A rapid and low-cost method for quantification of reduced iso-α-acids in brewing

Journal of the American Society of Brewing Chemists

Volumn 64, Issue 1, 2006, Pages 39-46

  Bolívar, Alexis ^a   Gasparri, Mónica ^a   Zufall, Carsten ^a  

^a Cervecería Polar C A ^*  (Venezuela)

Author keywords

Beer bitterness; Dihydro iso acids; Hexahydro iso acids; Light stable beer; Tetrahydro iso acids; Validation method

Indexed keywords

EID: 32644438999     PISSN: 03610470     EISSN: None     Source Type: Journal    
DOI: 10.1094/ASBCJ-64-0039     Document Type: Article

References (9)

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2. 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.
3. Association of Official Analytical Chemists. Peer-Verified Methods Program. Manual of Policies and Procedures. Gaithersburg, MD, 1998.
4. 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.
5. European Brewery Convention. Hops and Hop Products. Manual of Good Practice. Zoeterwoude, Netherlands, 1997.
6. 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.
7. 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.
8. 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.
9. 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.