Alternative non-chromatographic method for alcohols determination in Clostridium acetobutylicum fermentations.

Autor: Noriega-Medrano LJ; Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional # 2508, Col. San Pedro Zacatenco, CP 07360 , México D. F., Mexico., Vega-Estrada J; Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional # 2508, Col. San Pedro Zacatenco, CP 07360 , México D. F., Mexico., Ortega-López J; Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional # 2508, Col. San Pedro Zacatenco, CP 07360 , México D. F., Mexico., Ruiz-Medrano R; Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional # 2508, Col. San Pedro Zacatenco, CP 07360 , México D. F., Mexico., Cristiani-Urbina E; Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Unidad Profesional Lázaro Cárdenas, Prolongación de Carpio y Plan de Ayala s/n, Col. Santo Tomas, , C.P. 11340, Delegación Miguel Hidalgo, México, D.F., Mexico., Montes-Horcasitas Mdel C; Departamento de Biotecnología y Bioingeniería, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV), Av. Instituto Politécnico Nacional # 2508, Col. San Pedro Zacatenco, CP 07360 , México D. F., Mexico. Electronic address: cmontes@cinvestav.mx.
Jazyk: angličtina
Zdroj: Journal of microbiological methods [J Microbiol Methods] 2016 Jul; Vol. 126, pp. 48-53. Date of Electronic Publication: 2016 May 04.
DOI: 10.1016/j.mimet.2016.05.001
Abstrakt: An economic, simple, quantitative, and non-chromatographic method for the determination of alcohols using microdiffusion principle has been adapted and validated for acetone-butanol-ethanol (ABE) fermentation samples. This method, based on alcohols oxidation using potassium dichromate in acid medium, and detection by spectrophotometry, was evaluated varying, both, temperature (35°C, 45°C, and 55°C) and reaction time (0 to 125min). With a sample analysis time of 90min at 45°C, a limit of detection (LOD), and a limit of quantification (LOQ) of 0.10, and 0.40g/L, respectively. The proposed method has been successfully applied to determine butanol and ethanol concentrations in ABE fermentation samples with the advantage that multiple samples can be analyzed simultaneously. The measurements obtained with the proposed method were in good agreement with those obtained with the Gas Chromatography Method (GCM). This proposed method is useful for routine analysis of alcohols and screening samples in laboratories and industries.
(Copyright © 2016 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE