title: Spectrometric studies on stability of tenuazonic acid (TeA) solution in organic solvents.
abstract: The stability of tenuazonic acid solution at different temperatures and storage times was studied using methanol, methanol-water (8:2 v/v), benzene and benzene-acetonitrile (98:2 v/v) as solvents. Solutions were analysed by a spectrometric method TeA U.V.-spectrum was recorded. Results indicated that the optimum temperature for long-time storage period of tenuazonic acid solution in any solvent assayed is -20°C. Benzene and benzene-acetonitrile (98:2 v/v) could be advised to make tenuazonic acid solution which will be stored less than 2 months at 4°C. Methanol and methanolwater (8:2 v/v) are not recommended because a low stability of TeA solution in this solvents.
authors.affiliation: Departamento de Microbiología e Inmunología. Facultad de Ciencias Exactas, Físico-Químicas y Naturales, Universidad Nacional de Río Cuarto, Ruta 8 km 601 (5800) Río Cuarto, CÓrdoba, Argentinia.
authors.forename: M
authors.initials: M
authors.lastname: Combina
authors.forename: A
authors.initials: A
authors.lastname: Dalcero
authors.forename: A
authors.initials: A
authors.lastname: Torres