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Original Articles

A Rapid and Low-Cost Method for Quantification of Reduced Iso-α-Acids in Brewing

Un Método Rápido y de Bajo Costo para Cuantificar los Iso-α-Ácidos Reducidos en la Elaboración de Cerveza

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Pages 39-46 | Received 24 Jan 2005, Accepted 08 May 2005, Published online: 01 Feb 2018

Literatured Cited

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  • American Society of Brewing Chemists. A User's Guide to the New International Calibration Standards for HPLC Analysis of Isomeried and Reduced Isomerized α-Acids. Rev 7. The Society, St. Paul, MN, 2001.
  • Association of Official Analytical Chemists. Peer-Verified Methods Program. Manual of Policies and Procedures. Gaithersburg, MD, 1998.
  • Comisión Venezolana de Normas Industriales. Norma Venezolana COVENIN 2972–2. Exactitud (veracidad y precisión) de métodos de precisión y resultados. Parte 2: Método básico para la determinación de repetibilidad y reproducibilidad de un método estándar de medición, 1997.
  • European Brewery Convention. Hops and Hop Products. Manual of Good Practice. Zoeterwoude, Netherlands, 1997.
  • Gutierrez, H., and De la Vara, R. Calidad de mediciones (repetibilidad y reproducibilidad). In: Control Estadístico de Calidad y Seis Sigma. 6th Ed. Mc.Graw Hill Interamericana. Pp. 328–373, 1996.
  • International Organization for Standardization. ISO 5725–2. Accuracy (trueness and precision) of measurement methods and results. Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement, 1994.
  • U.S. Department of Health and Human Services Food and Drug Administration. ICH Guidance for Industry. Q2B Validation of Analytical Procedures: Methodology. Pp. 8–9, 1996.
  • Verzele, M., Dewaele, C., and Van Kerrebroeck, M. Analysis of beer iso-α-acids by high-performance liquid chromatography without sample pre-treatment. J. Chromatogr. 244:321–326, 1982.

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