three heavy metals (cadmium, chromium and lead) was analysed semi-quantitatively. The results showed that all isolates belonging to Pichia species effectively inhibited all moulds assayed. Moreover, P. kudriavzevii is a good candidate for both bio-control and bio-remediation because it inhibited moulds and accumulated the major proportion of the three tested metals.
authors.affiliation: Tecnología de los Alimentos, IRICA, Universidad de Castilla La Mancha, Avda Camilo José Cela, 10, 13071, Ciudad Real, Spain, juan.ubeda@uclm.es.
authors.forename: Juan F
authors.initials: JF
authors.lastname: Ubeda
authors.forename: María
authors.initials: M
authors.lastname: Maldonado
authors.forename: Ana I
authors.initials: AI
authors.lastname: Briones
authors.forename: J Fernández
authors.initials: JF
authors.lastname: Francisco
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: González
mesh_terms: D004785:Environmental Pollutants / Q000378:metabolism; D052918:Environmental Restoration and Remediation / Q000379:methods*; D005658:Fungi / Q000254:growth & development; D019216:Metals, Heavy / Q000378:metabolism; D056265:Microbial Interactions; D010572:Pest Control, Biological / Q000379:methods*; D015003:Yeasts / Q000254:growth & development / Q000378:metabolism / Q000502:physiology*
chemical_list: D004785:Environmental Pollutants; D019216:Metals, Heavy